Dust attenuation, dust emission, and dust temperature in galaxies at z ≥ 5: a view from the FIRE-2 simulations
Dust attenuation, dust emission, and dust temperature in galaxies at z ≥ 5: a view from the FIRE-2 simulations
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z ≤ 5 处星系中的尘埃衰减、尘埃排放和尘埃温度:来自 FIRE-2 模拟的视图
DOI:
10.1093/mnras/stz1324
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发表时间:
2019
影响因子:
4.8
通讯作者:
Kereš, Dušan
中科院分区:
文献类型:
--
作者:
Ma, Xiangcheng;Hayward, Christopher C;Casey, Caitlin M;Hopkins, Philip F;Quataert, Eliot;Liang, Lichen;Faucher-Giguère, Claude-André;Feldmann, Robert;Kereš, Dušan
We present a suite of 34 high-resolution cosmological zoom-in simulations consisting of thousands of haloes up to() atz≥ 5 from the Feedback in Realistic Environments project. We post-process our simulations with a three-dimensional Monte Carlo dust radiative transfer code to study dust attenuation, dust emission, and dust temperature within these simulatedz≥ 5 galaxies. Our sample forms a tight correlation between infrared excess (IRX ≡FIR/FUV) and ultraviolet (UV)-continuum slope (βUV), despite the patchy, clumpy dust geometry shown in our simulations. We find that the IRX–βUVrelation is mainly determined by the shape of the attenuation law and is independent of its normalization (set by the dust-to-gas ratio). The bolometric IR luminosity (LIR) correlates with theintrinsicUV luminosity and the star formation rate (SFR) averaged over the past 10 Myr. We predict that at a givenLIR, the peak wavelength of the dust spectral energy distributions forz≥ 5 galaxies is smaller by a factor of 2 (due to higher dust temperatures on average) than atz= 0. The higher dust temperatures are driven by higher specific SFRs and SFR surface densities with increasing redshift. We derive the galaxy UV luminosity functions (UVLFs) atz= 5–10 from our simulations and confirm that a heavy attenuation is required to reproduce the observed bright-end UVLFs. We also predict the IR luminosity functions (IRLFs) and UV luminosity densities atz= 5–10. We discuss the implications of our results on current and future observations probing dust attenuation and emission inz≥ 5 galaxies.
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影响因子:
6.5
作者:
Camps, Peter;Misselt, Karl;Steinacker, Juergen
通讯作者:
Steinacker, Juergen
影响因子:
4.8
作者:
S. Wilkins;Yu Feng;T. Matteo;R. Croft;C. Lovell;P. Thomas
通讯作者:
S. Wilkins;Yu Feng;T. Matteo;R. Croft;C. Lovell;P. Thomas
DOI:
10.3847/1538-4357/aa9a40
发表时间:
2017
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Stefanon;I. Labb'e;R. Bouwens;G. Brammer;P. Oesch;M. Franx;J. Fynbo;B. Milvang;A. Muzzin;G. Illingworth;O. Fèvre;K. Caputi;B. Holwerda;H. McCracken;R. Smit;D. Magee
通讯作者:
D. Magee
DOI:
10.3847/1538-4357/aaed25
发表时间:
2018-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
D. Narayanan;C. Conroy;R. Davé;Benjamin D. Johnson;G. Popping
通讯作者:
D. Narayanan;C. Conroy;R. Davé;Benjamin D. Johnson;G. Popping
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Kirk S. S. Barrow;J. Wise;M. Norman;B. O’Shea;Haoting Xu
通讯作者:
Haoting Xu