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Globular cluster formation within a cosmological context


Boley, A C; Lake, G; Read, J; Teyssier, R (2009). Globular cluster formation within a cosmological context. Astrophysical Journal Letters, 706(1):L192-L196.

Abstract

We place constraints on the formation redshifts for blue globular clusters (BGCs), independent of the details of hydrodynamics and population III star formation. The observed radial distribution of BGCs in the Milky Way Galaxy suggests that they formed in biased dark matter halos at high redshift. As a result, simulations of a ~1 Mpc box up to z ~ 10 must resolve BGC formation in ΛCDM. We find that most halo stars could be produced from destroyed BGCs and other low-mass clusters that formed at high redshift. We present a proof-of-concept simulation that captures the formation of globular-like star clusters.

We place constraints on the formation redshifts for blue globular clusters (BGCs), independent of the details of hydrodynamics and population III star formation. The observed radial distribution of BGCs in the Milky Way Galaxy suggests that they formed in biased dark matter halos at high redshift. As a result, simulations of a ~1 Mpc box up to z ~ 10 must resolve BGC formation in ΛCDM. We find that most halo stars could be produced from destroyed BGCs and other low-mass clusters that formed at high redshift. We present a proof-of-concept simulation that captures the formation of globular-like star clusters.

Citations

25 citations in Web of Science®
25 citations in Scopus®
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Additional indexing

Other titles:Resolving globular cluster formation within a cosmological context
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:November 2009
Deposited On:22 Feb 2010 10:20
Last Modified:05 Apr 2016 13:56
Publisher:Institute of Physics Publishing
ISSN:2041-8205
Funders:SNF, Zurich CTS
Publisher DOI:10.1088/0004-637X/706/1/L192
Related URLs:http://arxiv.org/abs/0908.1254
Permanent URL: http://doi.org/10.5167/uzh-30857

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