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arXiv 1007.4101astro-ph.CO
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鼓吹呜呜祖拉:UltraDeep HI与MeerKAT的观测

Trumpeting the Vuvuzela: UltraDeep HI observations with MeerKAT

B. W. Holwerda, S-L. Blyth

摘要:

MeerKAT UltraDeep HI Survey旨在观察中性氢气的21 cm发射线,红移为z=1或更高。从直接探测和叠加信号,我们将解决HI质量函数,宇宙的宇宙中性气体密度(Omega_HI)及其在宇宙时间内的演化,以及星系演化,例如,Tully-Fisher关系,HI质量与哈勃类型或恒星质量的关系,Schmidt-Kennicutt成星定律。我们建议观察两个领域,COSMOS和钱德拉深场南(CDF-S)各1000小时,在2015年将实现MeerKAT(0.58-2.5 GHz)的全部瞬时带宽时,再增加4000小时。

英文摘要:

The MeerKAT UltraDeep HI Survey aims to observe the 21 cm emission line of neutral hydrogen gas out to a redshift of z=1 and beyond. From both direct detections and stacked signal, we will address the HI mass function, the cosmic neutral gas density of the Universe (Omega_HI) and their evolution over cosmic times, as well as galaxy evolution via e.g., the Tully-Fisher relation, the relation between HI mass and Hubble Type or stellar mass, and the Schmidt-Kennicutt star-formation law. We propose to observe two fields, the COSMOS and Chandra Deep Field South (CDF-S) for 1000 hours each, adding an additional 4000 hours to one of these fields in 2015 when the full instantaneous bandwidth of MeerKAT (0.58-2.5 GHz) will be realised.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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