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 | |
刊名 | ASTRONOMICAL JOURNAL |
2018 | |
卷号 | 155期号:1 |
关键词 | Galaxies: Photometry Infrared: Galaxies |
ISSN号 | 0004-6256 |
DOI | 10.3847/1538-3881/aa988c |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 空间天文学 ; 红外天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | NNSFC[11373067] ; NNSFC[11303086] |
WOS关键词 | COMPACT DWARF GALAXIES ; DIGITAL SKY SURVEY ; MASSIVE STAR POPULATIONS ; ISO OBSERVATIONS ; STELLAR CENSUS ; HII GALAXIES ; EMISSION ; CATALOG ; SAMPLE ; SPECTROSCOPY |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000418034700004 |
资助机构 | NNSFC[11373067, 11303086] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/12089] |
专题 | 云南天文台_其他 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Chen PS(陈培生) |
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.(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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