RAVE spectroscopy of luminous blue variables in the Large Magellanic Cloud
Identifieur interne : 008137 ( Main/Exploration ); précédent : 008136; suivant : 008138RAVE spectroscopy of luminous blue variables in the Large Magellanic Cloud
Auteurs : U. Munari [Italie] ; A. Siviero [Italie, Allemagne] ; O. Bienayme [France] ; J. Binney [Royaume-Uni] ; J. Bland-Hawthorn [Australie] ; R. Campbell [Allemagne, Australie] ; K. C. Freeman [Australie] ; J. P. Fulbright [États-Unis] ; B. K. Gibson [Royaume-Uni] ; G. Gilmore [Royaume-Uni] ; E. K. Grebel [Allemagne] ; A. Helmil [Pays-Bas] ; J. F. Navarre [Canada] ; Q. A. Parker [Australie] ; W. Reid [Australie] ; G. M. Seabroke [Royaume-Uni] ; A. Siebert [France, Allemagne] ; M. Steinmetz [Allemagne] ; F. G. Watson [Australie] ; M. Williams [Allemagne, Australie] ; R. F. G. Wyse [États-Unis] ; T. Zwitter [Slovénie]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2009.
Descripteurs français
- Pascal (Inist)
- Spectrométrie, Etoile variable bleue lumineuse, Grand Nuage Magellan, Evolution galactique, Structure galactique, Etoile B, Spectre stellaire, Etoile particulière, Vitesse radiale, Raie émission, Raie absorption, Quiescence, Variabilité, Photoionisation, Spectre émission, Perte masse, Etoile raie émission, Vent stellaire, Etoile type Wolf Rayet, Galaxies, Nuages Magellan, Voie lactée.
- Wicri :
- topic : Spectrométrie.
English descriptors
- KwdEn :
- Absorption line, B stars, Emission line, Emission line stars, Emission spectra, Galactic evolution, Galactic structure, Galaxies, Large Magellanic Cloud, Luminous blue variable star, Magellanic Clouds, Mass loss, Milky Way, Peculiar stars, Photoionization, Quiescence, Radial velocity, Spectroscopy, Stellar spectra, Stellar winds, Variability, Wolf-Rayet stars.
Abstract
Context. The RAVE spectroscopic survey for galactic structure and evolution obtains 8400-8800 Å spectra at 7500 resolving power at the UK Schmidt Telescope using the 6dF multi-fiber positioner. More than 300 000 9 < IC ≤ 12 and |b| ≥ 25° southern stars have been observed to date. Aims. This paper presents the first intrinsic examination of stellar spectra from the RAVE survey, aimed at evaluating their diagnostic potential for peculiar stars and at contributing to the general understanding of luminous blue variables (LBVs). Methods. We used the multi-epoch spectra for all seven LBVs observed, between 2005 and 2008, in the Large Magellanic Cloud (LMC) by the RAVE survey. Results. We demonstrate that RAVE spectra possess significant diagnostic potential when applied to peculiar stars and, in particular, LBVs. The behaviour of the radial velocities for both emission and absorption lines, and the spectral changes between outburst and quiescence states are described and found to agree with evidence gathered at more conventional wavelengths. The wind outflow signatures and their variability are investigated, with multi-components detected in S Doradus. Photoionisation modelling of the rich emission line spectrum of R 127 shows evidence of a massive detached ionised shell that was ejected during the 1982-2000 outburst. Surface inhomogeneities in the nuclear-processed material, brought to the surface by heavy mass loss, could have been observed in S Doradus, even if alternative explanations are possible. We also detect the transition from quiescence to outburst state in R 71. Finally, our spectrum of R 84 offers one of the clearest views of its cool companion.
