The discovery of the T8.5 dwarf UGPS J0521+3640
Identifieur interne : 001251 ( Istex/Corpus ); précédent : 001250; suivant : 001252The discovery of the T8.5 dwarf UGPS J0521+3640
Auteurs : Ben Burningham ; P. W. Lucas ; S. K. Leggett ; R. Smart ; D. Baker ; D. J. Pinfield ; C. G. Tinney ; D. Homeier ; F. Allard ; Z. H. Zhang ; J. Gomes ; A. C. Day-Jones ; H. R. A. Jones ; G. Kovács ; N. Lodieu ; F. Marocco ; D. N. Murray ; B. Sip CzSource :
- Monthly Notices of the Royal Astronomical Society: Letters [ 1745-3925 ] ; 2011-06-11.
English descriptors
- KwdEn :
- Burningham, Cool companions, Data release, Dwarf ugps, Galactic plane, Gemini observatory, Ideal candidate, Istituto nazionale, Lucas, Mnras, Model grid, Monthly notices, Photometry, Project number, Proper motion, Proper motions, Settl model grid, Solar metallicity, Spectral type, Spectral type plots, Spectral typing index ratios, Spie conf, Total integration time, Ugps, Ugps ugps, Ukidss, Visual inspection.
- Teeft :
- Burningham, Cool companions, Data release, Dwarf ugps, Galactic plane, Gemini observatory, Ideal candidate, Istituto nazionale, Lucas, Mnras, Model grid, Monthly notices, Photometry, Project number, Proper motion, Proper motions, Settl model grid, Solar metallicity, Spectral type, Spectral type plots, Spectral typing index ratios, Spie conf, Total integration time, Ugps, Ugps ugps, Ukidss, Visual inspection.
Abstract
We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐Spitzer observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for Teff= 600 and 650 K and log g= 4.5 and 5.0. These parameters suggest a mass between 14 and 32MJ for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.
Url:
DOI: 10.1111/j.1745-3933.2011.01062.x
Links to Exploration step
ISTEX:626E1834DFAB73F5E26BD0EB949F46A3F4F91909Le document en format XML
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W." last="Lucas">P. W. Lucas</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Leggett, S K" sort="Leggett, S K" uniqKey="Leggett S" first="S. K." last="Leggett">S. K. Leggett</name><affiliation><mods:affiliation>Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA</mods:affiliation></affiliation></author><author><name sortKey="Smart, R" sort="Smart, R" uniqKey="Smart R" first="R." last="Smart">R. Smart</name><affiliation><mods:affiliation>Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Torino, Strada Osservatrio 20, 10025 Pino Torinese, Italy</mods:affiliation></affiliation></author><author><name sortKey="Baker, D" sort="Baker, D" uniqKey="Baker D" first="D." last="Baker">D. Baker</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Pinfield, D J" sort="Pinfield, D J" uniqKey="Pinfield D" first="D. J." last="Pinfield">D. J. Pinfield</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Tinney, C G" sort="Tinney, C G" uniqKey="Tinney C" first="C. G." last="Tinney">C. G. Tinney</name><affiliation><mods:affiliation>School of Physics, The University of New South Wales, Sydney 2052, Australia</mods:affiliation></affiliation></author><author><name sortKey="Homeier, D" sort="Homeier, D" uniqKey="Homeier D" first="D." last="Homeier">D. Homeier</name><affiliation><mods:affiliation>Institut fur Astrophysik, Georg‐August‐Universitat, Friedrich‐Hund‐Platz 1, 37077 Gottingen, Germany</mods:affiliation></affiliation></author><author><name sortKey="Allard, F" sort="Allard, F" uniqKey="Allard F" first="F." last="Allard">F. Allard</name><affiliation><mods:affiliation>CRAL (UMR 5574 CNRS), Ecole Normale Superieure, 69364 Lyon Cedex 07, France</mods:affiliation></affiliation></author><author><name sortKey="Zhang, Z H" sort="Zhang, Z H" uniqKey="Zhang Z" first="Z. H." last="Zhang">Z. H. Zhang</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Gomes, J" sort="Gomes, J" uniqKey="Gomes J" first="J." last="Gomes">J. Gomes</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Day Ones, A C" sort="Day Ones, A C" uniqKey="Day Ones A" first="A. C." last="Day-Jones">A. C. Day-Jones</name><affiliation><mods:affiliation>Camino el Observatorio # 1515, Universidad de Chile, Santiago, Casilla 36‐D, Chile</mods:affiliation></affiliation></author><author><name sortKey="Jones, H R A" sort="Jones, H R A" uniqKey="Jones H" first="H. R. A." last="Jones">H. R. A. Jones</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Kovacs, G" sort="Kovacs, G" uniqKey="Kovacs G" first="G." last="Kovács">G. Kovács</name><affiliation><mods:affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</mods:affiliation></affiliation></author><author><name sortKey="Lodieu, N" sort="Lodieu, N" uniqKey="Lodieu