Infrared properties of barium stars

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	Infrared properties of barium stars
	Chen PS(陈培生)
刊名	ASTRONOMY & ASTROPHYSICS
	2001-06
卷号	372 期号:1 页码:245-248
关键词	stars : late-type infrared : stars stars : chemically peculiar
ISSN号	0004-6361
通讯作者	Chen, PS (reprint author), CAS, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	We present the results of a systematic survey for IRAS associations of barium stars. A total of 155 associations were detected, and IRAS low-resolution spectra exist for 50 barium stars. We use different color-color diagrams from the visual band to 60 mum, relations between these colors and the spectral type, the barium intensity, and the IRAS low-resolution spectra to discuss physical properties of barium stars in the infrared. It is confirmed that most barium stars have infrared excesses in the near infrared. However, a new result of this work is that most barium stars have no excesses in the far infrared. This fact may imply that infrared excesses of barium stars are mainly due to the re-emission of energy lost from the Bond-Neff depression. It is also shown that the spectral type and the barium intensity of barium stars are not correlated with infrared colors, but may be correlated with V-K color.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CLASSIFICATION ; PHOTOMETRY ; PASSBANDS ; EXCESSES
收录类别	SCI ; EI
原文出处	http://www.aanda.org/articles/aa/abs/2001/22/aa1934/aa1934.html
语种	英语
WOS记录号	WOS:000169962300030
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4125]
专题	云南天文台_其他
作者单位	Yunnan Observatory & United Laboratory of Optical Astronomy, CAS, Kunming 650011, PR China
推荐引用方式 GB/T 7714	Chen PS. Infrared properties of barium stars[J]. ASTRONOMY & ASTROPHYSICS,2001,372(1):245-248.
APA	Chen PS.(2001).Infrared properties of barium stars.ASTRONOMY & ASTROPHYSICS,372(1),245-248.
MLA	Chen PS."Infrared properties of barium stars".ASTRONOMY & ASTROPHYSICS 372.1(2001):245-248.