Affiliations:
- Allemagne, Australie, Canada, France, Italie, Pays-Bas, Royaume-Uni, Slovénie, États-Unis
- Alsace (région administrative), Angleterre, Angleterre de l'Est, Bade-Wurtemberg, Brandebourg, District de Karlsruhe, Grand Est, Groningue (province), Maryland, Nouvelle-Galles du Sud, Oxfordshire
- Cambridge, Groningue, Groningue (ville), Heidelberg, Oxford, Potsdam, Strasbourg, Sydney
- Université d'Oxford, Université de Cambridge, Université de Groningue, Université de Sydney
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Gibson</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Jeremiah Horrocks Institute for Astrophysics & Super-computing, University of Central Lancashire</s1><s2>Preston</s2><s3>GBR</s3><sZ>9 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Preston</wicri:noRegion></affiliation></author><author><name sortKey="Gilmore, G" sort="Gilmore, G" uniqKey="Gilmore G" first="G." last="Gilmore">G. Gilmore</name><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Institute of Astronomy, University of Cambridge</s1><s3>GBR</s3><sZ>10 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName><orgName type="university">Université de Cambridge</orgName></affiliation></author><author><name sortKey="Grebel, E K" sort="Grebel, E K" uniqKey="Grebel E" first="E. K." last="Grebel">E. K. Grebel</name><affiliation wicri:level="3"><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg</s1><s2>Heidelberg</s2><s3>DEU</s3><sZ>11 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author><author><name sortKey="Helmil, A" sort="Helmil, A" uniqKey="Helmil A" first="A." last="Helmil">A. Helmil</name><affiliation wicri:level="4"><inist:fA14 i1="12"><s1>Kapteyn Astronomical Institute, University of Groningen</s1><s2>Groningen</s2><s3>NLD</s3><sZ>12 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Groningue</settlement><region nuts="2" type="province">Groningue (province)</region><settlement type="city">Groningue (ville)</settlement></placeName><orgName type="university">Université de Groningue</orgName></affiliation></author><author><name sortKey="Navarre, J F" sort="Navarre, J F" uniqKey="Navarre J" first="J. F." last="Navarre">J. F. Navarre</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>University of Victoria</s1><s2>Victoria</s2><s3>CAN</s3><sZ>13 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>University of Victoria</wicri:noRegion></affiliation></author><author><name sortKey="Parker, Q A" sort="Parker, Q A" uniqKey="Parker Q" first="Q. A." last="Parker">Q. A. Parker</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Macquarie University</s1><s2>Sydney</s2><s3>AUS</s3><sZ>6 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Reid, W" sort="Reid, W" uniqKey="Reid W" first="W." last="Reid">W. Reid</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Macquarie University</s1><s2>Sydney</s2><s3>AUS</s3><sZ>6 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Seabroke, G M" sort="Seabroke, G M" uniqKey="Seabroke G" first="G. M." last="Seabroke">G. M. Seabroke</name><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Institute of Astronomy, University of Cambridge</s1><s3>GBR</s3><sZ>10 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName><orgName type="university">Université de Cambridge</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>E2v Centre for Electronic Imaging, Planetary and Space Sciences Research Institute, The Open University</s1><s2>Milton Keynes</s2><s3>GBR</s3><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Milton Keynes</wicri:noRegion></affiliation></author><author><name sortKey="Siebert, A" sort="Siebert, A" uniqKey="Siebert A" first="A." last="Siebert">A. Siebert</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Observatoire de Strasbourg</s1><s2>Strasbourg</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Steinmetz, M" sort="Steinmetz, M" uniqKey="Steinmetz M" first="M." last="Steinmetz">M. Steinmetz</name><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Watson, F G" sort="Watson, F G" uniqKey="Watson F" first="F. G." last="Watson">F. G. Watson</name><affiliation wicri:level="3"><inist:fA14 i1="15"><s1>Anglo-Australian Observatory</s1><s2>Sydney</s2><s3>AUS</s3><sZ>19 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Williams, M" sort="Williams, M" uniqKey="Williams M" first="M." last="Williams">M. Williams</name><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>RSAA Australian