Reference : Abundance analysis of targets for the COROT/MONS asteroseismology missions. II. Abundanc...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/27341
Abundance analysis of targets for the COROT/MONS asteroseismology missions. II. Abundance analysis of the COROT main targets
English
Bruntt, H. mailto [Department of Physics and Astronomy, Aarhus University, Bygn. 520, 8000 Aarhus C, Denmark]
Bikmaev, I. F. [Department of Astronomy, Kazan State University, Kremlevskaya 18, 420008 Kazan, Russia]
Catala, C. [Observatoire de Paris, LESIA, France]
Solano, E. [Laboratorio de Astrofísica Espacial y Física Fundamental, PO Box 50727, 28080 Madrid, Spain]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Magain, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Van't Veer-Menneret, C. [Observatoire de Paris, GEPI, France]
Stütz, C. [Institut für Astronomie, Universität Wien, Türkenschanzstrasse 17, 1180 Wien, Austria]
Weiss, W. W. [Institut für Astronomie, Universität Wien, Türkenschanzstrasse 17, 1180 Wien, Austria]
Ballereau, D. [Observatoire de Paris, GEPI, France]
Bouret, J. C. [Laboratoire d'Astrophysique de Marseille, France]
Charpinet, S. [Laboratoire d'Astrophysique de l'OMP, CNRS UMR 5572, Observatoire Midi-Pyrénées, 14, avenue Edouard Belin, 31400 Toulouse, France]
Hua, T. [Laboratoire d'Astrophysique de Marseille, France]
Katz, D. [Observatoire de Paris, GEPI, France]
Lignières, F. [Laboratoire d'Astrophysique de l'OMP, CNRS UMR 5572, Observatoire Midi-Pyrénées, 14, avenue Edouard Belin, 31400 Toulouse, France]
Lueftinger, T. [Institut für Astronomie, Universität Wien, Türkenschanzstrasse 17, 1180 Wien, Austria]
1-Oct-2004
Astronomy and Astrophysics
EDP Sciences
425
683-695
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: abundances ; stars: fundamental parameters
[en] One of the goals of the ground-based support program for the COROT and MONS/RÖMER satellite missions is to characterize suitable target stars for the part of the missions dedicated to asteroseismology. We present the detailed abundance analysis of nine of the potential COROT main targets using the semi-automatic software VWA. For two additional COROT targets we could not perform the analysis due to the high rotational velocity of these stars. For five stars with low rotational velocity we have also performed abundance analysis by a classical equivalent width method in order to test the reliability of the VWA software. The agreement between the different methods is good. We find that it is necessary to measure abundances extracted from each line relative to the abundances found from a spectrum of the Sun in order to remove systematic errors. We have constrained the global atmospheric parameters T[SUB]eff[/SUB], log g, and [Fe/H] to within 70-100 K, 0.1-0.2 dex, and 0.1 dex for five stars which are slow rotators (v sin i < 15 km s[SUP]-1[/SUP]). For most of the stars we find good agreement with the parameters found from line depth ratios, H alpha lines, Strömgren indices, previous spectroscopic studies, and also log g determined from the HIPPARCOS parallaxes. For the fast rotators (v sin i > 60 km s[SUP]-1[/SUP]) it is not possible to constrain the atmospheric parameters. Based on observations obtained with the 193 cm telescope at Observatoire de Haute Provence, France.
http://hdl.handle.net/2268/27341
10.1051/0004-6361:20040464
http://adsabs.harvard.edu/abs/2004A%26A...425..683B
The authors thank EDP Sciences for their deposit authorization
http://de.arxiv.org/abs/astro-ph/0403464

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