Aaron C. Boley et al 2009 ApJ 706 L192 doi:10.1088/0004-637X/706/1/L192
Aaron C. Boley, George Lake, Justin Read and Romain Teyssier
Show affiliationsWe 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.
early universe; galaxies: star clusters; globular clusters: general
98.20.Gm Globular clusters in the Milky Way
98.62.Py Distances, redshifts, radial velocities; spatial distribution of galaxies
95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)
Issue 1 (2009 November 20)
Received 2009 August 9, accepted for publication 2009 October 20
Published 2009 November 6
Aaron C. Boley et al 2009 ApJ 706 L192
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