AustralieFrV1, Main, Exploration, bibRecord, 005E40

BREAKS IN THIN AND THICK DISKS OF EDGE-ON GALAXIES IMAGED IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S4G)

Identifieur interne : 005E40 ( Main/Exploration ); précédent : 005E39; suivant : 005E41

BREAKS IN THIN AND THICK DISKS OF EDGE-ON GALAXIES IMAGED IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S4G)

Auteurs : Sébastien Comeron [Finlande, Corée du Sud] ; Bruce G. Elmegreen [États-Unis] ; Heikki Salo [Finlande] ; Eija Laurikainen [Finlande] ; E. Athanassoula [France] ; Albert Bosma [France] ; Johan H. Knapen [Espagne] ; Dimitri A. Gadotti [Chili] ; Kartik Sheth [États-Unis] ; Joannah L. Hinz [États-Unis] ; Michael W. Regan [États-Unis] ; Armando Gil De Paz [Espagne] ; Juan Carlos Munoz-Mateos [États-Unis] ; Karín Menendez-Delmestre [Brésil] ; Mark Seibert [États-Unis] ; Taehyun Kim [États-Unis] ; Trisha Mizusawa [Australie] ; Jarkko Laine [Finlande] ; Luis C. Ho [États-Unis] ; Benne Holwerda [Pays-Bas]

Source :

The Astrophysical journal [ 0004-637X ] ; 2012.

RBID : Pascal:12-0442574

Descripteurs français

Pascal (Inist)
- Galaxies spirales, Structure stellaire, Structure galaxies, Luminosité, Masse stellaire, Supernova, Boucle réaction, Evolution dynamique, Photométrie.

English descriptors

KwdEn :
- Dynamical evolution, Feedback, Galaxy structure, Luminosity, Photometry, Spiral galaxies, Stellar mass, Stellar structure, Supernovae.

Abstract

Breaks in the radial luminosity profiles of galaxies have until now been mostly studied averaged over disks. Here, we study separately breaks in thin and thick disks in 70 edge-on galaxies using imaging from the Spitzer Survey of Stellar Structure in Galaxies. We built luminosity profiles of the thin and thick disks parallel to midplanes and we found that thin disks often truncate (77%). Thick disks truncate less often (31%), but when they do, their break radius is comparable with that in the thin disk. This suggests either two different truncation mechanisms-one of dynamical origin affecting both disks simultaneously and another one only affecting the thin disk-or a single mechanism that creates a truncation in one disk or in both depending on some galaxy property. Thin disks apparently antitruncate in around 40% of galaxies. However, in many cases, these antitruncations are an artifact caused by the superposition of a thin disk and a thick disk, with the latter having a longer scale length. We estimate the real thin disk antitruncation fraction to be less than 15%. We found that the ratio of the thick and thin stellar disk mass is roughly constant (0.2 < M_T/M_t < 0.7) for circular velocities ν_c > 120 km s^-1, but becomes much larger at smaller velocities. We hypothesize that this is due to a combination of a high efficiency of supernova feedback and a slower dynamical evolution in lower-mass galaxies causing stellar thin disks to be younger and less massive than in higher-mass galaxies.

Affiliations:

