A new population of extended, luminous star clusters in the halo of M31
Identifieur interne : 000248 ( Istex/Curation ); précédent : 000247; suivant : 000249A new population of extended, luminous star clusters in the halo of M31
Auteurs : A. P. Huxor [Royaume-Uni] ; N. R. Tanvir ; M. J. Irwin ; R. Ibata [France] ; J. L. Collett ; A. M. N. Ferguson [Royaume-Uni] ; T. Bridges [Canada] ; G. F. Lewis [Australie]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2005-07.
English descriptors
- KwdEn :
- Absolute magnitude, Aperture photometry, Arcsec, Bekki chiba, Bergh, Bergh mackey, Bright stars, Brodie larsen, Cluster, Dsphs, Dwarf, Dwarf galaxy, Dwarf spheroidals, Galaxy, Giant galaxy, Globular clusters, Halo, Hilker infante, Host galaxies, Intermediate forms, Iraf implementation, Irwin, Irwin hatzidimitriou, Irwin lewis, Isaac newton telescope, Large number, Large radii, Larsen, Lenticular galaxies, Lled points, Luminosity, Luminous star clusters, Mnras, Parameter space, Photometry, Progenitor dwarf, Star cluster, Star clusters, Such clusters, Super star clusters, Tidal radii.
- Teeft :
- Absolute magnitude, Aperture photometry, Arcsec, Bekki chiba, Bergh, Bergh mackey, Bright stars, Brodie larsen, Cluster, Dsphs, Dwarf, Dwarf galaxy, Dwarf spheroidals, Galaxy, Giant galaxy, Globular clusters, Halo, Hilker infante, Host galaxies, Intermediate forms, Iraf implementation, Irwin, Irwin hatzidimitriou, Irwin lewis, Isaac newton telescope, Large number, Large radii, Larsen, Lenticular galaxies, Lled points, Luminosity, Luminous star clusters, Mnras, Parameter space, Photometry, Progenitor dwarf, Star cluster, Star clusters, Such clusters, Super star clusters, Tidal radii.
Abstract
We present three new clusters discovered in the halo of M31 which, although having globular‐like colours and luminosities, have unusually large half‐light radii, ∼30 pc. They lie at projected galactocentric distances of ≈15 to ≈35 kpc. These objects begin to fill the gap in parameter space between globular clusters and dwarf spheroidals, and are unlike any clusters found in the Milky Way, or elsewhere to date. Colour–magnitude diagrams, integrated photometric properties and derived King profile fit parameters are given, and we discuss possible origins of these clusters and their relationships to other populations.
Url:
DOI: 10.1111/j.1365-2966.2005.09086.x
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N. R. Tanvir<affiliation><mods:affiliation>Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation><wicri:noCountry code="subField">9AB</wicri:noCountry></affiliation><affiliation><mods:affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</mods:affiliation><wicri:noCountry code="subField">0HA</wicri:noCountry></affiliation><affiliation><mods:affiliation>Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation><wicri:noCountry code="subField">9AB</wicri:noCountry></affiliation>Le document en format XML
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P." last="Huxor">A. P. Huxor</name><affiliation><mods:affiliation>Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: ahuxor@star.herts.ac.uk</mods:affiliation><country wicri:rule="url">Royaume-Uni</country></affiliation></author><author><name sortKey="Tanvir, N R" sort="Tanvir, N R" uniqKey="Tanvir N" first="N. R." last="Tanvir">N. R. Tanvir</name><affiliation><mods:affiliation>Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB</mods:affiliation><wicri:noCountry code="subField">9AB</wicri:noCountry></affiliation></author><author><name sortKey="Irwin, M J" sort="Irwin, M J" uniqKey="Irwin M" first="M. J." last="Irwin">M. J. Irwin</name><affiliation><mods:affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</mods:affiliation><wicri:noCountry code="subField">0HA</wicri:noCountry></affiliation></author><author><name sortKey="Ibata, R" sort="Ibata, R" uniqKey="Ibata R" first="R." last="Ibata">R. Ibata</name><affiliation wicri:level="1"><mods:affiliation>Observatoire de Strasbourg, 11, rue de l'Universite, F‐67000, Strasbourg, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Observatoire de Strasbourg, 11, rue de l'Universite, F‐67000, Strasbourg</wicri:regionArea></affiliation></author><author><name sortKey="Collett, J L" sort="Collett, J L" uniqKey="Collett J" first="J. L." last="Collett">J. L. 