THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING

doi:10.3847/0004-637X/819/2/91

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	THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING
	Pan, Zhizheng 2; Zheng, Xianzhong 2; Lin, Weipeng 3,4; Li, Jinrong 5; Wang, Jing 1; Fan, Lulu 6; Kong, Xu 5
刊名	ASTROPHYSICAL JOURNAL
	2016-03-10
卷号	819 期号:2
关键词	Galaxies: Evolution Galaxies: Star Formation
ISSN号	0004-637X
DOI	10.3847/0004-637X/819/2/91
英文摘要	Using a sample of similar to 6000 local face-on star-forming galaxies (SFGs) we examine the correlations between the NUV-r colors both inside and outside the half-light radius, stellar mass M-, and Sersic index n to understand how the quenching of star formation is linked to galaxy structure. For these less dust-attenuated galaxies, NUV-r is found to be linearly correlated with D-n 4000, supporting NUV-r as a good photometric indicator of stellar age (or specific star formation rate). First, we find that at M- < 10(10.2)M(circle dot) the central NUV-r is on average only 0.25 mag redder than the outer NUV-r; the intrinsic value would be even smaller after accounting for dust correction. However, the central NUV-r becomes systematically much redder than the outer NUV-r for more massive galaxies at M* > 10(10.2)M(circle dot). Second, the central NUV-r shows no dependence on Sersic index n at M* < 10(10.2)M(circle dot), while above this mass galaxies with a higher n tend to be redder in the central NUV-r color. These results suggest that galaxies with M* < 101 2M(circle dot) exhibit similar star formation activity from the inner R < R-50 region to the R > R-50 region. In contrast, a considerable fraction of the M* > 101(0.2)M(circle dot) galaxies, especially those with a high n, have harbored a relatively inactive bulge component.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000372305700003
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32837]
专题	中国科学院上海天文台
通讯作者	Pan, Zhizheng; Zheng, Xianzhong; Lin, Weipeng
作者单位	1.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia 2.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 3.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Guangdong, Peoples R China 4.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 6.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Inst Space Sci, Weihai 264209, Peoples R China
推荐引用方式 GB/T 7714	Pan, Zhizheng,Zheng, Xianzhong,Lin, Weipeng,et al. THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING[J]. ASTROPHYSICAL JOURNAL,2016,819(2).
APA	Pan, Zhizheng.,Zheng, Xianzhong.,Lin, Weipeng.,Li, Jinrong.,Wang, Jing.,...&Kong, Xu.(2016).THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING.ASTROPHYSICAL JOURNAL,819(2).
MLA	Pan, Zhizheng,et al."THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING".ASTROPHYSICAL JOURNAL 819.2(2016).