Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars
文献类型：期刊论文
| 作者 | Aerts, C; Alvarez, M; Ferro, AA; Rodriguez, E; Zhou, A; Garrido, R; Poretti, E; Sareyan, JP; Jankov, S; Chapellier, E |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 417期号:1页码:189-199 |
| 关键词 | Line : Profiles Stars : Variables : General Stars : Oscillations Stars : Binaries : Spectroscopic |
| DOI | 10.1051/0004-6361:20034503 |
| 英文摘要 | We 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000220976100024 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8989]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Nacl Autonoma Mexico, IA, Observ Astron Nacl, Ensenada 22800, Baja California, Mexico 3.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico 4.Inst Astrofis Andalucia, E-18080 Granada, Spain 5.Osserv Astron Brera, I-23807 Merate, Italy 6.Observ Cote Azur, Dept Fresnel, UMR 6528, F-06304 Nice 4, France 7.Univ Vienna, Inst Astron, A-1180 Vienna, Austria 8.Katholieke Univ Leuven, Dept Natuurkunde & Sterrenkunde, B-3001 Louvain, Belgium 9.Princeton Univ Observ, Princeton, NJ 08544 USA |
| 推荐引用方式 GB/T 7714 | Aerts, C,Alvarez, M,Ferro, AA,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 | Aerts, C.,Alvarez, M.,Ferro, AA.,Rodriguez, E.,Zhou, A.,...&Parrao, L.(2004).Multi-site, multi-technique survey of gamma Doradus candidates - I. Spectroscopic results for 59 stars.ASTRONOMY & ASTROPHYSICS,417(1),189-199. |
| MLA | Aerts, C,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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来源：国家天文台
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