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Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars
Mathias, P; Le Contell, JM; Chapellier, E; Jankov, S; Sareyan, JP; Poretti, E; Garrido, R; Rodriguez, E; Ferro, AA; Alvarez, M; Parrao, L; Pena, J; Eyer, L; Aerts, C; De Cat, P; Weiss, WW; Zhou, A
2004-04-01
Source PublicationASTRONOMY & ASTROPHYSICS
Volume417Issue:1Pages:189-199
AbstractWe present the first results of a 2-year high-resolution spectroscopy campaign of 59 candidate gamma Doradus stars which were mainly discovered from the HIPPARCOS astrometric mission. More than 60% of the stars present line profile variations which can be interpreted as due to pulsation related to gamma Doradus stars. For all stars we also derived the projected rotation velocity (up to more than 200 km s(-1)). The amplitude ratios 2K/Deltam for the main HIPPARCOS frequency are in the range 35-96 km s(-1) mag(-1). About 50% of the candidates are possible members of binary systems, with 20 stars being confirmed gamma Doradus. At least 6 stars present composite spectra, and in all but one case (for which only one spectrum could be obtained), the narrow component shows line profile variations, pointing towards an uncomfortable situation if this narrow component originates from a shell surrounding the star. This paper is the first of a series concerning mode identification using both photometric and spectroscopic methods for the confirmed gamma Doradus stars of the present sample.
KeywordLine : Profiles Stars : Variables : General Stars : Oscillations Stars : Binaries : Spectroscopic
DOI10.1051/0004-6361:20034503
Indexed BySCI
Language英语
WOS IDWOS:000220976100024
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8989
Collection射电天文研究部
Affiliation1.Observ Cote Azur, Dept Fresnel, UMR 6528, F-06304 Nice 4, France
2.Osserv Astron Brera, I-23807 Merate, Italy
3.Inst Astrofis Andalucia, E-18080 Granada, Spain
4.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico
5.Univ Nacl Autonoma Mexico, IA, Observ Astron Nacl, Ensenada 22800, Baja California, Mexico
6.Princeton Univ Observ, Princeton, NJ 08544 USA
7.Katholieke Univ Leuven, Dept Natuurkunde & Sterrenkunde, B-3001 Louvain, Belgium
8.Univ Vienna, Inst Astron, A-1180 Vienna, Austria
9.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Mathias, P,Le Contell, JM,Chapellier, E,et al. Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars[J]. ASTRONOMY & ASTROPHYSICS,2004,417(1):189-199.
APA Mathias, P.,Le Contell, JM.,Chapellier, E.,Jankov, S.,Sareyan, JP.,...&Zhou, A.(2004).Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars.ASTRONOMY & ASTROPHYSICS,417(1),189-199.
MLA Mathias, P,et al."Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars".ASTRONOMY & ASTROPHYSICS 417.1(2004):189-199.
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