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A new approach to the infrared photometric study of Be stars
Chen PS(陈培生); Liu JY(刘杰英); Dan HG(单红光); Chen, PS (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2016-12-01
卷号463期号:2页码:1162-1172
DOI10.1093/mnras/stw1757
产权排序第1完成单位
收录类别SCI
关键词Infrared: Stars Stars: Be Star
摘要In this paper, we have collected data for almost all Be stars known so far (1991 sources in total) and photometrically study their infrared properties. 2MASS, WISE, IRAS and Akari data are analysed. It is shown from several two-colour diagrams that from 1 to 60 mu m, infrared excesses for the majority of Be stars are mainly due to the free-free emission or the bound-free emission from proton-electron scattering, while for only a small number of Be stars their infrared excess originates from dust thermal radiation or is caused by the nebulosity/binarity effects. However, in the wavelength range 3.4-12 mu m (the WISE W1, W2 and W3 bands), some Be stars show the properties of dust thermal radiation, which is probably due to silicate dust emission and/or polycyclic aromatic hydrocarbon emission. In addition, it is found in this paper that infrared colour excesses indeed increase with wavelength for Be stars. However, no correlations between infrared colours and spectral type can be found for Be stars. Furthermore, several stars have very large infrared excesses in the near-infrared. The reasons for such infrared excesses are given in more detail.
项目资助者National Nature Science Foundation of China (NNSFC)(11373067, 11303086)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
归档日期2016-12-19
WOS记录号WOS:000388122400004
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GALACTIC FSCMA STARS ; EMISSION-LINE STARS ; CIRCUMSTELLAR ENVIRONMENT ; IRAS OBSERVATIONS ; BE-STARS ; SPECTRA ; CATALOG ; EXCESS ; DISKS ; SAGITTARII
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被引频次:1[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/114a53/9773
专题其他
中国科学院天体结构与演化重点实验室
通讯作者Chen, PS (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
作者单位Yunnan Observatories and Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
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Chen PS,Liu JY,Dan HG,et al. A new approach to the infrared photometric study of Be stars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,463(2):1162-1172.
APA Chen PS,Liu JY,Dan HG,&Chen, PS .(2016).A new approach to the infrared photometric study of Be stars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,463(2),1162-1172.
MLA Chen PS,et al."A new approach to the infrared photometric study of Be stars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 463.2(2016):1162-1172.
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