On the Transition of the Galaxy Quenching Mode at 0.5 < z < 1 in CANDELS
Liu, F. S.1,2,3; Jia, Meng1; Yesuf, Hassen M.2,3; Faber, S. M.2,3; Koo, David C.2,3; Guo, Yicheng4; Bell, Eric F.5; Jiang, Dongfei1; Wang, Weichen6; Koekemoer, Anton M.7; Zheng, Xianzhong8; Fang, Jerome J.9; Barro, Guillermo10; Perez-Gonzalez, Pablo G.11; Dekel, Avishai12; Kocevski, Dale13; Hathi, Nimish P.7; Croton, Darren14; Huertas-Company, M.15; Meng, Xianmin16; Tong, Wei1; Liu, Lu1
Corresponding AuthorLiu, F. S.(
AbstractWe investigate the galaxy quenching process at intermediate redshift using a sample of similar to 4400 galaxies with M-* >10(9) M-circle dot between redshift 0.5 and 1.0 in all five CANDELS fields. We divide this sample, using the integrated specific star formation rate (sSFR), into four subgroups: star-forming galaxies (SFGs) above and below the ridge of the star-forming main sequence (SFMS), transition galaxies and quiescent galaxies. We study their UVI (U -V versus V-I) color gradients to infer their sSFR gradients out to twice effective radii. We show that on average both star-forming and transition galaxies at all masses are not fully quenched at any radii, whereas quiescent galaxies are fully quenched at all radii. We find that at low masses (M-* = 10(9) - 10(10) M-circle dot) SFGs both above and below the SFMS ridge generally have flat sSFR profiles, whereas the transition galaxies at the same masses generally have sSFRs that are more suppressed in their outskirts. In contrast, at high masses (M-* > 10(10.5) M-circle dot), SFGs above and below the SFMS ridge and transition galaxies generally have varying degrees of more centrally suppressed sSFRs relative to their outskirts. These findings indicate that at z similar to 0.5-1.0 the main galaxy quenching mode depends on its already formed stellar mass, exhibiting a transition from "the outside-in" at M*<= 10(10) M-circle dot to "the inside-out" at M-* > 10(10.5) M-circle dot. In other words, our findings support that internal processes dominate the quenching of massive galaxies, whereas external processes dominate the quenching of low-mass galaxies.
Keywordgalaxies: high-redshift galaxies: photometry galaxies: star formation
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000435102000010
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLiu, F. S.
Affiliation1.Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Liaoning, Peoples R China
2.Univ Calif Santa Cruz, Univ Calif Observ, Santa Cruz, CA 95064 USA
3.Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
4.Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA
5.Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
6.Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA
7.Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
8.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
9.Orange Coast Coll, Dept Astron, Costa Mesa, CA 92626 USA
10.Univ Pacific, Dept Phys, 3601 Pacific Ave, Stockton, CA 95211 USA
11.Univ Complutense Madrid, Fac CC Fis, Dept Astrofis, E-28040 Madrid, Spain
12.Hebrew Univ Jerusalem, Ctr Astrophys & Planetary Sci, Racah Inst Phys, Jerusalem, Israel
13.Colby Coll, Dept Phys & Astron, Mayflower Hill Dr, Waterville, ME USA
14.Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia
15.Univ Paris Diderot, Univ PSL, Observ Paris, Sorbonne Univ,CNRS,LERMA, Paris, France
16.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Liu, F. S.,Jia, Meng,Yesuf, Hassen M.,et al. On the Transition of the Galaxy Quenching Mode at 0.5 < z < 1 in CANDELS[J]. ASTROPHYSICAL JOURNAL,2018,860(1):16.
APA Liu, F. S..,Jia, Meng.,Yesuf, Hassen M..,Faber, S. M..,Koo, David C..,...&Liu, Lu.(2018).On the Transition of the Galaxy Quenching Mode at 0.5 < z < 1 in CANDELS.ASTROPHYSICAL JOURNAL,860(1),16.
MLA Liu, F. S.,et al."On the Transition of the Galaxy Quenching Mode at 0.5 < z < 1 in CANDELS".ASTROPHYSICAL JOURNAL 860.1(2018):16.
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