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Population Synthesis in the Blue II. The Spectroscopic Age of 47 Tucanae
Ricardo P. Schiavon, S. M. Faber, James A. Rose +1
We develop a new set of models for intermediate-metallicity single stellar populations in the blue/optical region and use those models to determine the spectroscopic age of 47 Tuc.…
Population Synthesis in the Blue I. Synthesis of the Integrated Spectrum of 47 Tucanae from its Color-Magnitude Diagram
Ricardo P. Schiavon, S. M. Faber, Bruno V. Castilho +1
We perform an empirical synthesis of the blue integrated spectrum of the metal-rich globular cluster 47 Tucanae, based directly on the color-magnitude diagram of the cluster couple…
Are There Blue, Massive E/S0s at z < 1 ?: Kinematics of Blue Spheroidal Galaxy Candidates
Myungshin Im, S. M. Faber, Karl Gebhardt +5
Several recent studies find that 10 - 50% of morphologically selected field early-type galaxies at redshifts z <= 1 have blue colors indicative of recent star formation. Such ``blu…
The Formation Timescales of Giant Spheroids
S. C. Trager, S. M. Faber, A. Dressler
We review current progress in the study of the stellar populations of early-type galaxies, both locally and at intermediate redshifts. In particular, we focus on the ages of these…