Carbon stars in the X-Shooter Spectral Library
Entidad
UAM. Departamento de Física TeóricaEditor
EDP SciencesFecha de edición
2015-12-20Cita
10.1051/0004-6361/201526292
Astronomy and Astrophysics 589 (2015): A36
ISSN
1432-0746 (online); 0004-6361 (print)DOI
10.1051/0004-6361/201526292Financiado por
B.A. acknowledges the support from the project STARKEY funded by the ERC Consolidator Grant, G.A. n. 615604. A.V. acknowledge support from grant AYA2013-48226-C3-1-P from the Spanish Ministry of Economy and Competitiveness (MINECO)Proyecto
Gobierno de España. AYA2013-48226-C3-1-P; info:eu-repo/grantAgreement/EC/FP7/615604Versión del editor
http://dx.doi.org/10.1051/0004-6361/201526292Materias
Infrared: stars; Stars: AGB and post-AGB; Stars: carbon; Ultraviolet: stars; FísicaNota
Astronomy and Astrophysics 589 (2015): A36 reproduced with permission from Astronomy & AstrophysicsDerechos
© ESO 2016Resumen
We provide a new collection of spectra of 35 carbon stars obtained with the ESO/VLT X-Shooter instrument as part of the X-Shooter Spectral Library project. The spectra extend from 0.3 μm to 2.4 μm with a resolving power above ~8000. The sample contains stars with a broad range of (J - K) color and pulsation properties located in the Milky Way and the Magellanic Clouds. We show that the distribution of spectral properties of carbon stars at a given (J - K) color becomes bimodal (in our sample) when (J - K) is larger than about 1.5. We describe the two families of spectra that emerge, characterized by the presence or absence of the absorption feature at 1.53 μm, generally associated with HCN and C2H2. This feature appears essentially only in large-amplitude variables, though not in all observations. Associated spectral signatures that we interpret as the result of veiling by circumstellar matter, indicate that the 1.53 μm feature might point to episodes of dust production in carbon-rich Miras
Lista de ficheros
Google Scholar:Gonneau, A.
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Lançon, A.
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Trager, S.C.
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Aringer, B.
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Lyubenova, M.
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Nowotny, Walter
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Peletier, R.F.
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Prugniel, P.
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Chen, Y.-P.
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Dries, M.
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Choudhury, O.S.
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Falcón-Barroso, J.
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Koleva, M.
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Meneses-Goytia, S.
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Sánchez-Blázquez, Patricia
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Vazdekis, A.
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