Globular Clusters in Early-Type Galaxies with GMOS

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dc.creatorBridges, Terry
dc.creatorBeasley, Mike
dc.creatorFaifer, Favio
dc.creatorForbes, Duncan
dc.creatorForte, Juan
dc.creatorGebhardt, Karl
dc.creatorHanes, Dave
dc.creatorSharples, Ray
dc.creatorZepf, Steve
dc.date2003-10-13
dc.date.accessioned2026-07-07T02:10:21Z
dc.date.available2026-07-07T02:10:21Z
dc.descriptionWe present recent results from our long-term Gemini/GMOS study of globular clusters in early-type galaxies. To date, we have obtained photometry and spectroscopy for clusters in NGCs 3379, 4649, 524, 7332, and IC 1459. We find a clear bimodality in the NGC 4649 cluster colour distribution, with the fraction of blue/red clusters increasing with galactocentric radius. We derive ages and metallicities for 22 clusters in NGC 3379, finding that most of the clusters appear old (10-15 Gyr); however, there is a group of 4 metal-rich, younger clusters with ages of 2-6 Gyr. The NGC 3379 cluster velocity dispersion decreases with radius, as does the inferred (local) mass-to-light ratio: there is no evidence for a dark matter halo in NGC 3379 based on our globular cluster data.
dc.description3 pages, 2 figures, uses newpasp.sty (included). 'In press' for "Joint Discussion #6: Extragalactic Globular Clusters and their Host Galaxies", IAU General Assembly, July 2003. Editors: T. Bridges and D. Forbes
dc.identifierhttps://arxiv.org/abs/astro-ph/0310324
dc.identifierhttp://arxiv.org/abs/astro-ph/0310324
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6709
dc.subjectAstrophysics
dc.titleGlobular Clusters in Early-Type Galaxies with GMOS
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