PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Spectral classification of the cool components of symbiotic stars
Zhu, ZX; Friedjung, M; Huang, CC
1999-04-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
ISSN0275-1062
Volume23Issue:2Pages:195-207
AbstractWe have made near infrared spectroscopic observations of 10 symbiotic and 27 K-M comparison stars. For stars later than M3, we found the band depth of the triple-headed TiO absorption band to be sensitive to temperature and insensitive to gravity. We fitted the spectral type to the band depth with a standard error of 0.22 of a subtype and derived the spectral types for 6 symbiotic stars. We measured the EW of a large number of lines including the Ca II lines (very sensitive to luminosity), the Fe I and TiO lines (moderately sensitive) and the Na I lines (not sensitive). The EW of these lines vary with the spectral type, particularly for stars later than M3, both spectral type and luminosity effects must be considered. We give the luminosity classes for 10 of the brighter symbiotic stars, they are all giant stars, showing no features of bright giants or supergiants.
KeywordSymbiotic Star Near Infrared Spectrum Spectral Classification
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000083010900010
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8320
Collection宇宙伽马暴、中子星及相关物理研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Inst Astrophys, F-75014 Paris, France
Recommended Citation
GB/T 7714
Zhu, ZX,Friedjung, M,Huang, CC. Spectral classification of the cool components of symbiotic stars[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,1999,23(2):195-207.
APA Zhu, ZX,Friedjung, M,&Huang, CC.(1999).Spectral classification of the cool components of symbiotic stars.CHINESE ASTRONOMY AND ASTROPHYSICS,23(2),195-207.
MLA Zhu, ZX,et al."Spectral classification of the cool components of symbiotic stars".CHINESE ASTRONOMY AND ASTROPHYSICS 23.2(1999):195-207.
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