PittsburghV1, France, Analysis, bibRecord, 000715

Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution

Identifieur interne : 000715 ( France/Analysis ); précédent : 000714; suivant : 000716

Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution

Auteurs : F. Martins [France] ; D. J. Hillier [États-Unis] ; J. C. Bouret [France] ; E. Depagne [États-Unis] ; C. Foellmi [France] ; S. Marchenko [États-Unis] ; A. F. Moffat [Canada]

Source :

Astronomy and Astrophysics - A&A [ 0004-6361 ] ; 2009-02.

RBID : Hal:hal-00384700

English descriptors

mix :
- Magellanic Clouds, outflows, stars: Wolf-Rayet, stars: atmospheres, stars: evolution, stars: wind.

Abstract

Aims. We aim to assess the nature of three WNh stars in the SMC, to constrain stellar evolution beyond the main sequence at low metallicity, and to investigate the metallicity dependence of the clumping properties of massive stars. Methods: We compute atmosphere models to derive the stellar and wind properties of the three WNh targets. A FUV/UV/optical/near-infrared analysis gives access to temperatures, luminosities, mass loss rates, terminal velocities and stellar abundances. Results: We find that all stars still have a large hydrogen mass fraction in their atmosphere, and show clear signs of CNO processing in their surface abundances. One of the targets can be accounted for by normal stellar evolution. It is a star with an initial mass around 40-50 Mȯ in, or close to, the core He burning phase. The other two objects likely follow a peculiar evolution, governed by fast rotation. In particular, one object is likely evolving homogeneously due to its position blue-ward of the main sequence and its high H mass fraction. The clumping factor of one star is found to be 0.15 ± 0.05. This is comparable to values found for Galactic Wolf-Rayet stars, indicating that within the uncertainties, the clumping factor does not seem to depend on metallicity. Based on observations collected at the ESO Very Large Telescope (programs 077.D-0029, 071.D-0272, 074.D-0696).

Url:

https://hal.archives-ouvertes.fr/hal-00384700

DOI: 10.1051/0004-6361:200811014

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Hal, to step Corpus: 000486
to stream Hal, to step Curation: 000486
to stream Hal, to step Checkpoint: 000523
to stream Main, to step Merge: 00AD63
to stream Main, to step Curation: 00A612
to stream Main, to step Exploration: 00A612
to stream France, to step Extraction: 000715