N" first="N." last="Lodieu">N. Lodieu</name><affiliation><mods:affiliation>Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain</mods:affiliation></affiliation><affiliation><mods:affiliation>Departamento de Astrofísica, Universidad de La Laguna (ULL), E‐38205 La Laguna, Tenerife, Spain</mods:affiliation></affiliation></author><author><name sortKey="Marocco, F" sort="Marocco, F" uniqKey="Marocco F" first="F." last="Marocco">F. Marocco</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Murray, D N" sort="Murray, D N" uniqKey="Murray D" first="D. N." last="Murray">D. N. Murray</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author><author><name sortKey="Sip Cz, B" sort="Sip Cz, B" uniqKey="Sip Cz B" first="B." last="Sip Cz">B. Sip Cz</name><affiliation><mods:affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society: Letters</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LETTERS</title><idno type="ISSN">1745-3925</idno><idno type="eISSN">1745-3933</idno><imprint><biblScope unit="vol">414</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="L90">L90</biblScope><biblScope unit="page" to="L94">L94</biblScope><biblScope unit="page-count">5</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-06-11">2011-06-11</date></imprint><idno type="ISSN">1745-3925</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1745-3925</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Burningham</term><term>Cool companions</term><term>Data release</term><term>Dwarf ugps</term><term>Galactic plane</term><term>Gemini observatory</term><term>Ideal candidate</term><term>Istituto nazionale</term><term>Lucas</term><term>Mnras</term><term>Model grid</term><term>Monthly notices</term><term>Photometry</term><term>Project number</term><term>Proper motion</term><term>Proper motions</term><term>Settl model grid</term><term>Solar metallicity</term><term>Spectral type</term><term>Spectral type plots</term><term>Spectral typing index ratios</term><term>Spie conf</term><term>Total integration time</term><term>Ugps</term><term>Ugps ugps</term><term>Ukidss</term><term>Visual inspection</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Burningham</term><term>Cool companions</term><term>Data release</term><term>Dwarf ugps</term><term>Galactic plane</term><term>Gemini observatory</term><term>Ideal candidate</term><term>Istituto nazionale</term><term>Lucas</term><term>Mnras</term><term>Model grid</term><term>Monthly notices</term><term>Photometry</term><term>Project number</term><term>Proper motion</term><term>Proper motions</term><term>Settl model grid</term><term>Solar metallicity</term><term>Spectral type</term><term>Spectral type plots</term><term>Spectral typing index ratios</term><term>Spie conf</term><term>Total integration time</term><term>Ugps</term><term>Ugps ugps</term><term>Ukidss</term><term>Visual inspection</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐Spitzer observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for Teff= 600 and 650 K and log g= 4.5 and 5.0. These parameters suggest a mass between 14 and 32MJ for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>ugps</json:string><json:string>mnras</json:string><json:string>burningham</json:string><json:string>ukidss</json:string><json:string>photometry</json:string><json:string>spectral type</json:string><json:string>data release</json:string><json:string>monthly notices</json:string><json:string>galactic plane</json:string><json:string>spectral typing index ratios</json:string><json:string>cool companions</json:string><json:string>proper motions</json:string><json:string>ugps ugps</json:string><json:string>dwarf ugps</json:string><json:string>visual inspection</json:string><json:string>proper motion</json:string><json:string>ideal candidate</json:string><json:string>istituto nazionale</json:string><json:string>spie conf</json:string><json:string>project number</json:string><json:string>spectral type plots</json:string><json:string>settl model grid</json:string><json:string>solar metallicity</json:string><json:string>model grid</json:string><json:string>gemini observatory</json:string><json:string>total integration time</json:string><json:string>lucas</json:string></teeft></keywords><author><json:item><name>Ben Burningham</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string><json:string>E-mail: B.Burningham@herts.ac.uk</json:string></affiliations></json:item><json:item><name>P. W. Lucas</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>S. K. Leggett</name><affiliations><json:string>Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA</json:string></affiliations></json:item><json:item><name>R. Smart</name><affiliations><json:string>Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Torino, Strada