Central Proper-Motion Kinematics of NGC 6752
Astrophysics
2008-11-26 v1
Abstract
We present proper motions derived from WFPC2 imaging for stars in the core of the peculiar globular cluster NGC 6752. The central velocity dispersion in both components of the proper motion is 12 km/s. We discuss the implications of this result as well as the intrinsic difficulties in making such measurements. We also give an alternative correction for the 34-row problem in the WFPC2 CCDs.
Cite
@article{arxiv.astro-ph/0302386,
title = {Central Proper-Motion Kinematics of NGC 6752},
author = {G. A. Drukier and C. D. Bailyn and W. F. Van Altena and T. M. Girard},
journal= {arXiv preprint arXiv:astro-ph/0302386},
year = {2008}
}
Comments
25 pages, 7 figures, 1 table included. Accepted for publication in AJ