Links to Exploration step

Hal:hal-00384700

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution</title>
<author><name sortKey="Martins, F" sort="Martins, F" uniqKey="Martins F" first="F." last="Martins">F. Martins</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-117" status="VALID"><orgName>Groupe de Recherche en Astronomie et Astrophysique du Languedoc</orgName>
<orgName type="acronym">GRAAL</orgName>
<desc><address><addrLine>GRAAL - CC. 72 Univ. Montpellier II 34095 MONTPELLIER CEDEX 5</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.graal.univ-montp2.fr/</ref>
</desc>
<listRelation><relation active="#struct-92690" type="direct"></relation>
<relation active="#struct-300045" type="direct"></relation>
<relation name="UMR5024" active="#struct-441569" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-92690" type="direct"><org type="institution" xml:id="struct-92690" status="OLD">          <orgName>Université Montpellier 2 - Sciences et Techniques</orgName>
          <orgName type="acronym">UM2</orgName>
          <date type="end">2014-12-31</date>
          <desc>            <address>              <addrLine>Place Eugène Bataillon - 34095 Montpellier cedex 5</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.univ-montp2.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR5024" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
</affiliation>
</author>
<author><name sortKey="Hillier, D J" sort="Hillier, D J" uniqKey="Hillier D" first="D. J." last="Hillier">D. J. Hillier</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-5648" status="INCOMING">          <orgName>Department of Physics and Astronomy</orgName>
          <desc>            <address>              <addrLine>3941 O'Hara Street, Pittsburgh, PA 15260</addrLine>
              <country key="US"></country>
            </address>
          </desc>
          <listRelation>            <relation active="#struct-378064" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle active="#struct-378064" type="direct"><org type="institution" xml:id="struct-378064" status="INCOMING">          <orgName>University of Pittsburgh</orgName>
          <desc>            <address>              <country key="FR"></country>
            </address>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>États-Unis</country>
<placeName><settlement type="city">Pittsburgh</settlement>
<region type="state">Pennsylvanie</region>
</placeName>
<orgName type="university">Université de Pittsburgh</orgName>
</affiliation>
</author>
<author><name sortKey="Bouret, J C" sort="Bouret, J C" uniqKey="Bouret J" first="J. C." last="Bouret">J. C. Bouret</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-179944" status="VALID">          <idno type="IdRef">157042596</idno>
          <idno type="RNSR">201220274P</idno>
          <orgName>Laboratoire d'Astrophysique de Marseille</orgName>
          <orgName type="acronym">LAM</orgName>
          <date type="start">2012</date>
          <desc>            <address>              <addrLine>Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.lam.fr/</ref>
          </desc>
          <listRelation>            <relation name="UMR7326" active="#struct-198056" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMR7326" active="#struct-441569" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle name="UMR7326" active="#struct-198056" type="direct"><org type="institution" xml:id="struct-198056" status="VALID">          <idno type="IdRef">15863621X</idno>
          <idno type="ISNI">0000 0001 2176 4817</idno>
          <orgName>Aix Marseille Université</orgName>
          <orgName type="acronym">AMU</orgName>
          <date type="start">2012-01-01</date>
          <desc>            <address>              <addrLine>Aix-Marseille UniversitéJardins du Pharo58 Boulevard Charles Livon13284 Marseille cedex 7</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.univ-amu.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR7326" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Marseille</settlement>
<region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region>
</placeName>
<orgName type="university">Université d'Aix-Marseille</orgName>
</affiliation>
</author>
<author><name sortKey="Depagne, E" sort="Depagne, E" uniqKey="Depagne E" first="E." last="Depagne">E. Depagne</name>
<affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-88084" status="VALID">          <orgName>Las Cumbres Observatory</orgName>
          <orgName type="acronym">LCO</orgName>
          <desc>            <address>              <addrLine>Goleta, CA 93117, USA</addrLine>
              <country key="US"></country>
            </address>
            <ref type="url">https://lco.global</ref>
          </desc>
        </hal:affiliation>
<country>États-Unis</country>
</affiliation>
</author>
