The VLA-COSMOS 3 GHz Large Project: Evolution of Specific Star Formation Rates out to z ∼ 5,The Astrophysical Journal

当前位置： X-MOL 学术 › Astrophys. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

The VLA-COSMOS 3 GHz Large Project: Evolution of Specific Star Formation Rates out to z ∼ 5
The Astrophysical Journal ( IF 4.8 ) Pub Date : 2020-08-12 , DOI: 10.3847/1538-4357/aba044
Sarah K. Leslie _{1,

2} , Eva Schinnerer ₁ , Daizhong Liu ₁ , Benjamin Magnelli ₃ , Hiddo Algera ₂ , Alexander Karim ₃ , Iary Davidzon _{4,

5} , Ghassem Gozaliasl _{6,

7} , Eric F. Jimnez-Andrade ₃ , Philipp Lang ₁ , Mark T. Sargent ₈ , Mladen Novak ₁ , Brent Groves ₉ , Vernesa Smolčić ₁₀ , Giovanni Zamorani ₁₁ , Mattia Vaccari _{12,

13} , Andrew Battisti ₉ , Eleni Vardoulaki ₃ , Yingjie Peng ₁₄ , Jeyhan Kartaltepe ₁₅

Affiliation

Max-Planck-Institut fr Astronomie, Knigstuhl 17, D-69117, Heidelberg, Germany
Leiden Observatory, Leiden University, P.O. Box 9513, NL-2300 RA Leiden, The Netherlands 16
Argelander-Institut fr Astronomie, Auf dem Hgel 71, D-53121 Bonn, Germany
Cosmic Dawn Center (DAWN), Denmark
Niels Bohr Institute, University of Copenhagen, Lyngbyvej 2, Copenhagen DK-2100, Denmark
Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 , Helsinki, Finland
Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland
Astronomy Centre, Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, UK
Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia
Faculty of Science University of Zagreb Bijenička c. 32, 10002 Zagreb, Croatia
INAF—Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy
Inter-University Institute for Data Intensive Astronomy University of the Western Cape, Robert Sobukwe Road, 7535 Bellville, Cape Town, South Africa
INAF—Istituto di Radioastronomia, via Gobetti 101, I-40129 Bologna, Italy
Kavli Institute for Astronomy and Astrophysics, Peking University, 5 Yiheyuan Road, Beijing 100871, People’s Republic of China
School of Physics and Astronomy, Rochester Institute of Technology, Rochester, NY 14623, USA

We provide a coherent, uniform measurement of the evolution of the logarithmic star formation rate (SFR) - stellar mass ($M_*$) relation, called the main sequence of star-forming galaxies (MS), for galaxies out to $z\sim5$. We measure the MS using mean stacks of 3 GHz radio continuum images to derive average SFRs for $\sim$200,000 mass-selected galaxies at $z>0.3$ in the COSMOS field. We describe the MS relation adopting a new model that incorporates a linear relation at low stellar mass (log($M_*$/M$_\odot$)$<$10) and a flattening at high stellar mass that becomes more prominent at low redshift ($z<1.5$). We find that the SFR density peaks at $1.5

中文翻译：

VLA-COSMOS 3 GHz 大型项目：特定恒星形成率演化到 z ∼ 5

我们提供了对数恒星形成率 (SFR) - 恒星质量 ($M_*$) 关系演变的一致、统一的测量，称为恒星形成星系的主序 (MS)，对于星系到 $z\ sim5$。我们使用 3 GHz 射电连续谱图像的平均堆栈测量 MS，以推导出 COSMOS 场中 $\sim$200,000 质量选择星系的平均恒星形成率。我们描述了采用新模型的 MS 关系，该模型结合了低恒星质量（log（$M_*$/M$_\odot$）$<$10）的线性关系和高恒星质量的扁平化，在低质量时变得更加突出红移（$z<1.5$）。我们发现 SFR 密度峰值为 1.5 美元

更新日期：2020-08-12

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文