National University</s1><s2>Camberra</s2><s3>AUS</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>RSAA Australian National University</wicri:noRegion></affiliation></author><author><name sortKey="Wyse, R F G" sort="Wyse, R F G" uniqKey="Wyse R" first="R. F. G." last="Wyse">R. F. G. Wyse</name><affiliation wicri:level="2"><inist:fA14 i1="08"><s1>Johns Hopkins University</s1><s2>Baltimore, Maryland</s2><s3>USA</s3><sZ>8 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Maryland</region></placeName></affiliation></author><author><name sortKey="Zwitter, T" sort="Zwitter, T" uniqKey="Zwitter T" first="T." last="Zwitter">T. Zwitter</name><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Faculty of Mathematics and Physics, University of Ljubljana</s1><s2>Ljubljana</s2><s3>SVN</s3><sZ>22 aut.</sZ></inist:fA14><country>Slovénie</country><wicri:noRegion>Ljubljana</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">09-0378705</idno><date when="2009">2009</date><idno type="stanalyst">PASCAL 09-0378705 INIST</idno><idno type="RBID">Pascal:09-0378705</idno><idno type="wicri:Area/PascalFrancis/Corpus">002C03</idno><idno type="wicri:Area/PascalFrancis/Curation">003420</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">002902</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">002902</idno><idno type="wicri:doubleKey">0004-6361:2009:Munari U:rave:spectroscopy:of</idno><idno type="wicri:Area/Main/Merge">008871</idno><idno type="wicri:Area/Main/Curation">008137</idno><idno type="wicri:Area/Main/Exploration">008137</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">RAVE spectroscopy of luminous blue variables in the Large Magellanic Cloud</title><author><name sortKey="Munari, U" sort="Munari, U" uniqKey="Munari U" first="U." last="Munari">U. Munari</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INAF Osservatorio Astronomico di Padova</s1><s2>Asiago</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>INAF Osservatorio Astronomico di Padova</wicri:noRegion></affiliation></author><author><name sortKey="Siviero, A" sort="Siviero, A" uniqKey="Siviero A" first="A." last="Siviero">A. Siviero</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INAF Osservatorio Astronomico di Padova</s1><s2>Asiago</s2><s3>ITA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Italie</country><wicri:noRegion>INAF Osservatorio Astronomico di Padova</wicri:noRegion></affiliation><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Bienayme, O" sort="Bienayme, O" uniqKey="Bienayme O" first="O." last="Bienayme">O. Bienayme</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Observatoire de Strasbourg</s1><s2>Strasbourg</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation></author><author><name sortKey="Binney, J" sort="Binney, J" uniqKey="Binney J" first="J." last="Binney">J. Binney</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Rudolf Pierls Center for Theoretical Physics, University of Oxford</s1><s3>GBR</s3><sZ>4 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName><orgName type="university">Université d'Oxford</orgName></affiliation></author><author><name sortKey="Bland Hawthorn, J" sort="Bland Hawthorn, J" uniqKey="Bland Hawthorn J" first="J." last="Bland-Hawthorn">J. Bland-Hawthorn</name><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>Institute of Astronomy, School of Physics, University of Sydney</s1><s3>AUS</s3><sZ>5 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName><orgName type="university">Université de Sydney</orgName></affiliation></author><author><name sortKey="Campbell, R" sort="Campbell, R" uniqKey="Campbell R" first="R." last="Campbell">R. Campbell</name><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Macquarie University</s1><s2>Sydney</s2><s3>AUS</s3><sZ>6 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Freeman, K C" sort="Freeman, K C" uniqKey="Freeman K" first="K. C." last="Freeman">K. C. Freeman</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>RSAA Australian National University</s1><s2>Camberra</s2><s3>AUS</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>RSAA Australian National University</wicri:noRegion></affiliation></author><author><name sortKey="Fulbright, J P" sort="Fulbright, J P" uniqKey="Fulbright J" first="J. P." last="Fulbright">J. P. Fulbright</name><affiliation wicri:level="2"><inist:fA14 i1="08"><s1>Johns Hopkins University</s1><s2>Baltimore, Maryland</s2><s3>USA</s3><sZ>8 