<author><name sortKey="Foellmi, C" sort="Foellmi, C" uniqKey="Foellmi C" first="C." last="Foellmi">C. Foellmi</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-112" status="VALID">          <orgName>Laboratoire d'Astrophysique de Grenoble</orgName>
          <orgName type="acronym">LAOG</orgName>
          <desc>            <address>              <addrLine>414, rue de la piscine BP 53 38041 GRENOBLE cedex 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www-laog.obs.ujf-grenoble.fr/</ref>
          </desc>
          <listRelation>            <relation active="#struct-1850" type="direct"></relation>
            <relation active="#struct-51016" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMS832" active="#struct-441569" type="direct"></relation>
            <relation name="UMR5571" active="#struct-441569" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle active="#struct-1850" type="direct"><org type="laboratory" xml:id="struct-1850" status="VALID">          <orgName>Observatoire des Sciences de l'Univers de Grenoble</orgName>
          <orgName type="acronym">OSUG</orgName>
          <desc>            <address>              <addrLine>414 Rue de la piscine - BP 53 38041 GRENOBLE CEDEX 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://osug.obs.ujf-grenoble.fr/</ref>
          </desc>
          <listRelation>            <relation active="#struct-51016" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMS832" active="#struct-441569" type="direct"></relation>
          </listRelation>
        </org>
</tutelle>
<tutelle active="#struct-51016" type="direct"><org type="institution" xml:id="struct-51016" status="OLD">          <idno type="IdRef">026404796</idno>
          <orgName>Université Joseph Fourier - Grenoble 1</orgName>
          <orgName type="acronym">UJF</orgName>
          <date type="end">2015-12-31</date>
          <desc>            <address>              <addrLine>BP 53 - 38041 Grenoble Cedex 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.ujf-grenoble.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMS832" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR5571" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Grenoble</settlement>
<region type="region" nuts="2">Auvergne-Rhône-Alpes</region>
<region type="old region" nuts="2">Rhône-Alpes</region>
</placeName>
<orgName type="university">Université Joseph Fourier</orgName>
<orgName type="institution" wicri:auto="newGroup">Université de Grenoble</orgName>
</affiliation>
</author>
<author><name sortKey="Marchenko, S" sort="Marchenko, S" uniqKey="Marchenko S" first="S." last="Marchenko">S. Marchenko</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-93543" status="INCOMING"><orgName>Department of Physics and Astronomy</orgName>
<desc><address><addrLine>Western Kentucky University, Bowling Green, KY, USA</addrLine>
<country key="US"></country>
</address>
</desc>
<listRelation><relation active="#struct-323009" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-323009" type="direct"><org type="institution" xml:id="struct-323009" status="INCOMING"><orgName>Western Kentucky University</orgName>
<desc><address><country key="FR"></country>
</address>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>États-Unis</country>
</affiliation>
</author>
<author><name sortKey="Moffat, A F" sort="Moffat, A F" uniqKey="Moffat A" first="A. F." last="Moffat">A. F. Moffat</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-4542" status="VALID"><orgName>Département de Physique [Montréal]</orgName>
<desc><address><addrLine>Département de physique Université de Montréal C.P. 6128, succ. centre-ville Montréal (Québec) H3C 3J7 Canada</addrLine>
<country key="CA"></country>
</address>
<ref type="url">http://www.phys.umontreal.ca/</ref>
</desc>
<listRelation><relation active="#struct-300447" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-300447" type="direct"><org type="institution" xml:id="struct-300447" status="VALID">          <orgName>Université de Montréal</orgName>
          <desc>            <address>              <addrLine>CP 6128, Montréal, Que., Canada H3C 3J7</addrLine>
              <country key="CA"></country>
            </address>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>Canada</country>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">HAL</idno>
<idno type="RBID">Hal:hal-00384700</idno>
<idno type="halId">hal-00384700</idno>
<idno type="halUri">https://hal.archives-ouvertes.fr/hal-00384700</idno>
<idno type="url">https://hal.archives-ouvertes.fr/hal-00384700</idno>
<idno type="doi">10.1051/0004-6361:200811014</idno>
<date when="2009-02">2009-02</date>
<idno type="wicri:Area/Hal/Corpus">000486</idno>
<idno type="wicri:Area/Hal/Curation">000486</idno>
<idno type="wicri:Area/Hal/Checkpoint">000523</idno>
<idno type="wicri:explorRef" wicri:stream="Hal" wicri:step="Checkpoint">000523</idno>