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Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">BREAKS IN THIN AND THICK DISKS OF EDGE-ON GALAXIES IMAGED IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S<sup>4</sup>
G)</title>
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<author><name sortKey="Elmegreen, Bruce G" sort="Elmegreen, Bruce G" uniqKey="Elmegreen B" first="Bruce G." last="Elmegreen">Bruce G. Elmegreen</name>
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<author><name sortKey="Salo, Heikki" sort="Salo, Heikki" uniqKey="Salo H" first="Heikki" last="Salo">Heikki Salo</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Astronomy Division. Department of Physics, University of Oulu, P.O. Box 3000</s1>
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<s3>FIN</s3>
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<author><name sortKey="Athanassoula, E" sort="Athanassoula, E" uniqKey="Athanassoula E" first="E." last="Athanassoula">E. Athanassoula</name>
<affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Laboratoire d'Astrophysique de Marseille-LAM, Université d'Aix-Marseille & CNRS, UMR7326, 38 rue F. Joliot-Curie</s1>
<s2>13388 Marseille</s2>
<s3>FRA</s3>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<wicri:noRegion>13388 Marseille</wicri:noRegion>
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<author><name sortKey="Bosma, Albert" sort="Bosma, Albert" uniqKey="Bosma A" first="Albert" last="Bosma">Albert Bosma</name>
<affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Laboratoire d'Astrophysique de Marseille-LAM, Université d'Aix-Marseille & CNRS, UMR7326, 38 rue F. Joliot-Curie</s1>
<s2>13388 Marseille</s2>
<s3>FRA</s3>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>France</country>
<wicri:noRegion>13388 Marseille</wicri:noRegion>
<placeName><settlement type="city">Marseille</settlement>
<region type="région" nuts="2">Provence-Alpes-Côte d'Azur</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Knapen, Johan H" sort="Knapen, Johan H" uniqKey="Knapen J" first="Johan H." last="Knapen">Johan H. Knapen</name>
<affiliation wicri:level="2"><inist:fA14 i1="06"><s1>Instituto de Astrofísica de Canarias</s1>
<s2>38200 La Laguna</s2>
<s3>ESP</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Espagne</country>
<placeName><region nuts="2" type="communauté">Canaries</region>
</placeName>
</affiliation>
<affiliation wicri:level="2"><inist:fA14 i1="07"><s1>Departamento de Astrofísica, Universidad de La Laguna</s1>
<s2>38205 La Laguna. Tenerife</s2>
<s3>ESP</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Espagne</country>
<placeName><region nuts="2" type="communauté">Canaries</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Gadotti, Dimitri A" sort="Gadotti, Dimitri A" uniqKey="Gadotti D" first="Dimitri A." last="Gadotti">Dimitri A. Gadotti</name>
<affiliation wicri:level="1"><inist:fA14 i1="08"><s1>European Southern Observatory, Casilla 19001</s1>
<s2>Santiago 19</s2>
<s3>CHL</s3>
<sZ>8 aut.</sZ>
</inist:fA14>
<country>Chili</country>
<wicri:noRegion>Santiago 19</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Sheth, Kartik" sort="Sheth, Kartik" uniqKey="Sheth K" first="Kartik" last="Sheth">Kartik Sheth</name>
<affiliation wicri:level="1"><inist:fA14 i1="09"><s1>National Radio Astronomy Observatory</s1>
<s2>Charlottesville, VA</s2>
<s3>USA</s3>
<sZ>9 aut.</sZ>
<sZ>13 aut.</sZ>
<sZ>16 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>National Radio Astronomy Observatory</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Hinz, Joannah L" sort="Hinz, Joannah L" uniqKey="Hinz J" first="Joannah L." last="Hinz">Joannah L. Hinz</name>
<affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Department of Astronomy. University of Arizona</s1>
<s2>Tucson, AZ</s2>
<s3>USA</s3>
<sZ>10 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Department of Astronomy. University of Arizona</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Regan, Michael W" sort="Regan, Michael W" uniqKey="Regan M" first="Michael W." last="Regan">Michael W. Regan</name>
