Thumbnail
Access Restriction
Open

Author Masters, Craig E. ♦ Ashman, Keith M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ GALACTIC EVOLUTION ♦ GALAXIES ♦ LUMINOSITY ♦ METALS ♦ VELOCITY ♦ ELEMENTS ♦ EVOLUTION ♦ OPTICAL PROPERTIES ♦ PHYSICAL PROPERTIES
Abstract The question of where the low-metallicity globular clusters in early-type galaxies came from has profound implications for the formation of those galaxies. Our work supports the idea that the metal-poor globular cluster systems of giant early-type galaxies formed in dwarf galaxies that have been subsumed by the giants. To support this hypothesis, two linear relations, one involving globular cluster metallicity versus host galaxy luminosity and one involving metallicity versus velocity dispersion were studied. Tentatively, these relations show that the bright ellipticals do not obey the same trend as the dwarfs, suggesting that the low-metallicity globular clusters did not form within their parent bright ellipticals.
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-12-10
Publisher Place United States
Journal Astrophysical Journal
Volume Number 725
Issue Number 1


Open content in new tab

   Open content in new tab