<idno type="wicri:doubleKey">0004-6361:2009:Martins F:properties:of:wnh</idno>
<idno type="wicri:Area/Main/Merge">00AD63</idno>
<idno type="wicri:Area/Main/Curation">00A612</idno>
<idno type="wicri:Area/Main/Exploration">00A612</idno>
<idno type="wicri:Area/France/Extraction">000715</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en">Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution</title>
<author><name sortKey="Martins, F" sort="Martins, F" uniqKey="Martins F" first="F." last="Martins">F. Martins</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-117" status="VALID"><orgName>Groupe de Recherche en Astronomie et Astrophysique du Languedoc</orgName>
<orgName type="acronym">GRAAL</orgName>
<desc><address><addrLine>GRAAL - CC. 72 Univ. Montpellier II 34095 MONTPELLIER CEDEX 5</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.graal.univ-montp2.fr/</ref>
</desc>
<listRelation><relation active="#struct-92690" type="direct"></relation>
<relation active="#struct-300045" type="direct"></relation>
<relation name="UMR5024" active="#struct-441569" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-92690" type="direct"><org type="institution" xml:id="struct-92690" status="OLD">          <orgName>Université Montpellier 2 - Sciences et Techniques</orgName>
          <orgName type="acronym">UM2</orgName>
          <date type="end">2014-12-31</date>
          <desc>            <address>              <addrLine>Place Eugène Bataillon - 34095 Montpellier cedex 5</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.univ-montp2.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR5024" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
</affiliation>
</author>
<author><name sortKey="Hillier, D J" sort="Hillier, D J" uniqKey="Hillier D" first="D. J." last="Hillier">D. J. Hillier</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-5648" status="INCOMING">          <orgName>Department of Physics and Astronomy</orgName>
          <desc>            <address>              <addrLine>3941 O'Hara Street, Pittsburgh, PA 15260</addrLine>
              <country key="US"></country>
            </address>
          </desc>
          <listRelation>            <relation active="#struct-378064" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle active="#struct-378064" type="direct"><org type="institution" xml:id="struct-378064" status="INCOMING">          <orgName>University of Pittsburgh</orgName>
          <desc>            <address>              <country key="FR"></country>
            </address>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>États-Unis</country>
<placeName><settlement type="city">Pittsburgh</settlement>
<region type="state">Pennsylvanie</region>
</placeName>
<orgName type="university">Université de Pittsburgh</orgName>
</affiliation>
</author>
<author><name sortKey="Bouret, J C" sort="Bouret, J C" uniqKey="Bouret J" first="J. C." last="Bouret">J. C. Bouret</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-179944" status="VALID">          <idno type="IdRef">157042596</idno>
          <idno type="RNSR">201220274P</idno>
          <orgName>Laboratoire d'Astrophysique de Marseille</orgName>
          <orgName type="acronym">LAM</orgName>
          <date type="start">2012</date>
          <desc>            <address>              <addrLine>Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.lam.fr/</ref>
          </desc>
          <listRelation>            <relation name="UMR7326" active="#struct-198056" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMR7326" active="#struct-441569" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle name="UMR7326" active="#struct-198056" type="direct"><org type="institution" xml:id="struct-198056" status="VALID">          <idno type="IdRef">15863621X</idno>
          <idno type="ISNI">0000 0001 2176 4817</idno>
          <orgName>Aix Marseille Université</orgName>
          <orgName type="acronym">AMU</orgName>
          <date type="start">2012-01-01</date>
          <desc>            <address>              <addrLine>Aix-Marseille UniversitéJardins du Pharo58 Boulevard Charles Livon13284 Marseille cedex 7</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.univ-amu.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR7326" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Marseille</settlement>
<region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region>
</placeName>
<orgName type="university">Université d'Aix-Marseille</orgName>
</affiliation>
</author>
<author><name sortKey="Depagne, E" sort="Depagne, E" uniqKey="Depagne E" first="E." last="Depagne">E. Depagne</name>
<affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-88084" status="VALID">          <orgName>Las Cumbres Observatory</orgName>
          <orgName type="acronym">LCO</orgName>
          <desc>            <address>              <addrLine>Goleta, CA 93117, USA</addrLine>