<affiliation wicri:level="1"><inist:fA14 i1="11"><s1>Space Telescope Science Institute</s1>
<s2>Baltimore. MD</s2>
<s3>USA</s3>
<sZ>11 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>Space Telescope Science Institute</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gil De Paz, Armando" sort="Gil De Paz, Armando" uniqKey="Gil De Paz A" first="Armando" last="Gil De Paz">Armando Gil De Paz</name>
<affiliation wicri:level="4"><inist:fA14 i1="12"><s1>Departamento de Astrofísica, Universidad Complutense de Madrid</s1>
<s2>Madrid</s2>
<s3>ESP</s3>
<sZ>12 aut.</sZ>
</inist:fA14>
<country>Espagne</country>
<placeName><settlement type="city">Madrid</settlement>
<region nuts="2" type="region">Communauté de Madrid</region>
<settlement type="city">Madrid</settlement>
</placeName>
<orgName type="university">Université complutense de Madrid</orgName>
</affiliation>
</author>
<author><name sortKey="Munoz Mateos, Juan Carlos" sort="Munoz Mateos, Juan Carlos" uniqKey="Munoz Mateos J" first="Juan Carlos" last="Munoz-Mateos">Juan Carlos Munoz-Mateos</name>
<affiliation wicri:level="1"><inist:fA14 i1="09"><s1>National Radio Astronomy Observatory</s1>
<s2>Charlottesville, VA</s2>
<s3>USA</s3>
<sZ>9 aut.</sZ>
<sZ>13 aut.</sZ>
<sZ>16 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>National Radio Astronomy Observatory</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Menendez Delmestre, Karin" sort="Menendez Delmestre, Karin" uniqKey="Menendez Delmestre K" first="Karín" last="Menendez-Delmestre">Karín Menendez-Delmestre</name>
<affiliation wicri:level="3"><inist:fA14 i1="13"><s1>Observatorio do Valongo, Universidade Federal de Rio de Janeiro. Ladeira Pedro Antônio, 43, Saúde CEP 20080-090</s1>
<s2>Rio de Janeiro</s2>
<s3>BRA</s3>
<sZ>14 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">Rio de Janeiro</settlement>
<region type="state">État de Rio de Janeiro</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Seibert, Mark" sort="Seibert, Mark" uniqKey="Seibert M" first="Mark" last="Seibert">Mark Seibert</name>
<affiliation wicri:level="1"><inist:fA14 i1="14"><s1>The Observatories of the Carnegie Institution for Science</s1>
<s2>Pasadena, CA</s2>
<s3>USA</s3>
<sZ>15 aut.</sZ>
<sZ>19 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>The Observatories of the Carnegie Institution for Science</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Kim, Taehyun" sort="Kim, Taehyun" uniqKey="Kim T" first="Taehyun" last="Kim">Taehyun Kim</name>
<affiliation wicri:level="1"><inist:fA14 i1="09"><s1>National Radio Astronomy Observatory</s1>
<s2>Charlottesville, VA</s2>
<s3>USA</s3>
<sZ>9 aut.</sZ>
<sZ>13 aut.</sZ>
<sZ>16 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>National Radio Astronomy Observatory</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Mizusawa, Trisha" sort="Mizusawa, Trisha" uniqKey="Mizusawa T" first="Trisha" last="Mizusawa">Trisha Mizusawa</name>
<affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Department of Physics and Space Sciences, Florida Institute of Technology, 150 W. University Boulevard.</s1>
<s2>32901 Melbourne</s2>
<s3>AUS</s3>
<sZ>17 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<placeName><settlement type="city">Melbourne</settlement>
<region type="état">Victoria (État)</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Laine, Jarkko" sort="Laine, Jarkko" uniqKey="Laine J" first="Jarkko" last="Laine">Jarkko Laine</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Astronomy Division. Department of Physics, University of Oulu, P.O. Box 3000</s1>
<s2>90014</s2>
<s3>FIN</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>18 aut.</sZ>
</inist:fA14>
<country>Finlande</country>
<wicri:noRegion>90014</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ho, Luis C" sort="Ho, Luis C" uniqKey="Ho L" first="Luis C." last="Ho">Luis C. Ho</name>