Osservatrio 20, 10025 Pino Torinese, Italy</json:string></affiliations></json:item><json:item><name>D. Baker</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>D. J. Pinfield</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>C. G. Tinney</name><affiliations><json:string>School of Physics, The University of New South Wales, Sydney 2052, Australia</json:string></affiliations></json:item><json:item><name>D. Homeier</name><affiliations><json:string>Institut fur Astrophysik, Georg‐August‐Universitat, Friedrich‐Hund‐Platz 1, 37077 Gottingen, Germany</json:string></affiliations></json:item><json:item><name>F. Allard</name><affiliations><json:string>CRAL (UMR 5574 CNRS), Ecole Normale Superieure, 69364 Lyon Cedex 07, France</json:string></affiliations></json:item><json:item><name>Z. H. Zhang</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>J. Gomes</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>A. C. Day‐Jones</name><affiliations><json:string>Camino el Observatorio # 1515, Universidad de Chile, Santiago, Casilla 36‐D, Chile</json:string></affiliations></json:item><json:item><name>H. R. A. Jones</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>G. Kovács</name><affiliations><json:string>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</json:string></affiliations></json:item><json:item><name>N. Lodieu</name><affiliations><json:string>Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain</json:string><json:string>Departamento de Astrofísica, Universidad de La Laguna (ULL), E‐38205 La Laguna, Tenerife, Spain</json:string></affiliations></json:item><json:item><name>F. Marocco</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>D. N. Murray</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item><json:item><name>B. Sipőcz</name><affiliations><json:string>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>surveys</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>brown dwarfs</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>stars: low‐mass</value></json:item></subject><articleId><json:string>MNL21062</json:string></articleId><arkIstex>ark:/67375/WNG-40RTNP90-4</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐Spitzer observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for Teff= 600 and 650 K and log g= 4.5 and 5.0. These parameters suggest a mass between 14 and 32MJ for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.</abstract><qualityIndicators><score>7.728</score><pdfWordCount>3580</pdfWordCount><pdfCharCount>19233</pdfCharCount><pdfVersion>1.4</pdfVersion><pdfPageCount>5</pdfPageCount><pdfPageSize>595.274 x 782.286 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>179</abstractWordCount><abstractCharCount>1048</abstractCharCount><keywordCount>3</keywordCount></qualityIndicators><title>The discovery of the T8.5 dwarf UGPS J0521+3640</title><genre><json:string>article</json:string></genre><host><title>Monthly Notices of the Royal Astronomical Society: Letters</title><language><json:string>unknown</json:string></language><doi><json:string>10.1111/(ISSN)1745-3933</json:string></doi><issn><json:string>1745-3925</json:string></issn><eissn><json:string>1745-3933</json:string></eissn><publisherId><json:string>MNL2</json:string></publisherId><volume>414</volume><issue>1</issue><pages><first>L90</first><last>L94</last><total>5</total></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>2011</json:string><json:string>2010</json:string></date><geogName></geogName><orgName><json:string>National Science Foundation</json:string><json:string>Ministry of Science and Innovation</json:string><json:string>Italian Telescopio Nazionale Galileo</json:string><json:string>University of New South Wales</json:string><json:string>Astronomy, Inc.</json:string><json:string>University of Hertfordshire</json:string><json:string>National Telescope Galileo</json:string><json:string>National Research Council</json:string><json:string>Australian Research Council</json:string><json:string>Chile, Santiago, Casilla</json:string><json:string>Ministerio de Ciencia</json:string><json:string>TNG</json:string><json:string>Institute of Astronomy, Madingley Road, Cambridge CB</json:string><json:string>Istituto Nazionale</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>B.Burningham</json:string><json:string>Janet Drew</json:string><json:string>Sky Survey</json:string><json:string>F. 