Resolving the H i in damped Lyman α systems that power star formation
Resolving the H i in damped Lyman α systems that power star formation
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解析为恒星形成提供动力的阻尼莱曼α系统中的 H i
DOI:
10.1038/s41586-022-04616-1
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发表时间:
2022
期刊:
影响因子:
64.8
通讯作者:
Martin, D. Christopher
中科院分区:
文献类型:
--
作者:
Bordoloi, Rongmon;O’Meara, John M.;Sharon, Keren;Rigby, Jane R.;Cooke, Jeff;Shaban, Ahmed;Matuszewski, Mateusz;Rizzi, Luca;Doppmann, Greg;Martin, D. Christopher
Reservoirs of dense atomic gas (primarily hydrogen) contain approximately 90 per cent of the neutral gas at a redshift of 3, and contribute to between 2 and 3 per cent of the total baryons in the Universe, , –. These ‘damped Lyman α systems’—so called because they absorb Lyman α photons within and from background sources—have been studied for decades, but only through absorption lines present in the spectra of background quasars and γ-ray bursts, , , , –. Such pencil beams do not constrain the physical extent of the systems. Here we report integral-field spectroscopy of a bright, gravitationally lensed galaxy at a redshift of 2.7 with two foreground damped Lyman α systems. These systems are greater than 238 kiloparsecs squared in extent, with column densities of neutral hydrogen varying by more than an order of magnitude on scales of less than 3 kiloparsecs. The mean column densities are between 1020.46and 1020.84centimetres squared and the total masses are greater than 5.5 × 108–1.4 × 109times the mass of the Sun, showing that they contain the necessary fuel for the next generation of star formation, consistent with relatively massive, low-luminosity primeval galaxies at redshifts greater than 2.
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影响因子:
6.5
作者:
S. Ellison;R. Ibata;M. Pettini;G. Lewis;B. Aracil;P. Petitjean;R. Srianand
通讯作者:
R. Srianand
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Prochaska;A. Wolfe;J. Howk;E. Gawiser;S. Burles;J. Cooke
通讯作者:
J. Cooke
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
A. Fox;P. Petitjean;C. Ledoux;R. Srianand
通讯作者:
R. Srianand
影响因子:
4.8
作者:
R. Bordoloi;J. Rigby;J. Tumlinson;M. Bayliss;K. Sharon;M. Gladders;E. Wuyts
通讯作者:
E. Wuyts
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Jeff Cooke;J. O’Meara
通讯作者:
J. O’Meara