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Maryland</region></placeName></affiliation></author><author><name sortKey="Gibson, B K" sort="Gibson, B K" uniqKey="Gibson B" first="B. K." last="Gibson">B. K. Gibson</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Jeremiah Horrocks Institute for Astrophysics & Super-computing, University of Central Lancashire</s1><s2>Preston</s2><s3>GBR</s3><sZ>9 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Preston</wicri:noRegion></affiliation></author><author><name sortKey="Gilmore, G" sort="Gilmore, G" uniqKey="Gilmore G" first="G." last="Gilmore">G. Gilmore</name><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Institute of Astronomy, University of Cambridge</s1><s3>GBR</s3><sZ>10 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName><orgName type="university">Université de Cambridge</orgName></affiliation></author><author><name sortKey="Grebel, E K" sort="Grebel, E K" uniqKey="Grebel E" first="E. K." last="Grebel">E. K. Grebel</name><affiliation wicri:level="3"><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg</s1><s2>Heidelberg</s2><s3>DEU</s3><sZ>11 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Karlsruhe</region><settlement type="city">Heidelberg</settlement></placeName></affiliation></author><author><name sortKey="Helmil, A" sort="Helmil, A" uniqKey="Helmil A" first="A." last="Helmil">A. Helmil</name><affiliation wicri:level="4"><inist:fA14 i1="12"><s1>Kapteyn Astronomical Institute, University of Groningen</s1><s2>Groningen</s2><s3>NLD</s3><sZ>12 aut.</sZ></inist:fA14><country>Pays-Bas</country><placeName><settlement type="city">Groningue</settlement><region nuts="2" type="province">Groningue (province)</region><settlement type="city">Groningue (ville)</settlement></placeName><orgName type="university">Université de Groningue</orgName></affiliation></author><author><name sortKey="Navarre, J F" sort="Navarre, J F" uniqKey="Navarre J" first="J. F." last="Navarre">J. F. Navarre</name><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>University of Victoria</s1><s2>Victoria</s2><s3>CAN</s3><sZ>13 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>University of Victoria</wicri:noRegion></affiliation></author><author><name sortKey="Parker, Q A" sort="Parker, Q A" uniqKey="Parker Q" first="Q. A." last="Parker">Q. A. Parker</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Macquarie University</s1><s2>Sydney</s2><s3>AUS</s3><sZ>6 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Reid, W" sort="Reid, W" uniqKey="Reid W" first="W." last="Reid">W. Reid</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Macquarie University</s1><s2>Sydney</s2><s3>AUS</s3><sZ>6 aut.</sZ><sZ>14 aut.</sZ><sZ>15 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Seabroke, G M" sort="Seabroke, G M" uniqKey="Seabroke G" first="G. M." last="Seabroke">G. M. Seabroke</name><affiliation wicri:level="4"><inist:fA14 i1="10"><s1>Institute of Astronomy, University of Cambridge</s1><s3>GBR</s3><sZ>10 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><placeName><settlement type="city">Cambridge</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Angleterre de l'Est</region></placeName><orgName type="university">Université de Cambridge</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>E2v Centre for Electronic Imaging, Planetary and Space Sciences Research Institute, The Open University</s1><s2>Milton Keynes</s2><s3>GBR</s3><sZ>16 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Milton Keynes</wicri:noRegion></affiliation></author><author><name sortKey="Siebert, A" sort="Siebert, A" uniqKey="Siebert A" first="A." last="Siebert">A. Siebert</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Observatoire de Strasbourg</s1><s2>Strasbourg</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>17 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Grand Est</region><region type="old region">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Steinmetz, M" sort="Steinmetz, M" uniqKey="Steinmetz M" first="M." last="Steinmetz">M. Steinmetz</name><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation></author><author><name sortKey="Watson, F G" sort="Watson, F G" uniqKey="Watson F" first="F. G." last="Watson">F. G. Watson</name><affiliation wicri:level="3"><inist:fA14 i1="15"><s1>Anglo-Australian Observatory</s1><s2>Sydney</s2><s3>AUS</s3><sZ>19 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Williams, M" sort="Williams, M" uniqKey="Williams M" first="M." last="Williams">M. Williams</name><affiliation wicri:level="3"><inist:fA14 i1="05"><s1>Astrophysikalisches Institut Potsdam</s1><s2>Potsdam</s2><s3>DEU</s3><sZ>2 aut.