5 papers
The very late-stage merger IC 4200:pre-elliptical or pre-spiral?
P. Serra, S. C. Trager, J. M. van der Hulst +3
Recent observations have revealed a class of unusually HI-rich early-type galaxies. By combining observations of their morphology, stellar populations and neutral hydrogen we aim t…
Abundances from the Integrated Light of Globular Clusters and Galaxies
S. C. Trager
It is currently impossible to determine the abundances and ages of the stellar populations of distant, dense stellar systems star by star. Therefore, methods to analyze the composi…
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…
The Ages of Early-Type Galaxies: A Cautionary Tale
S. C. Trager
Early-type galaxies are not the simple Population II systems they have long been assumed to be. While upwards of 80% of the stellar mass of early-type galaxies likely formed at hig…
Integrated Stellar Populations of Bulges: First Results
S. C. Trager, J. J. Dalcanton, B. J. Weiner
We present first results from an on-going survey of the stellar populations of the bulges and inner disks of spirals at various points along the Hubble sequence. In particular, we…