              <country key="US"></country>
            </address>
            <ref type="url">https://lco.global</ref>
          </desc>
        </hal:affiliation>
<country>États-Unis</country>
</affiliation>
</author>
<author><name sortKey="Foellmi, C" sort="Foellmi, C" uniqKey="Foellmi C" first="C." last="Foellmi">C. Foellmi</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-112" status="VALID">          <orgName>Laboratoire d'Astrophysique de Grenoble</orgName>
          <orgName type="acronym">LAOG</orgName>
          <desc>            <address>              <addrLine>414, rue de la piscine BP 53 38041 GRENOBLE cedex 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www-laog.obs.ujf-grenoble.fr/</ref>
          </desc>
          <listRelation>            <relation active="#struct-1850" type="direct"></relation>
            <relation active="#struct-51016" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMS832" active="#struct-441569" type="direct"></relation>
            <relation name="UMR5571" active="#struct-441569" type="direct"></relation>
          </listRelation>
        <tutelles><tutelle active="#struct-1850" type="direct"><org type="laboratory" xml:id="struct-1850" status="VALID">          <orgName>Observatoire des Sciences de l'Univers de Grenoble</orgName>
          <orgName type="acronym">OSUG</orgName>
          <desc>            <address>              <addrLine>414 Rue de la piscine - BP 53 38041 GRENOBLE CEDEX 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://osug.obs.ujf-grenoble.fr/</ref>
          </desc>
          <listRelation>            <relation active="#struct-51016" type="direct"></relation>
            <relation active="#struct-300045" type="direct"></relation>
            <relation name="UMS832" active="#struct-441569" type="direct"></relation>
          </listRelation>
        </org>
</tutelle>
<tutelle active="#struct-51016" type="direct"><org type="institution" xml:id="struct-51016" status="OLD">          <idno type="IdRef">026404796</idno>
          <orgName>Université Joseph Fourier - Grenoble 1</orgName>
          <orgName type="acronym">UJF</orgName>
          <date type="end">2015-12-31</date>
          <desc>            <address>              <addrLine>BP 53 - 38041 Grenoble Cedex 9</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.ujf-grenoble.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle active="#struct-300045" type="direct"><org type="institution" xml:id="struct-300045" status="VALID">          <orgName>Institut national des sciences de l'Univers </orgName>
          <orgName type="acronym">INSU - CNRS</orgName>
          <date type="start">2007-04-19</date>
          <desc>            <address>              <addrLine>INSU-CNRS3 rue Michel-Ange, 75794 Paris Cedex 16</addrLine>
              <country key="FR"></country>
            </address>
            <ref type="url">http://www.insu.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMS832" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
<tutelle name="UMR5571" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID">          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>            <address>              <country key="FR"></country>
            </address>
            <ref type="url">http://www.cnrs.fr/</ref>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Grenoble</settlement>
<region type="region" nuts="2">Auvergne-Rhône-Alpes</region>
<region type="old region" nuts="2">Rhône-Alpes</region>
</placeName>
<orgName type="university">Université Joseph Fourier</orgName>
<orgName type="institution" wicri:auto="newGroup">Université de Grenoble</orgName>
</affiliation>
</author>
<author><name sortKey="Marchenko, S" sort="Marchenko, S" uniqKey="Marchenko S" first="S." last="Marchenko">S. Marchenko</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-93543" status="INCOMING"><orgName>Department of Physics and Astronomy</orgName>
<desc><address><addrLine>Western Kentucky University, Bowling Green, KY, USA</addrLine>
<country key="US"></country>
</address>
</desc>
<listRelation><relation active="#struct-323009" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-323009" type="direct"><org type="institution" xml:id="struct-323009" status="INCOMING"><orgName>Western Kentucky University</orgName>
<desc><address><country key="FR"></country>
</address>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>États-Unis</country>
</affiliation>
</author>
<author><name sortKey="Moffat, A F" sort="Moffat, A F" uniqKey="Moffat A" first="A. F." last="Moffat">A. F. Moffat</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-4542" status="VALID"><orgName>Département de Physique [Montréal]</orgName>
<desc><address><addrLine>Département de physique Université de Montréal C.P. 6128, succ. centre-ville Montréal (Québec) H3C 3J7 Canada</addrLine>