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Zhang</json:string><json:string>Robert Benjamin</json:string><json:string>Adam Burgasser</json:string></persName><placeName><json:string>Germany</json:string><json:string>United States</json:string><json:string>Australia</json:string><json:string>Chile</json:string><json:string>Brazil</json:string><json:string>Canada</json:string><json:string>Argentina</json:string><json:string>Strasbourg</json:string><json:string>United Kingdom</json:string><json:string>HI</json:string><json:string>France</json:string><json:string>Italy</json:string><json:string>Spain</json:string><json:string>Lyon</json:string></placeName><ref_url><json:string>http://www.browndwarfs.org/spexprism</json:string></ref_url><ref_bibl><json:string>Delorme et al. 2010</json:string><json:string>Vrba et al. (2004)</json:string><json:string>Folkes et al. 2007</json:string><json:string>Marocco et al. (2010)</json:string><json:string>Cushing et al. (2008)</json:string><json:string>Casali et al. 2007</json:string><json:string>Dupuy, Liu & Ireland 2009a,b</json:string><json:string>Warren et al. 2007</json:string><json:string>Elias et al. 2006</json:string><json:string>Hambly et al. 2001</json:string><json:string>Allard, Homeier & Freytag 2010</json:string><json:string>Delorme et al. 2008</json:string><json:string>Roeser, Demleitner & Schilbach 2010</json:string><json:string>Burningham et al. 2009, 2011</json:string><json:string>Liu, Dupuy & Ireland 2008</json:string><json:string>Lucas et al. 2010</json:string><json:string>Delorme et al. (2008)</json:string><json:string>Lucas et al. (2010)</json:string><json:string>Marley et al. 2002</json:string><json:string>Warren et al. (2007)</json:string><json:string>Burgasser et al. (2006)</json:string><json:string>Mainzer et al. 2011</json:string><json:string>Irwin et al. 2004</json:string><json:string>Cooke & Rodgers 2005</json:string><json:string>Saumon et al. 2006, 2007</json:string><json:string>Burningham et al. 2009</json:string><json:string>Goldman et al. 2010</json:string><json:string>Lawrence et al. 2007</json:string><json:string>Lucas et al. 2008</json:string><json:string>Burningham et al. (2008)</json:string><json:string>Burningham et al. (2010)</json:string><json:string>Drew et al. 2005</json:string><json:string>Burningham et al. 2008</json:string><json:string>Baraffe et al. 2003</json:string><json:string>Artigau et al. 2010</json:string><json:string>Hambly et al. 2008</json:string><json:string>Burningham et al. (2011)</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/WNG-40RTNP90-4</json:string></ark><categories><inist><json:string>1 - sciences appliquees, technologies et medecines</json:string><json:string>2 - sciences biologiques et medicales</json:string><json:string>3 - sciences biologiques fondamentales et appliquees. psychologie</json:string><json:string>4 - biophysique des tissus, organes et organismes</json:string></inist></categories><publicationDate>2011</publicationDate><copyrightDate>2011</copyrightDate><doi><json:string>10.1111/j.1745-3933.2011.01062.x</json:string></doi><id>626E1834DFAB73F5E26BD0EB949F46A3F4F91909</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/626E1834DFAB73F5E26BD0EB949F46A3F4F91909/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/626E1834DFAB73F5E26BD0EB949F46A3F4F91909/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/626E1834DFAB73F5E26BD0EB949F46A3F4F91909/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">The discovery of the T8.5 dwarf UGPS J0521+3640</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><licence>© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS</licence></availability><date type="published" when="2011-06-11"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">The discovery of the T8.5 dwarf UGPS J0521+3640</title><title level="a" type="short">T dwarfs in the GPS</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Ben</forename><surname>Burningham</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><affiliation>E‐mail: B.Burningham@herts.ac.uk</affiliation></author><author xml:id="author-0001"><persName><forename type="first">P. W.</forename><surname>Lucas</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0002"><persName><forename type="first">S. K.</forename><surname>Leggett</surname></persName><affiliation>Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA<address><country key="US"></country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">R.</forename><surname>Smart</surname></persName><affiliation>Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Torino, Strada Osservatrio 20, 10025 Pino Torinese, Italy<address><country key="IT"></country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">D.