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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)1,2; Liu JY(刘杰英)1,2,3; Dan HG(单红光)1,2,3
发表期刊NEW ASTRONOMY
2021-11
卷号89
DOI10.1016/j.newast.2021.101633
产权排序第1完成单位
收录类别SCI
关键词Stars Carbon Stars-evolution Infrared stars
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.

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]
项目资助者National Nature Science Foundation of China (NNSFC)National Natural Science Foundation of China (NSFC)[11873086, 11373067, 11303086]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者ELSEVIER
出版地RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
WOS记录号WOS:000687336000008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAE-BOREALIS STARS ; EFFECTIVE TEMPERATURES ; SPECTRAL-ANALYSIS ; DISCOVERY ; GALEX
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/24548
专题其他
恒星物理研究组
中国科学院天体结构与演化重点实验室
党委办公室
通讯作者Chen PS(陈培生)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, China;
2.The Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China;
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, 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
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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