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THE SPATIALLY RESOLVED NUV-r COLOR OF LOCAL STAR-FORMING GALAXIES AND CLUES FOR QUENCHING
Pan, Zhizheng1; Zheng, Xianzhong1; Lin, Weipeng2,3; Li, Jinrong4; Wang, Jing5; Fan, Lulu6; Kong, Xu4
2016-03-10
Source PublicationASTROPHYSICAL JOURNAL
Volume819Issue:2
AbstractUsing 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.
KeywordGalaxies: Evolution Galaxies: Star Formation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/0004-637X/819/2/91
WOS KeywordDIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLES ; SIMILAR-TO 0.7 ; STELLAR POPULATION PROPERTIES ; INSIDE-OUT FORMATION ; UV-OPTICAL COLORS ; MAIN-SEQUENCE ; FORMATION HISTORIES ; ELLIPTIC GALAXIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000372305700003
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16171
Collection空间目标与碎片观测研究基地
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Guangdong, Peoples R China
3.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
5.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia
6.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Inst Space Sci, Weihai 264209, Peoples R China
Recommended Citation
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).
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