Observing Galaxies and Dissecting their Baryon Cycle at Cosmic Noon
Observing Galaxies and Dissecting their Baryon Cycle at Cosmic Noon
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在宇宙正午观测星系并剖析它们的重子周期
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
F. Zahedy
中科院分区：
文献类型：
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作者：
G. Rudie;Hsiao;A. Newman;S. Johnson;R. Simcoe;E. Boettcher;T. Cooper;D. Keres̆;T. Jones;Daniel Anges;A. Benson;J. Chisholm;A. Emerick;C. Faucher;D. Fielding;C. Hummels;J. Kollmeier;A. Lanz;J. Mulchaey;B. Oppenheimer;E. Quataert;N. Reddy;E. Schneider;C. Steidel;J. Stern;R. Trainor;F. Zahedy
气体吸积和外流深刻地影响着星系的形成和演化;然而，这些过程很难建模，并提出了独特的观测挑战。宇宙正午（z = 2 − 3）是研究宇宙气体流动的一个特别富有成果的时期，因为它们被预测在这一时期达到峰值，星系的许多物理和结构特性似乎也在这一时期出现。这篇白色论文讨论了几个观测机会，这些机会可能会在这个关键的宇宙时代改变星系风和重子循环的观测景观。在宇宙正午，对不同星系群进行深度、宽视场、高度复用的光谱学研究，有望阐明风的物理驱动因素。与密集采样的背景星系光谱学相结合，我们可以首次解析单个星系CGM内的结构，阐明气体晕的多样性及其与星系形成的关系。最后，周围星系的宽场光谱可以
Gas accretion and outflows profoundly influence the formation and evolution of galaxies; however, these processes are difficult to model and present unique observational challenges. Cosmic Noon (z ∼ 2 − 3) is a particularly fruitful period in which to study cosmic gas flows as they are predicted to peak during this epoch, and many of the physical and structural properties of galaxies appear to emerge during this time as well. This white paper addresses several observational opportunities which could change the observational landscape of galactic winds and the baryon cycle during this critical cosmic epoch. Deep, wide-field, highly-multiplexed spectroscopy of a diverse population of galaxies at cosmic noon promises to elucidate the physical drivers of winds. Paired with densely-sampled background galaxy spectroscopy, we can resolve structures within the CGM of individual galaxies for the first time, illuminating the diversity of gaseous halos and their relation to galaxy formation. Finally, wide-field spectroscopy of galaxies in the surrounding volume can