Submillimetre flux as a probe of molecular ISM mass in high-z galaxies
Submillimetre flux as a probe of molecular ISM mass in high-z galaxies
复制标题
亚毫米通量作为高 z 星系中分子 ISM 质量的探针
DOI:
10.1093/mnrasl/sly071
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发表时间:
2018
影响因子:
--
通讯作者:
Scoville, Nick Z
中科院分区:
文献类型:
--
作者:
Liang, Lichen;Feldmann, Robert;Faucher-Giguère, Claude-André;Kereš, Dušan;Hopkins, Philip F;Hayward, Christopher C;Quataert, Eliot;Scoville, Nick Z
Recent long-wavelength observations on the thermal dust continuum suggest that the Rayleigh–Jeans tail can be used as a time-efficient quantitative probe of the dust and interstellar medium (ISM) mass in high-zgalaxies. We use high-resolution cosmological simulations from the Feedback in Realistic Environment (FIRE) project to analyse the dust emission ofM*≳ 1010M⊙galaxies atz= 2–4. Our simulations (MassiveFIRE) explicitly include various forms of stellar feedback, and they produce the stellar masses and star formation rates of high-zgalaxies in agreement with observations. Using radiative transfer modelling, we show that sub-millimetre (sub-mm) luminosity and molecular ISM mass are tightly correlated and that the overall normalization is in quantitative agreement with observations. Notably, sub-mm luminosity traces molecular ISM mass even during starburst episodes as dust mass and mass-weighted temperature evolve only moderately betweenz= 4 andz= 2, including during starbursts. Our finding supports the empirical approach of using broadband sub-mm flux as a proxy for molecular gas content in high-zgalaxies. We thus expect single-band sub-mm observations with ALMA to dramatically increase the sample size of high-zgalaxies with reliable ISM masses in the near future.
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DOI:
10.1088/0004-637x/743/2/159
发表时间:
2010-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
C. Hayward;D. Keres̆;P. Jonsson;D. Narayanan;T. J. Cox;L. Hernquist
通讯作者:
C. Hayward;D. Keres̆;P. Jonsson;D. Narayanan;T. J. Cox;L. Hernquist
影响因子:
4.9
作者:
Aravena, M.;Decarli, R.;Wagg, J.
通讯作者:
Wagg, J.
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
K. Olsen;T. Greve;C. Brinch;J. Sommer;J. Rasmussen;S. Toft;A. Zirm
通讯作者:
A. Zirm
DOI:
10.3847/0004-637x/818/1/62
发表时间:
2015
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Safarzadeh;C. Hayward;H. Ferguson;R. Somerville
通讯作者:
R. Somerville
影响因子:
4.8
作者:
A. J. Richings;J. Schaye
通讯作者:
J. Schaye