2MASS observations of Be stars

doi:10.1016/j.newast.2004.12.002

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	2MASS observations of Be stars
	Zhang P(张品)1,2 ; Chen PS(陈培生)1 ; Yang, HT 2
发表期刊	NEW ASTRONOMY
	2005-03
卷号	10 期号:4 页码:325-352
DOI	10.1016/j.newast.2004.12.002
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Stars : Emission-line Be Infrared : Stars
摘要	A catalogue of almost all known Galactic Be stars in the 2MASS database (1185 in total) and in the MSX database (225 in total) is presented in this paper. From the color-color diagrams and spectral indexes, it is found that the IR excesses for many samples are due to free-free and free-bound emission from the ionized material around a Be star as suggested previously and that the mean spectral index derived for the samples is 1.50 +/- 0.34 between J to K bands and 1.14 +/- 0.42 between K to A bands, respectively. However, it is also found that there are eight Be stars that have large near infrared excess emission with spectral index values outside the range expected for free-free and free-bound emission. This is likely attributed to circumstellar dust emission. (C) 2005 Elsevier B.V. All rights reserved.
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星天文学
文章类型	Article
出版者	ELSEVIER SCIENCE BV
出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN	1384-1076
URL	查看原文
归档日期	2005-04-08
WOS记录号	WOS:000228183400007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	B-type Stars ; Infrared Photometry ; Intrinsic Colors ; Interstellar Extinction ; Energy-distributions ; Absolute Calibration ; Geneva Photometry ; Iras Observations ; Emission ; Excess
EI入藏号	2005108868648
EI主题词	Astronomy
EI分类号	802.2chemical Reactions - 741.1light/optics - 723.3database Systems - 922.2mathematical Statistics - 657.2extraterrestrial Physics And Stellar Phenomena - 549nonferrous Metals And Alloys - 542.1beryllium And Alloys - 641.2heat Transfer
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4190
专题	其他
通讯作者	Zhang P(张品)
作者单位	1.National Astronomical Observatories/Yunnan Observatory and Graduate School, Chinese Academy of Sciences, Kunming 650011, PR China 2.Cosmic Ray Institute, Yunnan University, Kunming 650091, PR China
第一作者单位	中国科学院云南天文台
通讯作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Zhang P,Chen PS,Yang, HT. 2MASS observations of Be stars[J]. NEW ASTRONOMY,2005,10(4):325-352.
APA	Zhang P,Chen PS,&Yang, HT.(2005).2MASS observations of Be stars.NEW ASTRONOMY,10(4),325-352.
MLA	Zhang P,et al."2MASS observations of Be stars".NEW ASTRONOMY 10.4(2005):325-352.

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