</sZ><sZ>6 aut.</sZ><sZ>17 aut.</sZ><sZ>18 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="2">Brandebourg</region><settlement type="city">Potsdam</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>RSAA Australian National University</s1><s2>Camberra</s2><s3>AUS</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>RSAA Australian National University</wicri:noRegion></affiliation></author><author><name sortKey="Wyse, R F G" sort="Wyse, R F G" uniqKey="Wyse R" first="R. F. G." last="Wyse">R. F. G. Wyse</name><affiliation wicri:level="2"><inist:fA14 i1="08"><s1>Johns Hopkins University</s1><s2>Baltimore, Maryland</s2><s3>USA</s3><sZ>8 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Maryland</region></placeName></affiliation></author><author><name sortKey="Zwitter, T" sort="Zwitter, T" uniqKey="Zwitter T" first="T." last="Zwitter">T. Zwitter</name><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Faculty of Mathematics and Physics, University of Ljubljana</s1><s2>Ljubljana</s2><s3>SVN</s3><sZ>22 aut.</sZ></inist:fA14><country>Slovénie</country><wicri:noRegion>Ljubljana</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption line</term><term>B stars</term><term>Emission line</term><term>Emission line stars</term><term>Emission spectra</term><term>Galactic evolution</term><term>Galactic structure</term><term>Galaxies</term><term>Large Magellanic Cloud</term><term>Luminous blue variable star</term><term>Magellanic Clouds</term><term>Mass loss</term><term>Milky Way</term><term>Peculiar stars</term><term>Photoionization</term><term>Quiescence</term><term>Radial velocity</term><term>Spectroscopy</term><term>Stellar spectra</term><term>Stellar winds</term><term>Variability</term><term>Wolf-Rayet stars</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Spectrométrie</term><term>Etoile variable bleue lumineuse</term><term>Grand Nuage Magellan</term><term>Evolution galactique</term><term>Structure galactique</term><term>Etoile B</term><term>Spectre stellaire</term><term>Etoile particulière</term><term>Vitesse radiale</term><term>Raie émission</term><term>Raie absorption</term><term>Quiescence</term><term>Variabilité</term><term>Photoionisation</term><term>Spectre émission</term><term>Perte masse</term><term>Etoile raie émission</term><term>Vent stellaire</term><term>Etoile type Wolf Rayet</term><term>Galaxies</term><term>Nuages Magellan</term><term>Voie lactée</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Spectrométrie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Context. The RAVE spectroscopic survey for galactic structure and evolution obtains 8400-8800 Å spectra at 7500 resolving power at the UK Schmidt Telescope using the 6dF multi-fiber positioner. More than 300 000 9 < I<sub>C</sub> ≤ 12 and |b| ≥ 25° southern stars have been observed to date. Aims. This paper presents the first intrinsic examination of stellar spectra from the RAVE survey, aimed at evaluating their diagnostic potential for peculiar stars and at contributing to the general understanding of luminous blue variables (LBVs). Methods. We used the multi-epoch spectra for all seven LBVs observed, between 2005 and 2008, in the Large Magellanic Cloud (LMC) by the RAVE survey. Results. We demonstrate that RAVE spectra possess significant diagnostic potential when applied to peculiar stars and, in particular, LBVs. The behaviour of the radial velocities for both emission and absorption lines, and the spectral changes between outburst and quiescence states are described and found to agree with evidence gathered at more conventional wavelengths. The wind outflow signatures and their variability are investigated, with multi-components detected in S Doradus. Photoionisation modelling of the rich emission line spectrum of R 127 shows evidence of a massive detached ionised shell that was ejected during the 1982-2000 outburst. Surface inhomogeneities in the nuclear-processed material, brought to the surface by heavy mass loss, could have been observed in S Doradus, even if alternative explanations are possible. We also detect the transition from quiescence to outburst state in R 71. Finally, our spectrum of R 84 offers one of the clearest views of its cool companion.