The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A)

Details The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A) The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A)

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop...70h&link_type=abstract

NOAO Proposal ID #2007A-0070

Computer Science

Scientific paper

We propose to carry out a comprehensive new dynamical study of the globular cluster system of NGC 5128 (Centaurus A), the nearest giant E galaxy. A key component of our proposal is a completely new catalog of globular cluster candidates that we have generated from a wide-field (1.4 sq deg) R-band imaging survey of NGC 5128 taken April 2006 with Magellan/IMACS under remarkable 0.45" seeing. We have used this new imaging survey to isolate a list of GC candidates that is far more precise, complete, and contamination-free than in any previous work. As spectroscopic followup, we will use the CTIO 4m + Hydra to measure velocities for 800 new GC candidates, of which 400 or more should be bona fide clusters. Our new data will double the known NGC 5128 GC sample and will eliminate the spatial biases inherent in all previous studies of this unique system. More importantly, the large new velocity database will be the springboard for a superior dynamical analysis of the galaxy and the halo velocity field. This work will allow us to define later programs aimed at detailed abundance and age distribution profiles for the system, and systematic trends with metallicity, that will closely connect with galaxy formation models. In addition, our GC database will rank among the largest ever assembled for a single galaxy, not only enabling us to test galaxy formation models but also providing a benchmark dataset in globular cluster research.

Affiliated with

Also associated with

No associations

Rating

The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Velocity Field of the Globular Cluster System in NGC 5128 (Cen A) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1155877