Structural parameters for globular clusters in M31 and generalizations for the fundamental plane

Details Structural parameters for globular clusters in M31 and generalizations for the fundamental plane Structural parameters for globular clusters in M31 and generalizations for the fundamental plane

2007-04-16

arxiv.org/abs/0704.2057v1

Astron.J.133:2764-2786,2007

Astronomy and Astrophysics

Astrophysics

AJ in press; 59 pages including 16 figures

Scientific paper

10.1086/516777

The structures of globular clusters (GCs) reflect their dynamical states and past histories. High-resolution imaging allows the exploration of morphologies of clusters in other galaxies. Surface brightness profiles from new Hubble Space Telescope observations of 34 globular clusters in M31 are presented, together with fits of several different structural models to each cluster. M31 clusters appear to be adequately fit by standard King models, and do not obviously require alternate descriptions with relatively stronger halos, such as are needed to fit many GCs in other nearby galaxies. The derived structural parameters are combined with corrected versions of those measured in an earlier survey to construct a comprehensive catalog of structural and dynamical parameters for M31 GCs with a sample size similar to that for the Milky Way. Clusters in M31, the Milky Way, Magellanic Clouds, Fornax dwarf spheroidal and NGC 5128 define a very tight fundamental plane with identical slopes. The combined evidence for these widely different galaxies strongly reinforces the view that old globular clusters have near-universal structural properties regardless of host environment.

Affiliated with

Also associated with

No associations

Rating

Structural parameters for globular clusters in M31 and generalizations for the fundamental plane 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 Structural parameters for globular clusters in M31 and generalizations for the fundamental plane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structural parameters for globular clusters in M31 and generalizations for the fundamental plane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-44852