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Bridges</name><affiliation wicri:level="1"><mods:affiliation>Department of Physics, Queen's University, Kingston, Ontario, Canada K7M 3N6</mods:affiliation><country>Canada</country><wicri:regionArea>Department of Physics, Queen's University, Kingston, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name><affiliation wicri:level="1"><mods:affiliation>Institute of Astronomy, School of Physics, A29, University of Sydney, NSW 2006, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute of Astronomy, School of Physics, A29, University of Sydney, NSW 2006</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><biblScope unit="vol">360</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="1007">1007</biblScope><biblScope unit="page" to="1012">1012</biblScope><publisher>Blackwell Science Ltd</publisher><pubPlace> 23 Ainslie Place , Edinburgh EH3 6AJ , UK . Telephone (0131) 226 7232 Fax (0131) 226 3803 </pubPlace><date type="published" when="2005-07">2005-07</date></imprint><idno type="ISSN">0035-8711</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absolute magnitude</term><term>Aperture photometry</term><term>Arcsec</term><term>Bekki chiba</term><term>Bergh</term><term>Bergh mackey</term><term>Bright stars</term><term>Brodie larsen</term><term>Cluster</term><term>Dsphs</term><term>Dwarf</term><term>Dwarf galaxy</term><term>Dwarf spheroidals</term><term>Galaxy</term><term>Giant galaxy</term><term>Globular clusters</term><term>Halo</term><term>Hilker infante</term><term>Host galaxies</term><term>Intermediate forms</term><term>Iraf implementation</term><term>Irwin</term><term>Irwin hatzidimitriou</term><term>Irwin lewis</term><term>Isaac newton telescope</term><term>Large number</term><term>Large radii</term><term>Larsen</term><term>Lenticular galaxies</term><term>Lled points</term><term>Luminosity</term><term>Luminous star clusters</term><term>Mnras</term><term>Parameter space</term><term>Photometry</term><term>Progenitor dwarf</term><term>Star cluster</term><term>Star clusters</term><term>Such clusters</term><term>Super star clusters</term><term>Tidal radii</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Absolute magnitude</term><term>Aperture photometry</term><term>Arcsec</term><term>Bekki chiba</term><term>Bergh</term><term>Bergh mackey</term><term>Bright stars</term><term>Brodie larsen</term><term>Cluster</term><term>Dsphs</term><term>Dwarf</term><term>Dwarf galaxy</term><term>Dwarf spheroidals</term><term>Galaxy</term><term>Giant galaxy</term><term>Globular clusters</term><term>Halo</term><term>Hilker infante</term><term>Host galaxies</term><term>Intermediate forms</term><term>Iraf implementation</term><term>Irwin</term><term>Irwin hatzidimitriou</term><term>Irwin lewis</term><term>Isaac newton telescope</term><term>Large number</term><term>Large radii</term><term>Larsen</term><term>Lenticular galaxies</term><term>Lled points</term><term>Luminosity</term><term>Luminous star clusters</term><term>Mnras</term><term>Parameter space</term><term>Photometry</term><term>Progenitor dwarf</term><term>Star cluster</term><term>Star clusters</term><term>Such clusters</term><term>Super star clusters</term><term>Tidal radii</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We present three new clusters discovered in the halo of M31 which, although having globular‐like colours and luminosities, have unusually large half‐light radii, ∼30 pc. They lie at projected galactocentric distances of ≈15 to ≈35 kpc. These objects begin to fill the gap in parameter space between globular clusters and dwarf spheroidals, and are unlike any clusters found in the Milky Way, or elsewhere to date. Colour–magnitude diagrams, integrated photometric properties and derived King profile fit parameters are given, and we discuss possible origins of these clusters and their relationships to other populations.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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