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The ALMA Spectroscopic Survey Large Program: The Infrared Excess of z = 1.5–10 UV-selected Galaxies and the Implied High-redshift Star Formation History
The Astrophysical Journal ( IF 4.8 ) Pub Date : 2020-10-19 , DOI: 10.3847/1538-4357/abb830
Rychard Bouwens 1 , Jorge Gonzlez-Lpez 2 , Manuel Aravena 2 , Roberto Decarli 3 , Mladen Novak 4 , Mauro Stefanon 1 , Fabian Walter 4, 5 , Leindert Boogaard 1 , Chris Carilli 5, 6 , Ugnė Dudzevičiūtė 7 , Ian Smail 7 , Emanuele Daddi 8 , Elisabete da Cunha 9 , Rob Ivison 10 , Themiya Nanayakkara 1, 11 , Paulo Cortes 12, 13 , Pierre Cox 14 , Hanae Inami 15 , Pascal Oesch 16, 17 , Gerg Popping 4, 10 , Dominik Riechers 18 , Paul van der Werf 1 , Axel Weiss 19 , Yoshi Fudamoto 16 , Jeff Wagg 20
Affiliation  

We make use of sensitive (9.3 microJy/beam RMS) 1.2mm-continuum observations from the ASPECS ALMA large program of the Hubble Ultra Deep Field (HUDF) to probe dust-enshrouded star formation from 1362 Lyman-break galaxies spanning the redshift range z=1.5-10 (to ~7-28 Msolar/yr at 4 sigma over the entire range). We find that the fraction of ALMA-detected galaxies in our z=1.5-10 samples increases steeply with stellar mass, with the detection fraction rising from 0% at 10^9 Msolar to 85(-18)(+9)% at >10^{10} Msolar. Moreover, stacking all 1253 low-mass ( 3, leveraging current improvements in the measured infrared excess and recent probes of ultra-luminous far-IR galaxies at z>2.

中文翻译:

ALMA 光谱巡天大计划:z = 1.5-10 紫外线选择星系的红外线过剩和隐含的高红移恒星形成历史

我们利用来自哈勃超深场 (HUDF) 的 ASPECS ALMA 大型程序的敏感(9.3 微焦/光束 RMS)1.2 毫米连续谱观测来探测跨越红移范围 z 的 1362 个莱曼断裂星系的尘埃笼罩恒星形成=1.5-10(在整个范围内在 4 西格玛时为 ~7-28 Msolar/yr)。我们发现在我们的 z=1.5-10 样本中 ALMA 检测到的星系的比例随着恒星质量的增加而急剧增加,检测比例从 10^9 Msolar 时的 0% 上升到 > 时的 85(-18)(+9)% 10^{10} 太阳能。此外,堆叠所有 1253 个低质量 (3),利用当前测量的红外过剩和最近对 z>2 的超亮远红外星系的探测。
更新日期:2020-10-19
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