</forename><surname>Baker</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0005"><persName><forename type="first">D. 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H.</forename><surname>Zhang</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0010"><persName><forename type="first">J.</forename><surname>Gomes</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0011"><persName><forename type="first">A. C.</forename><surname>Day‐Jones</surname></persName><affiliation>Camino el Observatorio # 1515, Universidad de Chile, Santiago, Casilla 36‐D, Chile<address><country key="CL"></country></address></affiliation></author><author xml:id="author-0012"><persName><forename type="first">H. R. A.</forename><surname>Jones</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0013"><persName><forename type="first">G.</forename><surname>Kovács</surname></persName><affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</affiliation></author><author xml:id="author-0014"><persName><forename type="first">N.</forename><surname>Lodieu</surname></persName><affiliation>Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain<address><country key="ES"></country></address></affiliation><affiliation>Departamento de Astrofísica, Universidad de La Laguna (ULL), E‐38205 La Laguna, Tenerife, Spain<address><country key="ES"></country></address></affiliation></author><author xml:id="author-0015"><persName><forename type="first">F.</forename><surname>Marocco</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0016"><persName><forename type="first">D. N.</forename><surname>Murray</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><author xml:id="author-0017"><persName><forename type="first">B.</forename><surname>Sipőcz</surname></persName><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation></author><idno type="istex">626E1834DFAB73F5E26BD0EB949F46A3F4F91909</idno><idno type="ark">ark:/67375/WNG-40RTNP90-4</idno><idno type="DOI">10.1111/j.1745-3933.2011.01062.x</idno><idno type="unit">MNL21062</idno><idno type="toTypesetVersion">file:MNL2.MNL21062.pdf</idno></analytic><monogr><title level="j" type="main">Monthly Notices of the Royal Astronomical Society: Letters</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LETTERS</title><idno type="pISSN">1745-3925</idno><idno type="eISSN">1745-3933</idno><idno type="book-DOI">10.1111/(ISSN)1745-3933</idno><idno type="book-part-DOI">10.1111/mnl.2011.414.issue-1</idno><idno type="product">MNL2</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">414</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="L90">L90</biblScope><biblScope unit="page" to="L94">L94</biblScope><biblScope unit="page-count">5</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-06-11"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><head>ABSTRACT</head><p>We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐<hi rend="italic">Spitzer</hi> observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for <emph><span><hi rend="italic">T</hi><hi rend="subscript">eff</hi>= 600</span></emph> and 650 K and <emph><span>log <hi rend="italic">g</hi>= 4.5</span></emph> and 5.0. These parameters suggest a mass between 14 and <emph><span>32<hi rend="italic">M</hi><hi rend="subscript">J</hi></span></emph> for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.</p></abstract><textClass><keywords xml:lang="en"><term xml:id="k1">surveys</term><term xml:id="k2">brown dwarfs</term><term xml:id="k3">stars: low‐mass</term></keywords><keywords rend="tocHeading1"><term>Letters</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/626E1834DFAB73F5E26BD0EB949F46A3F4F91909/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1745-3933</doi><issn type="print">1745-3925</issn><issn type="electronic">1745-3933</issn><idGroup><id type="product" value="MNL2"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LETTERS">Monthly Notices of the Royal Astronomical Society: Letters</title></titleGroup></publicationMeta><publicationMeta level="part" position="06101"><doi origin="wiley">10.1111/mnl.2011.414.issue-1</doi><numberingGroup><numbering type="journalVolume" number="414">414</numbering><numbering type="journalIssue" number="1">1</numbering></numberingGroup><coverDate startDate="2011-06-11">June 2011</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="19" status="forIssue"><doi origin="wiley">10.1111/j.1745-3933.2011.01062.x</doi><idGroup><id type="unit" value="MNL21062"></id></idGroup><countGroup><count type="pageTotal" number="5"></count></countGroup><titleGroup><title type="tocHeading1">Letters</title></titleGroup><copyright>© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS</copyright><eventGroup><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.5 mode:FullText" date="2011-06-01"></event><event type="publishedOnlineEarlyUnpaginated" date="2011-05-09"></event><event type="firstOnline" date="2011-05-09"></event><event type="publishedOnlineFinalForm" date="2011-06-01"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-02-02"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-31"></event></eventGroup><numberingGroup><numbering type="pageFirst">L90</numbering><numbering type="pageLast">L94</numbering></numberingGroup><correspondenceTo>
