The star formation rate at redshift one: Hα spectroscopy with CIRPASS
The star formation rate at redshift one: Hα spectroscopy with CIRPASS
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红移一处的恒星形成率：使用 CIRPASS 的 Hα 光谱
DOI：
10.1111/j.1365-2966.2006.10484.x
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发表时间：
2006
影响因子：
4.8
通讯作者：
I. Lewis
中科院分区：
文献类型：
--
作者：
M. Doherty;A. Bunker;R. Sharp;G. Dalton;I. Parry;I. Lewis
利用威廉·赫歇尔望远镜（WHT）上的剑桥红外全景巡天摄谱仪（CIRPASS），在哈勃深场北场和侧场对38个0.77 ≤ z ≤ 1星系进行了100 arcmin ~ 2的Ha巡天观测，以确定星星的形成率（SFR）。这是该技术首次成功应用于观测高红移星系。在静止坐标系中叠加光谱来推断该场的总SFR，我们发现在红移z = 1处的SFR密度的下限（未对尘埃红化进行校正）为0.04 M·yr-1 Mpc-3。这意味着SFR密度从z = 0到1的快速演变，其与（1 + z）3.1成比例。
We have conducted an Ha survey of 38 0.77 ≤ z ≤ 1 galaxies over ∼100 arcmin 2 of the Hubble Deep Field-North and Flanking Fields, to determine star formation rates (SFRs), with the near-IR multi-object spectrograph Cambridge Infrared Panoramic Survey Spectrograph (CIRPASS) on the William Herschel Telescope (WHT). This represents the first successful application of this technique to observing high-redshift galaxies. Stacking the spectra in the rest frame to infer a total SFR for the field, we find a lower limit (uncorrected for dust reddening) on the SFR density at redshift z = 1 of 0.04 M ⊙ yr -1 Mpc -3 . This implies rapid evolution in the SFR density from z = 0 to 1 which is proportional to (1 + z) 3.1 .