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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
Source PublicationASTRONOMICAL JOURNAL
2018
Volume155Issue:1
DOI10.3847/1538-3881/aa988c
Contribution Rank第1完成单位
Indexed BySCI
KeywordGalaxies: Photometry Infrared: Galaxies
Abstract

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.

Funding ProjectNNSFC[11373067] ; NNSFC[11303086]
Funding OrganizationNNSFC[11373067, 11303086]
Language英语
Subject Area天文学 ; 空间天文学 ; 红外天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000418034700004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCOMPACT DWARF GALAXIES ; DIGITAL SKY SURVEY ; MASSIVE STAR POPULATIONS ; ISO OBSERVATIONS ; STELLAR CENSUS ; HII GALAXIES ; EMISSION ; CATALOG ; SAMPLE ; SPECTROSCOPY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12089
Collection其他
中国科学院天体结构与演化重点实验室
Corresponding AuthorChen PS(陈培生)
Affiliation1.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
Recommended Citation
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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