<affiliation wicri:level="1"><inist:fA14 i1="14"><s1>The Observatories of the Carnegie Institution for Science</s1>
<s2>Pasadena, CA</s2>
<s3>USA</s3>
<sZ>15 aut.</sZ>
<sZ>19 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>The Observatories of the Carnegie Institution for Science</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Holwerda, Benne" sort="Holwerda, Benne" uniqKey="Holwerda B" first="Benne" last="Holwerda">Benne Holwerda</name>
<affiliation wicri:level="1"><inist:fA14 i1="16"><s1>European Space Agency, ESTEC, Keplerlaan 1</s1>
<s2>2200-AG, Noordwijk</s2>
<s3>NLD</s3>
<sZ>20 aut.</sZ>
</inist:fA14>
<country>Pays-Bas</country>
<wicri:noRegion>2200-AG, Noordwijk</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">The Astrophysical journal</title>
<title level="j" type="abbreviated">Astrophys. j.</title>
<idno type="ISSN">0004-637X</idno>
<imprint><date when="2012">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">The Astrophysical journal</title>
<title level="j" type="abbreviated">Astrophys. j.</title>
<idno type="ISSN">0004-637X</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dynamical evolution</term>
<term>Feedback</term>
<term>Galaxy structure</term>
<term>Luminosity</term>
<term>Photometry</term>
<term>Spiral galaxies</term>
<term>Stellar mass</term>
<term>Stellar structure</term>
<term>Supernovae</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Galaxies spirales</term>
<term>Structure stellaire</term>
<term>Structure galaxies</term>
<term>Luminosité</term>
<term>Masse stellaire</term>
<term>Supernova</term>
<term>Boucle réaction</term>
<term>Evolution dynamique</term>
<term>Photométrie</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Breaks in the radial luminosity profiles of galaxies have until now been mostly studied averaged over disks. Here, we study separately breaks in thin and thick disks in 70 edge-on galaxies using imaging from the Spitzer Survey of Stellar Structure in Galaxies. We built luminosity profiles of the thin and thick disks parallel to midplanes and we found that thin disks often truncate (77%). Thick disks truncate less often (31%), but when they do, their break radius is comparable with that in the thin disk. This suggests either two different truncation mechanisms-one of dynamical origin affecting both disks simultaneously and another one only affecting the thin disk-or a single mechanism that creates a truncation in one disk or in both depending on some galaxy property. Thin disks apparently antitruncate in around 40% of galaxies. However, in many cases, these antitruncations are an artifact caused by the superposition of a thin disk and a thick disk, with the latter having a longer scale length. We estimate the real thin disk antitruncation fraction to be less than 15%. We found that the ratio of the thick and thin stellar disk mass is roughly constant (0.2 < M<sub>T</sub>
/M<sub>t</sub>
 < 0.7) for circular velocities ν<sub>c</sub>
 > 120 km s<sup>-1</sup>
, but becomes much larger at smaller velocities. We hypothesize that this is due to a combination of a high efficiency of supernova feedback and a slower dynamical evolution in lower-mass galaxies causing stellar thin disks to be younger and less massive than in higher-mass galaxies.</div>
</front>
</TEI>
<affiliations><list><country><li>Australie</li>
<li>Brésil</li>
<li>Chili</li>
<li>Corée du Sud</li>
<li>Espagne</li>
<li>Finlande</li>
<li>France</li>
<li>Pays-Bas</li>
<li>États-Unis</li>
</country>
<region><li>Canaries</li>
<li>Communauté de Madrid</li>
<li>Finlande occidentale</li>
<li>Provence-Alpes-Côte d'Azur</li>
<li>Victoria (État)</li>
<li>État de Rio de Janeiro</li>
</region>
<settlement><li>Madrid</li>
<li>Marseille</li>
<li>Melbourne</li>
<li>Rio de Janeiro</li>
<li>Turku</li>
</settlement>
<orgName><li>Université complutense de Madrid</li>
<li>Université de Turku</li>
</orgName>
</list>
<tree><country name="Finlande"><noRegion><name sortKey="Comeron, Sebastien" sort="Comeron, Sebastien" uniqKey="Comeron S" first="Sébastien" last="Comeron">Sébastien Comeron</name>
