Spatially adaptive radiation-hydrodynamical simulations of galaxy formation during cosmological reionization

被引:58
作者
Pawlik, Andreas H. [1 ]
Schaye, Joop [2 ]
Dalla Vecchia, Claudio [3 ,4 ]
机构
[1] Max Planck Inst Astrophys, D-85748 Garching, Germany
[2] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
[3] Inst Astrofis Canarias, E-38205 Tenerife, Spain
[4] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain
基金
欧洲研究理事会;
关键词
radiative transfer; methods: numerical; H II regions; galaxies: high-redshift; intergalactic medium; dark ages; reionization; first stars; SMOOTHED PARTICLE HYDRODYNAMICS; HIGH-REDSHIFT GALAXIES; STAR-FORMING GALAXIES; LY-ALPHA-EMITTERS; FULLY COUPLED SIMULATION; LOCAL STELLAR RADIATION; ACTIVE GALACTIC NUCLEI; LOW-MASS GALAXIES; COLD DARK-MATTER; 1ST BLACK-HOLES;
D O I
10.1093/mnras/stv976
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a suite of cosmological radiation-hydrodynamical simulations of the assembly of galaxies driving the reionization of the intergalactic medium (IGM) at z greater than or similar to 6. The simulations account for the hydrodynamical feedback from photoionization heating and the explosion of massive stars as supernovae (SNe). Our reference simulation, which was carried out in a box of size 25 h(-1) comovingMpc using 2 x 512(3) particles, produces a reasonable reionization history and matches the observed UV luminosity function of galaxies. Simulations with different box sizes and resolutions are used to investigate numerical convergence, and simulations in which either SNe or photoionization heating or both are turned off, are used to investigate the role of feedback from star formation. Ionizing radiation is treated using accurate radiative transfer at the high spatially adaptive resolution at which the hydrodynamics is carried out. SN feedback strongly reduces the star formation rates (SFRs) over nearly the full mass range of simulated galaxies and is required to yield SFRs in agreement with observations. Photoheating helps to suppress star formation in low-mass galaxies, but its impact on the cosmic SFR is small. Because the effect of photoheating is masked by the strong SN feedback, it does not imprint a signature on the UV galaxy luminosity function, although we note that our resolution is insufficient to model star-forming minihaloes cooling through molecular hydrogen transitions. Photoheating does provide a strong positive feedback on reionization because it smooths density fluctuations in the IGM, which lowers the IGM recombination rate substantially. Our simulations demonstrate a tight non-linear coupling of galaxy formation and reionization, motivating the need for the accurate and simultaneous inclusion of photoheating and SN feedback in models of the early Universe.
引用
收藏
页码:1586 / 1605
页数:20
相关论文
共 205 条
[1]   Radiative transfer effects during photoheating of the intergalactic medium [J].
Abel, T ;
Haehnelt, MG .
ASTROPHYSICAL JOURNAL, 1999, 520 (01) :L13-L16
[2]   Photon-conserving radiative transfer around point sources in multidimensional numerical cosmology [J].
Abel, T ;
Norman, ML ;
Madau, P .
ASTROPHYSICAL JOURNAL, 1999, 523 (01) :66-71
[3]   The HII region of a primordial star [J].
Abel, Tom ;
Wise, John H. ;
Bryan, Greg L. .
ASTROPHYSICAL JOURNAL, 2007, 659 (02) :L87-L90
[4]   Planck 2013 results. XVI. Cosmological parameters [J].
Ade, P. A. R. ;
Aghanim, N. ;
Armitage-Caplan, C. ;
Arnaud, M. ;
Ashdown, M. ;
Atrio-Barandela, F. ;
Aumont, J. ;
Baccigalupi, C. ;
Banday, A. J. ;
Barreiro, R. B. ;
Bartlett, J. G. ;
Battaner, E. ;
Benabed, K. ;
Benoit, A. ;
Benoit-Levy, A. ;
Bernard, J. -P. ;
Bersanelli, M. ;
Bielewicz, P. ;
Bobin, J. ;
Bock, J. J. ;
Bonaldi, A. ;
Bond, J. R. ;
Borrill, J. ;
Bouchet, F. R. ;
Bridges, M. ;
Bucher, M. ;
Burigana, C. ;
Butler, R. C. ;
Calabrese, E. ;
Cappellini, B. ;
Cardoso, J. -F. ;
Catalano, A. ;
Challinor, A. ;
Chamballu, A. ;
Chary, R. -R. ;
Chen, X. ;
Chiang, H. C. ;
Chiang, L. -Y ;
Christensen, P. R. ;
Church, S. ;
Clements, D. L. ;
Colombi, S. ;
Colombo, L. P. L. ;
Couchot, F. ;
Coulais, A. ;
Crill, B. P. ;
Curto, A. ;
Cuttaia, F. ;
Danese, L. ;
Davies, R. D. .
ASTRONOMY & ASTROPHYSICS, 2014, 571
[5]   DETECTING THE RISE AND FALL OF THE FIRST STARS BY THEIR IMPACT ON COSMIC REIONIZATION [J].
Ahn, Kyungjin ;
Iliev, Ilian T. ;
Shapiro, Paul R. ;
Mellema, Garrelt ;
Koda, Jun ;
Mao, Yi .
ASTROPHYSICAL JOURNAL LETTERS, 2012, 756 (01)
[6]   THE INHOMOGENEOUS BACKGROUND OF H2-DISSOCIATING RADIATION DURING COSMIC REIONIZATION [J].
Ahn, Kyungjin ;
Shapiro, Paul R. ;
Iliev, Ilian T. ;
Mellema, Garrelt ;
Pen, Ue-Li .
ASTROPHYSICAL JOURNAL, 2009, 695 (02) :1430-1445
[7]   The impact of different physical processes on the statistics of Lyman-limit and damped Lyman α absorbers [J].
Altay, Gabriel ;
Theuns, Tom ;
Schaye, Joop ;
Booth, C. M. ;
Dalla Vecchia, Claudio .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 436 (03) :2689-2707
[8]   IMPLICATIONS OF WMAP 3 YEAR DATA FOR THE SOURCES OF REIONIZATION [J].
Alvarez, Marcelo A. ;
Shapiro, Paul R. ;
Ahn, Kyungjin ;
Iliev, Ilian T. .
ASTROPHYSICAL JOURNAL, 2006, 644 (02) :L101-L104
[9]   CONSTRAINTS ON THE IONIZING EFFICIENCY OF THE FIRST GALAXIES [J].
Alvarez, Marcelo A. ;
Finlator, Kristian ;
Trenti, Michele .
ASTROPHYSICAL JOURNAL LETTERS, 2012, 759 (02)
[10]   ACCRETION ONTO THE FIRST STELLAR-MASS BLACK HOLES [J].
Alvarez, Marcelo A. ;
Wise, John H. ;
Abel, Tom .
ASTROPHYSICAL JOURNAL LETTERS, 2009, 701 (02) :L133-L137