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Galaxy formation spanning cosmic history

Benson, Andrew J. and Bower, Richard (2010) Galaxy formation spanning cosmic history. Monthly Notices of the Royal Astronomical Society, 405 (3). pp. 1573-1623. ISSN 0035-8711. doi:10.1111/j.1365-2966.2010.16592.x.

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Over the past several decades, galaxy formation theory has met with significant successes. In order to test current theories thoroughly we require predictions for as yet unprobed regimes. To this end, we describe a new implementation of the Galform semi-analytic model of galaxy formation. Our motivation is the success of the model described by Bower et al. in explaining many aspects of galaxy formation. Despite this success, the Bower et al. model fails to match some observational constraints, and certain aspects of its physical implementation are not as realistic as we would like. The model described in this work includes substantially updated physics, taking into account developments in our understanding over the past decade, and removes certain limiting assumptions made by these (and most other) semi-analytic models. This allows it to be exploited reliably in high-redshift and low-mass regimes. Furthermore, we have performed an exhaustive search of model parameter space to find a particular set of model parameters which produce results in good agreement with a wide range of observational data (luminosity functions, galaxy sizes and dynamics, clustering, colours, metal content) over a wide range of redshifts. This model represents a solid basis on which to perform calculations of galaxy formation in as yet unprobed regimes.

Item Type:Article
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Benson, Andrew J.0000-0001-5501-6008
Additional Information:© 2010 The Authors. Journal compilation © 2010 RAS. Accepted 2010 February 24. Received 2010 January 25; in original form 2009 October 19. AJB acknowledges support from the Gordon and Betty Moore Foundation and would like to acknowledge the hospitality of the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara, where part of this work was completed. This research was supported in part by the National Science Foundation under Grant No. NSF PHY05-51164. We thank the GALFORM team (Carlton Baugh, Shaun Cole, Carlos Frenk, John Helly and Cedric Lacey) for allowing us to use the collaboratively developed GALFORM code in this work. This work has benefited from conversations with numerous people, including Juna Kollmeier, Aparna Venkatesan, Annika Peter, Alyson Brooks and Yu Lu. We thank Simon White and the anonymous referee for suggestions which helped improve the clarity of the original manuscript. We thank Shiyin Shen for providing data in electronic form. We are grateful to the authors of RECFAST and CLOUDY for making these valuable codes publicly available and to Charlie Conroy, Jim Gunn, Martin White and Jason Tumlinson for providing SEDs of single stellar populations. Lauren Porter and Tom Fox contributed code to compute galaxy clustering and IGM evolution, respectively. We gratefully acknowledge the Institute for Computational Cosmology at the University of Durham for supplying a large fraction of the computing time required by this project. This research was supported in part by the National Science Foundation through TeraGrid (Catlett 2007) resources provided by the NCSA and by Amazon Elastic Compute Cloud resources provided by a generous grant from the Amazon in Education program.
Group:Moore Center for Theoretical Cosmology and Physics
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
NSFCatlett 2007
Amazon in Education programUNSPECIFIED
Subject Keywords:galaxies: evolution; galaxies: formation; galaxies: general; galaxies: high-redshift; intergalactic medium
Issue or Number:3
Record Number:CaltechAUTHORS:20100714-143601301
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Official Citation:Andrew J. Benson and Richard Bower Galaxy formation spanning cosmic history MNRAS (2010) Vol. 405 1573-1623 doi:10.1111/j.1365-2966.2010.16592.x First published online July 1, 2010
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19050
Deposited By: Tony Diaz
Deposited On:05 Aug 2010 18:50
Last Modified:08 Nov 2021 23:49

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