Gemini observations of galaxies in rich early environments (GOGREEN) I: survey description

Gemini observations of galaxies in rich early environments (GOGREEN) I: survey description
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双子座对丰富早期环境中星系的观测(GOGREEN)I:调查描述

DOI:
10.1093/mnras/stx1370
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发表时间:
2017
影响因子:
4.8
通讯作者:
Andrew Wetzel
Andrew Wetzel
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Balogh;D. Gilbank;A. Muzzin;G. Rudnick;M. Cooper;C. Lidman;A. Biviano;R. Demarco;S. McGee;J. Nantais;A. Noble;L. Old;G. Wilson;H. Yee;C. Bellhouse;C. Bellhouse;P. Cerulo;J. Chan;I. Pintos;R. Simpson;R. Burg;D. Zaritsky;F. Ziparo;M. V. Alonso;R. Bower;G. Lucia;A. Finoguenov;A. Finoguenov;D. Lambas;H. Muriel;L. Parker;A. Rettura;C. Valotto;Andrew Wetzel;Andrew Wetzel;Andrew Wetzel

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我们描述了一个新的大型计划正在进行中的双子座南北望远镜:双子座观测Galerkin在丰富的早期环境(GOGREEN)。这是对21个星系的成像和深度光谱观测,晕圈质量为110。科学目标包括测量环境在低质量星系演化中的作用,以及测量其宿主晕的动力学和恒星含量。这些目标是从SpARCS、SPT、COSMOS和SXDS调查中选出的,它们是当今集群和群体的进化对应物。GMOS上的新的红敏滨松探测器,再加上“闪烁-洗牌”天空减法,可以同时覆盖λ <$0.6 -1.05 μm的波长,这使得对所有类型星系的均匀和统计上完整的红移调查成为可能。光谱样本的目标是AB星等z <$< 24.25和[3.6] μm < 22.5的星系,因此对于恒星质量M*<$10 ^(10.3)M <$,对于所有星系类型和整个红移范围,在统计上是完整的。对于大多数系统,除了3.6 μm的深IRAC成像外,还可以在更大的视场(从u到K)上获得深多波长成像。光谱学在第17 A学期完成了50%,我们预计最终样本将有500个新的星系团成员。结合GCLASS,SPT和其他来源的较亮星系的现有光谱,GOGREEN将成为这个红移的大型遗留星系团和场星系样本,光谱覆盖了恒星质量,晕质量和星系团中心半径的广泛范围。
We describe a new Large Program in progress on the Gemini North and South telescopes: Gemini Observations of Galaxies in Rich Early Environments (GOGREEN). This is an imaging and deep spectroscopic survey of 21 galaxy systems at 1 10 in halo mass. The scientific objectives include measuring the role of environment in the evolution of low-mass galaxies, and measuring the dynamics and stellar contents of their host haloes. The targets are selected from the SpARCS, SPT, COSMOS, and SXDS surveys, to be the evolutionary counterparts of today's clusters and groups. The new red-sensitive Hamamatsu detectors on GMOS, coupled with the nod-and-shuffle sky subtraction, allow simultaneous wavelength coverage over λ ∼ 0.6–1.05 μm, and this enables a homogeneous and statistically complete redshift survey of galaxies of all types. The spectroscopic sample targets galaxies with AB magnitudes z΄ < 24.25 and [3.6] μm < 22.5, and is therefore statistically complete for stellar masses M* ≳ 10^(10.3) M⊙, for all galaxy types and over the entire redshift range. Deep, multiwavelength imaging has been acquired over larger fields for most systems, spanning u through K, in addition to deep IRAC imaging at 3.6 μm. The spectroscopy is ∼50 per cent complete as of semester 17A, and we anticipate a final sample of ∼500 new cluster members. Combined with existing spectroscopy on the brighter galaxies from GCLASS, SPT, and other sources, GOGREEN will be a large legacy cluster and field galaxy sample at this redshift that spectroscopically covers a wide range in stellar mass, halo mass, and clustercentric radius.
南极望远镜巡天第一个 178 度2 的 X 射线观测中 SUNYAEVâZELDovich 选定星团的宇宙学约束
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