The effect of star formation on the redshift evolution of interstellar metals, atomic and molecular gas in galaxies
The effect of star formation on the redshift evolution of interstellar metals, atomic and molecular gas in galaxies
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恒星形成对星系中星际金属、原子和分子气体红移演化的影响
DOI：
10.1111/j.1365-2966.2012.21356.x
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发表时间：
2012-03
影响因子：
4.8
通讯作者：
Guo, Qi
中科院分区：
文献类型：
--
作者：
Fu, Jian;Kauffmann, Guinevere;Li, Cheng;Guo, Qi
We examine how the atomic and molecular gas components of galaxies evolve to higher redshifts using the semi-analytic galaxy formation models of Fu et al. in which we track the surface density profiles of gas in discs. We adopt two different prescriptions based either on gas surface density and metallicity or on interstellar pressure, to compute the molecular fraction as a function of radius in each disc. We demonstrate that the adopted star formation law determines how the balance between gas, stars and metals changes with time in the star-forming galaxy population, but does not influence the total mass in stars formed into galaxies at redshifts below z similar to 2.5. The redshift evolution of the massmetallicity relation places strong constraints on the time-scale over which cold gas is converted into stars in high-redshift galaxies, and favours models where this remains constant at values around 12 Gyr. Future observations of the evolution of the average molecular-to-atomic gas ratio in galaxies as a function of stellar mass and redshift will constrain models of the atomic-to-molecular transition.
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DOI：
10.1111/j.1365-2966.2011.19583.x
发表时间：
2011-05
影响因子：
4.8
作者：
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通讯作者：
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DOI：
10.1086/184795
发表时间：
1986-09
期刊：
The Astrophysical Journal
影响因子：
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DOI：
10.1111/j.1365-2966.2010.17593.x
发表时间：
2010-08
期刊：
arXiv: Cosmology and Nongalactic Astrophysics
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DOI：
10.1086/523690
发表时间：
2007-09
期刊：
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影响因子：
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