Structural and Star-forming Relations since z ∼ 3: Connecting Compact Star-forming and Quiescent Galaxies

被引：210

作者：

Barro, Guillermo ^{[1
,2
]}

Faber, S. M. ^{[1
]}

Koo, David C. ^{[1
]}

Dekel, Avishai ^{[3
]}

Fang, Jerome J. ^{[1
]}

Trump, Jonathan R. ^{[4
]}

Perez-Gonzalez, Pablo G. ^{[5
]}

Pacifici, Camilla ^{[6
]}

Primack, Joel R. ^{[7
]}

Somerville, Rachel S. ^{[8
]}

Yan, Haojing ^{[9
]}

Guo, Yicheng ^{[1
]}

Liu, Fengshan ^{[10
]}

Ceverino, Daniel ^{[11
]}

Kocevski, Dale D. ^{[12
]}

McGrath, Elizabeth ^{[12
]}

机构：

[1] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[2] Univ Calif Berkeley, Berkeley, CA 94720 USA

[3] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[4] Univ Connecticut, Storrs, CT 06269 USA

[5] Univ Complutense Madrid, F CC Fis, E-28040 Madrid, Spain

[6] Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[7] Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[8] Rutgers State Univ, New Brunswick, NJ 08901 USA

[9] Univ Missouri, Columbia, MO 65211 USA

[10] Shenyang Normal Univ, Coll Phys Sci & Technol, Shenyang 110034, Peoples R China

[11] CSIC INTA, Ctr Astrobiol, Madrid 28850, Spain

[12] Colby Coll, Waterville, ME 04901 USA

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 840卷 / 01期

基金：

美国国家科学基金会;

关键词：

galaxies: evolution; galaxies: formation; galaxies: high-redshift; galaxies: structure; INSIDE-OUT GROWTH; STELLAR MASS FUNCTIONS; HIGH-REDSHIFT GALAXIES; PHASE-3 BILLION YEARS; LYMAN BREAK GALAXIES; H-ALPHA MAPS; LESS-THAN; MAIN-SEQUENCE; FORMATION HISTORIES; MORPHOLOGICAL EVOLUTION;

D O I：

10.3847/1538-4357/aa6b05

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the evolution of the scaling relations that compare the effective density (Sigma(e), r < r(e)) and core density (Sigma(1), r < 1kpc) to the stellar masses of star-forming galaxies (SFGs) and quiescent galaxies. These relations have been fully in place since z similar to 3 and have exhibited almost constant slope and scatter since that time. For SFGs, the zero points in Sigma(e) and Sigma(1) decline by only x 2. This fact plus the narrowness of the relations suggests that galaxies could evolve roughly along the scaling relations. Quiescent galaxies follow different scaling relations that are offset to higher densities at the same mass and redshift. Furthermore, the zero point of their core density has declined by only x 2 since z similar to 3, while the zero point of the effective density declines by x 10. When galaxies quench, they move from the star-forming relations to the quiescent relations. This involves an increase in the core and effective densities, which suggests that SFGs could experience a phase of significant core growth relative to the average evolution along the structural relations. The distribution of massive galaxies relative to the SFR-M. and the quiescent S-M. relations exhibits an L-shape that is independent of redshift. The knee of this relation consists of a subset of "compact" SFGs that are the most likely precursors of quiescent galaxies forming at later times. The compactness selection threshold in Sigma(1). exhibits a small variation from z = 3 to 0.5, Sigma(1) - 0.65(log M* - 10.5)> 9.6 -9.3M(circle dot) kpc(-2), allowing the most efficient identification of compact SFGs and quiescent galaxies at every redshift.

引用

页数：23

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