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Infrared Photometric Study of Wolf-Rayet Galaxies
Chen PS(陈培生)1; Yang, X. H.2; Liu JY(刘杰英)1; Dan HG(单红光)1; Chen, P. S.(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
发表期刊ASTRONOMICAL JOURNAL
2018
卷号155期号:1
DOI10.3847/1538-3881/aa988c
产权排序第1完成单位
收录类别SCI
关键词Galaxies: Photometry Infrared: Galaxies
摘要We collected observational data on 781 Wolf-Rayet (WR) galaxies from the literature to photometrically study their infrared properties measured by the 2MASS, WISE, IRAS, AKARI, and Herschel missions. It is found that in the 1-5 mu m range the radiations of WR galaxies are dominated by the free-free emissions from the stellar winds and the circumstellar dust from the late-type stars in the host galaxy. In the 5-22 mu m range, the radiation of WR galaxies is dominated by the free-free emissions and the synchrotron radiation from the central active galactic nucleus (AGN; but not always present). In the 22-140 mu m range, the radiations of WR galaxies are dominated by the free-free emissions and the star formation/starburst activities. In the 250-500 mu m range, the radiation of WR galaxies is dominated by the free-free emissions. In addition, the comparison with the non-WR galaxies is made. It is shown that some star formation WR galaxies have redder near-infrared colors than non-WR star-forming galaxies probably due to the gas emission in the near-infrared. In the 2-5 mu m region WR galaxies have redder colors due to the thermal emission from circumstellar dust of late-type stars and the enhanced gas emission. In the 5-22 mu m region, both WR galaxies and non-WR galaxies have similar behavior, indicative of having similar free-free emission as the dominant radiation. In the 25-140 mu m region, both types of galaxies also have similar behavior, indicative of having free-free emission from the stellar winds or the thermal radiation from the starburst/star formation as the dominant radiation.
项目资助者NNSFC(11373067, 11303086)
语种英语
学科领域天文学
文章类型Article
ISSN0004-6256
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WOS记录号WOS:000418034700004
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]COMPACT DWARF GALAXIES ; DIGITAL SKY SURVEY ; MASSIVE STAR POPULATIONS ; ISO OBSERVATIONS ; STELLAR CENSUS ; HII GALAXIES ; EMISSION ; CATALOG ; SAMPLE ; SPECTROSCOPY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12089
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, P. S.(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China)
作者单位1.Yunnan Observatories and Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
2.Department of Physics, Chongqing University, Chongqing 400044, China
推荐引用方式
GB/T 7714
Chen PS,Yang, X. H.,Liu JY,et al. Infrared Photometric Study of Wolf-Rayet Galaxies[J]. ASTRONOMICAL JOURNAL,2018,155(1).
APA Chen PS,Yang, X. H.,Liu JY,Dan HG,&Chen, P. S..(2018).Infrared Photometric Study of Wolf-Rayet Galaxies.ASTRONOMICAL JOURNAL,155(1).
MLA Chen PS,et al."Infrared Photometric Study of Wolf-Rayet Galaxies".ASTRONOMICAL JOURNAL 155.1(2018).
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