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>Canada</li><li>France</li><li>Italie</li><li>Pays-Bas</li><li>Royaume-Uni</li><li>Slovénie</li><li>États-Unis</li></country><region><li>Alsace (région administrative)</li><li>Angleterre</li><li>Angleterre de l'Est</li><li>Bade-Wurtemberg</li><li>Brandebourg</li><li>District de Karlsruhe</li><li>Grand Est</li><li>Groningue (province)</li><li>Maryland</li><li>Nouvelle-Galles du Sud</li><li>Oxfordshire</li></region><settlement><li>Cambridge</li><li>Groningue</li><li>Groningue (ville)</li><li>Heidelberg</li><li>Oxford</li><li>Potsdam</li><li>Strasbourg</li><li>Sydney</li></settlement><orgName><li>Université d'Oxford</li><li>Université de Cambridge</li><li>Université de Groningue</li><li>Université de Sydney</li></orgName></list><tree><country name="Italie"><noRegion><name sortKey="Munari, U" sort="Munari, U" uniqKey="Munari U" first="U." last="Munari">U. Munari</name></noRegion><name sortKey="Siviero, A" sort="Siviero, A" uniqKey="Siviero A" first="A." last="Siviero">A. Siviero</name></country><country name="Allemagne"><region name="Brandebourg"><name sortKey="Siviero, A" sort="Siviero, A" uniqKey="Siviero A" first="A." last="Siviero">A. Siviero</name></region><name sortKey="Campbell, R" sort="Campbell, R" uniqKey="Campbell R" first="R." last="Campbell">R. Campbell</name><name sortKey="Grebel, E K" sort="Grebel, E K" uniqKey="Grebel E" first="E. K." last="Grebel">E. K. Grebel</name><name sortKey="Siebert, A" sort="Siebert, A" uniqKey="Siebert A" first="A." last="Siebert">A. Siebert</name><name sortKey="Steinmetz, M" sort="Steinmetz, M" uniqKey="Steinmetz M" first="M." last="Steinmetz">M. Steinmetz</name><name sortKey="Williams, M" sort="Williams, M" uniqKey="Williams M" first="M." last="Williams">M. Williams</name></country><country name="France"><region name="Grand Est"><name sortKey="Bienayme, O" sort="Bienayme, O" uniqKey="Bienayme O" first="O." last="Bienayme">O. Bienayme</name></region><name sortKey="Siebert, A" sort="Siebert, A" uniqKey="Siebert A" first="A." last="Siebert">A. Siebert</name></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Binney, J" sort="Binney, J" uniqKey="Binney J" first="J." last="Binney">J. Binney</name></region><name sortKey="Gibson, B K" sort="Gibson, B K" uniqKey="Gibson B" first="B. K." last="Gibson">B. K. Gibson</name><name sortKey="Gilmore, G" sort="Gilmore, G" uniqKey="Gilmore G" first="G." last="Gilmore">G. Gilmore</name><name sortKey="Seabroke, G M" sort="Seabroke, G M" uniqKey="Seabroke G" first="G. M." last="Seabroke">G. M. Seabroke</name><name sortKey="Seabroke, G M" sort="Seabroke, G M" uniqKey="Seabroke G" first="G. M." last="Seabroke">G. M. Seabroke</name></country><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Bland Hawthorn, J" sort="Bland Hawthorn, J" uniqKey="Bland Hawthorn J" first="J." last="Bland-Hawthorn">J. Bland-Hawthorn</name></region><name sortKey="Campbell, R" sort="Campbell, R" uniqKey="Campbell R" first="R." last="Campbell">R. Campbell</name><name sortKey="Freeman, K C" sort="Freeman, K C" uniqKey="Freeman K" first="K. C." last="Freeman">K. C. Freeman</name><name sortKey="Parker, Q A" sort="Parker, Q A" uniqKey="Parker Q" first="Q. A." last="Parker">Q. A. Parker</name><name sortKey="Reid, W" sort="Reid, W" uniqKey="Reid W" first="W." last="Reid">W. Reid</name><name sortKey="Watson, F G" sort="Watson, F G" uniqKey="Watson F" first="F. G." last="Watson">F. G. Watson</name><name sortKey="Williams, M" sort="Williams, M" uniqKey="Williams M" first="M." last="Williams">M. Williams</name></country><country name="États-Unis"><region name="Maryland"><name sortKey="Fulbright, J P" sort="Fulbright, J P" uniqKey="Fulbright J" first="J. P." last="Fulbright">J. P. Fulbright</name></region><name sortKey="Wyse, R F G" sort="Wyse, R F G" uniqKey="Wyse R" first="R. F. G." last="Wyse">R. F. G. Wyse</name></country><country name="Pays-Bas"><region name="Groningue (province)"><name sortKey="Helmil, A" sort="Helmil, A" uniqKey="Helmil A" first="A." last="Helmil">A. Helmil</name></region></country><country name="Canada"><noRegion><name sortKey="Navarre, J F" sort="Navarre, J F" uniqKey="Navarre J" first="J. F." last="Navarre">J. F. Navarre</name></noRegion></country><country name="Slovénie"><noRegion><name sortKey="Zwitter, T" sort="Zwitter, T" uniqKey="Zwitter T" first="T." last="Zwitter">T. Zwitter</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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