Star Formation Histories of Nearby Elliptical Galaxies. I. Volume-Limited Sample | Zendy

Justin Howell | Zendy

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Star Formation Histories of Nearby Elliptical Galaxies. I. Volume-Limited Sample

Author(s) -

Justin Howell

Publication year - 2005

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/496974

Subject(s) - elliptical galaxy , astrophysics , physics , galaxy , lenticular galaxy , metallicity , fundamental plane (elliptical galaxies) , galaxy group , surface brightness fluctuation , population , stellar population , star formation , astronomy , stellar mass , demography , sociology

This work presents high $S/N$ spectroscopic observations of a representativesample of nearby elliptical galaxies. These observations provide a strong testof models for the formation of elliptical galaxies and their star formationhistories. Combining these data with the Gonzalez (1993) data set, a volumelimited sample of 45 galaxies has been defined. Results are in agreement withprevious studies: the existence of the metallicity hyper-plane and the Z-planeof Trager et al. (2000) is confirmed, and the distribution is clearly due tophysical variations in stellar population parameters and not measurementuncertainty. Trends between stellar population parameters and galaxy structuralparameters suggest that angular momentum may determine the chemical abundanceof a galaxy at a given mass.Comment: 11 pages, 6 tables, 21 figures, accepted for publication in A

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