</noRegion>
<name sortKey="Laine, Jarkko" sort="Laine, Jarkko" uniqKey="Laine J" first="Jarkko" last="Laine">Jarkko Laine</name>
<name sortKey="Laurikainen, Eija" sort="Laurikainen, Eija" uniqKey="Laurikainen E" first="Eija" last="Laurikainen">Eija Laurikainen</name>
<name sortKey="Laurikainen, Eija" sort="Laurikainen, Eija" uniqKey="Laurikainen E" first="Eija" last="Laurikainen">Eija Laurikainen</name>
<name sortKey="Salo, Heikki" sort="Salo, Heikki" uniqKey="Salo H" first="Heikki" last="Salo">Heikki Salo</name>
</country>
<country name="Corée du Sud"><noRegion><name sortKey="Comeron, Sebastien" sort="Comeron, Sebastien" uniqKey="Comeron S" first="Sébastien" last="Comeron">Sébastien Comeron</name>
</noRegion>
</country>
<country name="États-Unis"><noRegion><name sortKey="Elmegreen, Bruce G" sort="Elmegreen, Bruce G" uniqKey="Elmegreen B" first="Bruce G." last="Elmegreen">Bruce G. Elmegreen</name>
</noRegion>
<name sortKey="Hinz, Joannah L" sort="Hinz, Joannah L" uniqKey="Hinz J" first="Joannah L." last="Hinz">Joannah L. Hinz</name>
<name sortKey="Ho, Luis C" sort="Ho, Luis C" uniqKey="Ho L" first="Luis C." last="Ho">Luis C. Ho</name>
<name sortKey="Kim, Taehyun" sort="Kim, Taehyun" uniqKey="Kim T" first="Taehyun" last="Kim">Taehyun Kim</name>
<name sortKey="Munoz Mateos, Juan Carlos" sort="Munoz Mateos, Juan Carlos" uniqKey="Munoz Mateos J" first="Juan Carlos" last="Munoz-Mateos">Juan Carlos Munoz-Mateos</name>
<name sortKey="Regan, Michael W" sort="Regan, Michael W" uniqKey="Regan M" first="Michael W." last="Regan">Michael W. Regan</name>
<name sortKey="Seibert, Mark" sort="Seibert, Mark" uniqKey="Seibert M" first="Mark" last="Seibert">Mark Seibert</name>
<name sortKey="Sheth, Kartik" sort="Sheth, Kartik" uniqKey="Sheth K" first="Kartik" last="Sheth">Kartik Sheth</name>
</country>
<country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Athanassoula, E" sort="Athanassoula, E" uniqKey="Athanassoula E" first="E." last="Athanassoula">E. Athanassoula</name>
</region>
<name sortKey="Bosma, Albert" sort="Bosma, Albert" uniqKey="Bosma A" first="Albert" last="Bosma">Albert Bosma</name>
</country>
<country name="Espagne"><region name="Canaries"><name sortKey="Knapen, Johan H" sort="Knapen, Johan H" uniqKey="Knapen J" first="Johan H." last="Knapen">Johan H. Knapen</name>
</region>
<name sortKey="Gil De Paz, Armando" sort="Gil De Paz, Armando" uniqKey="Gil De Paz A" first="Armando" last="Gil De Paz">Armando Gil De Paz</name>
<name sortKey="Knapen, Johan H" sort="Knapen, Johan H" uniqKey="Knapen J" first="Johan H." last="Knapen">Johan H. Knapen</name>
</country>
<country name="Chili"><noRegion><name sortKey="Gadotti, Dimitri A" sort="Gadotti, Dimitri A" uniqKey="Gadotti D" first="Dimitri A." last="Gadotti">Dimitri A. Gadotti</name>
</noRegion>
</country>
<country name="Brésil"><region name="État de Rio de Janeiro"><name sortKey="Menendez Delmestre, Karin" sort="Menendez Delmestre, Karin" uniqKey="Menendez Delmestre K" first="Karín" last="Menendez-Delmestre">Karín Menendez-Delmestre</name>
</region>
</country>
<country name="Australie"><region name="Victoria (État)"><name sortKey="Mizusawa, Trisha" sort="Mizusawa, Trisha" uniqKey="Mizusawa T" first="Trisha" last="Mizusawa">Trisha Mizusawa</name>
</region>
</country>
<country name="Pays-Bas"><noRegion><name sortKey="Holwerda, Benne" sort="Holwerda, Benne" uniqKey="Holwerda B" first="Benne" last="Holwerda">Benne Holwerda</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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	Serveur d'exploration sur les relations entre la France et l'Australie
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BREAKS IN THIN AND THICK DISKS OF EDGE-ON GALAXIES IMAGED IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S4G)

BREAKS IN THIN AND THICK DISKS OF EDGE-ON GALAXIES IMAGED IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S4G)

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