The star formation rate at redshift one:: Hα spectroscopy with CIRPASS

被引：27

作者：

Doherty, Michelle

Bunker, Andrew

Sharp, Robert

Dalton, Gavin

Parry, Ian

Lewis, Ian

机构：

[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[2] European So Observ, D-85748 Garching, Germany

[3] Univ Exeter, Sch Phys, Exeter, Devon, England

[4] Anglo Australian Observ, Epping, NSW 1710, Australia

[5] NAPL, Oxford OX1 3RH, England

[6] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2006年 / 370卷 / 01期

关键词：

instrumentation : spectrographs; galaxies : evolution; galaxies : formation; galaxies : high-redshift; infrared : general;

D O I：

10.1111/j.1365-2966.2006.10484.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have conducted an H alpha survey of 38 0.77 <= z <= 1 galaxies over similar to 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 0.04M(circle dot) 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).

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收藏

页码：331 / 342

页数：12

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