Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

The spatial distribution of cold gas in hierarchical galaxy formation models.

Kim, H.-S. and Baugh, C.M. and Benson, A.J. and Cole, S. and Frenk, C.S. and Lacey, C.G. and Power, C. and Schneider, M. (2011) 'The spatial distribution of cold gas in hierarchical galaxy formation models.', Monthly notices of the Royal Astronomical Society., 414 (3). pp. 2367-2385.

Abstract

The distribution of cold gas in dark matter haloes is driven by key processes in galaxy formation: gas cooling, galaxy mergers, star formation and reheating of gas by supernovae. We compare the predictions of four different galaxy formation models for the spatial distribution of cold gas. We find that satellite galaxies make little contribution to the abundance or clustering strength of cold gas selected samples, and are far less important than they are in optically selected samples. The halo occupation distribution function of present-day central galaxies with cold gas mass >109 h−1 M⊙ is peaked around a halo mass of ≈1011 h−1 M⊙, a scale that is set by the AGN suppression of gas cooling. The model predictions for the projected correlation function are in good agreement with measurements from the H i Parkes All-Sky Survey. We compare the effective volume of possible surveys with the Square Kilometre Array with those expected for a redshift survey in the near-infrared. Future redshift surveys using neutral hydrogen emission will make possible measurements of the baryonic acoustic oscillations that are competitive with the most ambitious spectroscopic surveys planned in the near-infrared.

Item Type:Article
Additional Information:http://adsabs.harvard.edu/abs/2011MNRAS.414.2367K
Keywords:Galaxies: evolution, Galaxies: formation, Galaxies: luminosity function, Mass function, Large-scale structure of Universe.
Full text:(VoR) Version of Record
Download PDF
(2543Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1111/j.1365-2966.2011.18556.x
Publisher statement:This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Record Created:14 Dec 2014 10:50
Last Modified:17 Dec 2014 09:55

Social bookmarking: del.icio.usConnoteaBibSonomyCiteULikeFacebookTwitterExport: EndNote, Zotero | BibTex
Look up in GoogleScholar | Find in a UK Library