<country key="CA"></country>
</address>
<ref type="url">http://www.phys.umontreal.ca/</ref>
</desc>
<listRelation><relation active="#struct-300447" type="direct"></relation>
</listRelation>
<tutelles><tutelle active="#struct-300447" type="direct"><org type="institution" xml:id="struct-300447" status="VALID">          <orgName>Université de Montréal</orgName>
          <desc>            <address>              <addrLine>CP 6128, Montréal, Que., Canada H3C 3J7</addrLine>
              <country key="CA"></country>
            </address>
          </desc>
        </org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>Canada</country>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1051/0004-6361:200811014</idno>
<series><title level="j">Astronomy and Astrophysics - A&A</title>
<idno type="ISSN">0004-6361</idno>
<imprint><date type="datePub">2009-02</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Magellanic Clouds</term>
<term>outflows</term>
<term>stars: Wolf-Rayet</term>
<term>stars: atmospheres</term>
<term>stars: evolution</term>
<term>stars: wind</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Aims. We aim to assess the nature of three WNh stars in the SMC, to constrain stellar evolution beyond the main sequence at low metallicity, and to investigate the metallicity dependence of the clumping properties of massive stars. Methods: We compute atmosphere models to derive the stellar and wind properties of the three WNh targets. A FUV/UV/optical/near-infrared analysis gives access to temperatures, luminosities, mass loss rates, terminal velocities and stellar abundances. Results: We find that all stars still have a large hydrogen mass fraction in their atmosphere, and show clear signs of CNO processing in their surface abundances. One of the targets can be accounted for by normal stellar evolution. It is a star with an initial mass around 40-50 Mȯ in, or close to, the core He burning phase. The other two objects likely follow a peculiar evolution, governed by fast rotation. In particular, one object is likely evolving homogeneously due to its position blue-ward of the main sequence and its high H mass fraction. The clumping factor of one star is found to be 0.15 ± 0.05. This is comparable to values found for Galactic Wolf-Rayet stars, indicating that within the uncertainties, the clumping factor does not seem to depend on metallicity. Based on observations collected at the ESO Very Large Telescope (programs 077.D-0029, 071.D-0272, 074.D-0696).</div>
</front>
</TEI>
<affiliations><list><country><li>Canada</li>
<li>France</li>
<li>États-Unis</li>
</country>
<region><li>Auvergne-Rhône-Alpes</li>
<li>Pennsylvanie</li>
<li>Provence-Alpes-Côte d'Azur</li>
<li>Rhône-Alpes</li>
</region>
<settlement><li>Grenoble</li>
<li>Marseille</li>
<li>Pittsburgh</li>
</settlement>
<orgName><li>Université Joseph Fourier</li>
<li>Université d'Aix-Marseille</li>
<li>Université de Grenoble</li>
<li>Université de Pittsburgh</li>
</orgName>
</list>
<tree><country name="France"><noRegion><name sortKey="Martins, F" sort="Martins, F" uniqKey="Martins F" first="F." last="Martins">F. Martins</name>
</noRegion>
<name sortKey="Bouret, J C" sort="Bouret, J C" uniqKey="Bouret J" first="J. C." last="Bouret">J. C. Bouret</name>
<name sortKey="Foellmi, C" sort="Foellmi, C" uniqKey="Foellmi C" first="C." last="Foellmi">C. Foellmi</name>
</country>
<country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Hillier, D J" sort="Hillier, D J" uniqKey="Hillier D" first="D. J." last="Hillier">D. J. Hillier</name>
</region>
<name sortKey="Depagne, E" sort="Depagne, E" uniqKey="Depagne E" first="E." last="Depagne">E. Depagne</name>
<name sortKey="Marchenko, S" sort="Marchenko, S" uniqKey="Marchenko S" first="S." last="Marchenko">S. Marchenko</name>
</country>
<country name="Canada"><noRegion><name sortKey="Moffat, A F" sort="Moffat, A F" uniqKey="Moffat A" first="A. F." last="Moffat">A. F. Moffat</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Amérique/explor/PittsburghV1/Data/France/Analysis

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000715 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/France/Analysis/biblio.hfd -nk 000715 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Amérique
   |area=    PittsburghV1
   |flux=    France
   |étape=   Analysis
   |type=    RBID
   |clé=     Hal:hal-00384700
   |texte=   Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution
}}

This area was generated with Dilib version V0.6.38.
Data generation: Fri Jun 18 17:37:45 2021. Site generation: Fri Jun 18 18:15:47 2021

	Serveur d'exploration sur Pittsburgh
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur Pittsburgh

Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution

Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolution

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri