Central Proper-Motion Kinematics of NGC 6752

Details Central Proper-Motion Kinematics of NGC 6752 Central Proper-Motion Kinematics of NGC 6752

2003-02-19

arxiv.org/abs/astro-ph/0302386v1

Astron.J.125:2559,2003

Astronomy and Astrophysics

Astrophysics

25 pages, 7 figures, 1 table included. Accepted for publication in AJ

Scientific paper

10.1086/374789

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.

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