Multi-Object Spectroscopy of the GC Systems of Ellipticals

Details Multi-Object Spectroscopy of the GC Systems of Ellipticals Multi-Object Spectroscopy of the GC Systems of Ellipticals

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003noao.prop..138g&link_type=abstract

NOAO Proposal ID #2003A-0138

Computer Science

Scientific paper

One of our most important probes for understanding galaxy formation and evolution are globular cluster (GC) systems. We are continuing our aggressive campaign to obtain spectroscopy for a large sample of GCs in galaxies with a variety of properties, in different environments, in order to understand their kinematics, ages and abundances. Kinematical results from this project will provide a detailed picture of the individual dark matter haloes of galaxies. Ages and abundances of the GCs are directly related to their formation and, subsequently, the formation of their host galaxy. We propose to observe GCs in two galaxies: NGC 4649 and NGC 3379. In Semester 2002B, we obtained 3.5 hrs of spectra on N4649 and we seek to complete these observations. We have obtained extremely deep stellar kinematic data for NGC 4649 (Hobby- Eberly Telescope), providing required constraints at intermediate radii. NGC 3379 is well studied at intermediate radii and these data will produce tight dynamical constraints for this important object.

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