HUBBLE SPACE TELESCOPE GRISM SPECTROSCOPY OF EXTREME STARBURSTS ACROSS COSMIC TIME: THE ROLE OF DWARF GALAXIES IN THE STAR FORMATION HISTORY OF THE UNIVERSE
HUBBLE SPACE TELESCOPE GRISM SPECTROSCOPY OF EXTREME STARBURSTS ACROSS COSMIC TIME: THE ROLE OF DWARF GALAXIES IN THE STAR FORMATION HISTORY OF THE UNIVERSE
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宇宙时间极端星暴的哈勃太空望远镜格里斯光谱:矮星系在宇宙恒星形成历史中的作用
DOI:
10.1088/0004-637x/789/2/96
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Atek H
中科院分区:
文献类型:
--
作者:
Atek H
Near infrared slitless spectroscopy with the Wide Field Camera 3, on board the Hubble Space Telescope, offers a unique opportunity to study low-mass galaxy populations at high redshift (z∼ 1–2). While most high-z surveys are biased toward massive galaxies, we are able to select sources via their emission lines that have very faint continua. We investigate the star formation rate (SFR)–stellar mass (M⋆) relation for about 1000 emission line galaxies identified over a wide redshift range of 0.3≲ z≲ 2.3. We use the Hα emission as an accurate SFR indicator and correct the broadband photometry for the strong nebular contribution to derive accurate stellar masses down to M⋆∼ 10 7 M☉. We focus here on a subsample of galaxies that show extremely strong emission lines (EELGs) with rest-frame equivalent widths ranging from 200 to 1500 Å. This population consists of outliers to the normal SFR–M⋆ sequence with much higher specific SFRs (> 10 Gyr− 1). While on-sequence galaxies follow continuous star formation processes, EELGs are thought to be caught during an extreme burst of star formation that can double their stellar mass in a period of less than 100 Myr. The contribution of the starburst population to the total star formation density appears to be larger than what has been reported for more massive galaxies in previous studies. In the complete mass range 8.2< log (M⋆/M☉)< 10 and a SFR lower completeness limit of about 2 M☉ yr− 1 (10 M☉ yr− 1) at z∼ 1 (z∼ 2), we find that starbursts having EW rest (Hα)> 300, 200, and 100 Å contribute up to∼ 13%, 18%, and 34%, respectively, to the total SFR of emission-line-selected sample at z∼ 1–2. The comparison with samples of massive galaxies shows an increase in the contribution of starbursts toward lower masses.
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DOI:
10.1086/591083
发表时间:
2008-06
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
Y. Ueda;M. Watson;I. Stewart;M. Akiyama;A. Schwope;G. Lamer;J. Ebrero;F. Carrera;K. Sekiguchi-K.-Seki
通讯作者:
Y. Ueda;M. Watson;I. Stewart;M. Akiyama;A. Schwope;G. Lamer;J. Ebrero;F. Carrera;K. Sekiguchi-K.-Seki
DOI:
10.1086/521333
发表时间:
2007-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Y. Kakazu;L. Cowie;E. Hu
通讯作者:
Y. Kakazu;L. Cowie;E. Hu
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
N. Hathi;S. Cohen;R. Ryan;S. Finkelstein;P. McCarthy;R. Windhorst;H. Yan;A. Koekemoer;M. Rutkowski;R. O’Connell;A. Straughn;B. Balick;H. Bond;D. Calzetti;M. Disney;M. Dopita;M. Dopita;J. Frogel;D. Hall;J. Holtzman;R. Kimble;F. Paresce;A. Saha;J. Silk;J. Trauger;A. Walker;B. Whitmore;E. Young
通讯作者:
E. Young
DOI:
10.1088/0004-637x/738/1/69
发表时间:
2011-03
期刊:
arXiv: Cosmology and Nongalactic Astrophysics
影响因子:
--
作者:
H. Shim;R. Chary;M. Dickinson;Lihwai Lin;H. Spinrad;D. Stern;Chi-Hung Yan
通讯作者:
H. Shim;R. Chary;M. Dickinson;Lihwai Lin;H. Spinrad;D. Stern;Chi-Hung Yan
DOI:
10.1051/0004-6361/200911781
发表时间:
2009
期刊:
arXiv: Cosmology and Nongalactic Astrophysics
影响因子:
--
作者:
D. Schaerer;S. D. Barros
通讯作者:
S. D. Barros