Globular clusters with the extended horizontal-branch as remaining cores of galaxy building blocks

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dc.creatorLee, Young-Wook
dc.creatorGim, Hansung B.
dc.creatorChung, Chul
dc.date2007-07-11
dc.date.accessioned2026-07-07T08:16:11Z
dc.date.available2026-07-07T08:16:11Z
dc.descriptionThe relics of building blocks that made stellar halo and bulge are yet to be discovered unless they were completely disrupted throughout the history of the Galaxy. Here we suggest that about 25% of the Milky Way globular clusters have characteristics of the remaining cores of these early building blocks rather than genuine star clusters. They are clearly distinct from other normal globular clusters in the presence of extended horizontal-branch and multiple stellar populations, in mass (brightness), and most importantly in orbital kinematics. Based on this result, a three-stage formation picture of the Milky Way is suggested, which includes early mergers, collapse, and later accretion.
dc.descriptionInvited paper presented at the conference "New Quests in Stellar Astrophysics II: Ultraviolet Properties of Evolved Stellar Populations", M. Chavez, E. Bertone, D. Rosa-Gonzalez, & L. H. Rodriguez-Merino eds
dc.identifierhttps://arxiv.org/abs/0707.1705
dc.identifierhttp://arxiv.org/abs/0707.1705
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/133693
dc.subjectAstrophysics
dc.titleGlobular clusters with the extended horizontal-branch as remaining cores of galaxy building blocks
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