E‐mail: <email>B.Burningham@herts.ac.uk</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:MNL2.MNL21062.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Accepted 2011 April 7. Received 2011 April 7; in original form 2011 March 11</unparsedEditorialHistory><countGroup><count type="figureTotal" number="2"></count><count type="tableTotal" number="3"></count><count type="formulaTotal" number="101"></count><count type="referenceTotal" number="35"></count><count type="linksCrossRef" number="82"></count></countGroup><titleGroup><title type="main">The discovery of the T8.5 dwarf UGPS J0521+3640</title><title type="shortAuthors"><i>B. Burningham et al.</i></title><title type="short"><i>T dwarfs in the GPS</i></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" corresponding="yes"><personName><givenNames>Ben</givenNames><familyName>Burningham</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>P. W.</givenNames><familyName>Lucas</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a2"><personName><givenNames>S. 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A'ohoku Place, Hilo, HI 96720, USA</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="IT"><unparsedAffiliation>Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Torino, Strada Osservatrio 20, 10025 Pino Torinese, Italy</unparsedAffiliation></affiliation><affiliation xml:id="a4" countryCode="AU"><unparsedAffiliation>School of Physics, The University of New South Wales, Sydney 2052, Australia</unparsedAffiliation></affiliation><affiliation xml:id="a5" countryCode="DE"><unparsedAffiliation>Institut fur Astrophysik, Georg‐August‐Universitat, Friedrich‐Hund‐Platz 1, 37077 Gottingen, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a6" countryCode="FR"><unparsedAffiliation>CRAL (UMR 5574 CNRS), Ecole Normale Superieure, 69364 Lyon Cedex 07, France</unparsedAffiliation></affiliation><affiliation xml:id="a7" countryCode="CL"><unparsedAffiliation>Camino el Observatorio # 1515, Universidad de Chile, Santiago, Casilla 36‐D, Chile</unparsedAffiliation></affiliation><affiliation xml:id="a8"><unparsedAffiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</unparsedAffiliation></affiliation><affiliation xml:id="a9" countryCode="ES"><unparsedAffiliation>Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain</unparsedAffiliation></affiliation><affiliation xml:id="a10" countryCode="ES"><unparsedAffiliation>Departamento de Astrofísica, Universidad de La Laguna (ULL), E‐38205 La Laguna, Tenerife, Spain</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">surveys</keyword><keyword xml:id="k2">brown dwarfs</keyword><keyword xml:id="k3">stars: low‐mass</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">ABSTRACT</title><p>We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐<i>Spitzer</i> observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for <span type="mathematics"><i>T</i><sub>eff</sub>= 600</span> and 650 K and <span type="mathematics">log <i>g</i>= 4.5</span> and 5.0. These parameters suggest a mass between 14 and <span type="mathematics">32<i>M</i><sub>J</sub></span> for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The discovery of the T8.5 dwarf UGPS J0521+3640</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>T dwarfs in the GPS</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>The discovery of the T8.5 dwarf UGPS J0521+3640</title></titleInfo><name type="personal"><namePart type="given">Ben</namePart><namePart type="family">Burningham</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><affiliation>E-mail: B.Burningham@herts.ac.uk</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P. W.</namePart><namePart type="family">Lucas</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. K.</namePart><namePart type="family">Leggett</namePart><affiliation>Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.</namePart><namePart type="family">Smart</namePart><affiliation>Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Torino, Strada Osservatrio 20, 10025 Pino Torinese, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D.