A new infrared photometric study of hydrogen-deficient carbon stars, R CrB stars and extreme helium stars in our galaxy | |
Chen PS(陈培生)2,3; Liu JY(刘杰英)1,2,3; Dan HG(单红光)1,2,3 | |
刊名 | NEW ASTRONOMY |
2021-11 | |
卷号 | 89 |
关键词 | Stars Carbon Stars-evolution Infrared stars |
ISSN号 | 1384-1076 |
DOI | 10.1016/j.newast.2021.101633 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We have collected almost all HdC, RCB and EHe stars up to date to investigate their infrared properties, in particular, their radiation mechanisms in the infrared, using the observational data from 2MASS, WISE and IRAS missions. Because HdC stars, RCB stars and EHe stars all belong to the category of extremely hydrogen deficient stars and they definitely have some evolutionary connections. It is found from this paper that all RCB stars have infrared excesse in the wavelength region from the near infrared to the far infrared covered by 2MASS, WISE and IRAS due to dust while almost all HdC stars and EHe stars have no or little infrared excess. From 2MASS, WISE and IRAS two-color diagrams, it is also found that the majority of these three kinds of stars are around the power law distributions in the near infrared possibly indicative of their infrared radiations from the warm dust in the disk-like envelope. It is also found that in the mid-and far infrared regions some stars are around the power law distribution perhaps due to dust from disk-like envelope while some stars are around the blackbody distribution maybe due to the cold and extended nebulosity nearby. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS |
资助项目 | National Nature Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC)[11873086] ; National Nature Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC)[11373067] ; National Nature Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC)[11303086] |
WOS关键词 | CORONAE-BOREALIS STARS ; EFFECTIVE TEMPERATURES ; SPECTRAL-ANALYSIS ; DISCOVERY ; GALEX |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000687336000008 |
资助机构 | National Nature Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC)[11873086, 11373067, 11303086] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24548] |
专题 | 云南天文台_恒星物理研究组 |
通讯作者 | Chen PS(陈培生) |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China 2.The Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China; 3.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, China; |
推荐引用方式 GB/T 7714 | Chen PS,Liu JY,Dan HG. A new infrared photometric study of hydrogen-deficient carbon stars, R CrB stars and extreme helium stars in our galaxy[J]. NEW ASTRONOMY,2021,89. |
APA | Chen PS,Liu JY,&Dan HG.(2021).A new infrared photometric study of hydrogen-deficient carbon stars, R CrB stars and extreme helium stars in our galaxy.NEW ASTRONOMY,89. |
MLA | Chen PS,et al."A new infrared photometric study of hydrogen-deficient carbon stars, R CrB stars and extreme helium stars in our galaxy".NEW ASTRONOMY 89(2021). |
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