</namePart><namePart type="family">Baker</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. J.</namePart><namePart type="family">Pinfield</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C. G.</namePart><namePart type="family">Tinney</namePart><affiliation>School of Physics, The University of New South Wales, Sydney 2052, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D.</namePart><namePart type="family">Homeier</namePart><affiliation>Institut fur Astrophysik, Georg‐August‐Universitat, Friedrich‐Hund‐Platz 1, 37077 Gottingen, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.</namePart><namePart type="family">Allard</namePart><affiliation>CRAL (UMR 5574 CNRS), Ecole Normale Superieure, 69364 Lyon Cedex 07, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Z. H.</namePart><namePart type="family">Zhang</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Gomes</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A. C.</namePart><namePart type="family">Day‐Jones</namePart><affiliation>Camino el Observatorio # 1515, Universidad de Chile, Santiago, Casilla 36‐D, Chile</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H. R. A.</namePart><namePart type="family">Jones</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Kovács</namePart><affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">N.</namePart><namePart type="family">Lodieu</namePart><affiliation>Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain</affiliation><affiliation>Departamento de Astrofísica, Universidad de La Laguna (ULL), E‐38205 La Laguna, Tenerife, Spain</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.</namePart><namePart type="family">Marocco</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D. N.</namePart><namePart type="family">Murray</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">B.</namePart><namePart type="family">Sipőcz</namePart><affiliation>Centre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2011-06-11</dateIssued><edition>Accepted 2011 April 7. Received 2011 April 7; in original form 2011 March 11</edition><copyrightDate encoding="w3cdtf">2011</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">2</extent><extent unit="tables">3</extent><extent unit="formulas">101</extent><extent unit="references">35</extent><extent unit="linksCrossRef">82</extent></physicalDescription><abstract lang="en">We have carried out a search for late‐type T dwarfs in the UKIRT Infrared Deep Sky Survey Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been confirmed as T dwarfs. The brightest, UGPS J0521+3640, has been assigned the spectral type T8.5 and appears to lie at a distance of 7–9 pc. The fainter of the two, UGPS J0652+0324, is classified as a T5.5 dwarf and lies at an estimated distance of 28–37 pc. Warm‐Spitzer observations in IRAC channels 1 and 2, taken as part of the GLIMPSE360 Legacy Survey, are available for UGPS J0521+3640 and we used these data with the near‐infrared spectroscopy to estimate its properties. We find best‐fitting solar metallicity BT‐Settl models for Teff= 600 and 650 K and log g= 4.5 and 5.0. These parameters suggest a mass between 14 and 32MJ for an age between 1 and 5 Gyr. The proximity of this very cool T dwarf, and its location in the Galactic plane, makes it an ideal candidate for high‐resolution adaptive optics imaging to search for cool companions.</abstract><subject lang="en"><genre>keywords</genre><topic>surveys</topic><topic>brown dwarfs</topic><topic>stars: low‐mass</topic></subject><relatedItem type="host"><titleInfo><title>Monthly Notices of the Royal Astronomical Society: Letters</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><identifier type="ISSN">1745-3925</identifier><identifier type="eISSN">1745-3933</identifier><identifier type="DOI">10.1111/(ISSN)1745-3933</identifier><identifier type="PublisherID">MNL2</identifier><part><date>2011</date><detail type="volume"><caption>vol.</caption><number>414</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>L90</start><end>L94</end><total>5</total></extent></part></relatedItem><identifier type="istex">626E1834DFAB73F5E26BD0EB949F46A3F4F91909</identifier><identifier type="ark">ark:/67375/WNG-40RTNP90-4</identifier><identifier type="DOI">10.1111/j.1745-3933.2011.01062.x</identifier><identifier type="ArticleID">MNL21062</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/626E1834DFAB73F5E26BD0EB949F46A3F4F91909/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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