Central Proper-Motion Kinematics of NGC 6752 | Zendy

G. A. Drukier | Zendy; C. D. Bailyn | Zendy; W. F. van Altena | Zendy; Terrence M. Girard | Zendy

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Central Proper-Motion Kinematics of NGC 6752

Author(s) -

G. A. Drukier,

C. D. Bailyn,

W. F. van Altena,

Terrence M. Girard

Publication year - 2003

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/374789

Subject(s) - globular cluster , physics , kinematics , velocity dispersion , motion (physics) , proper motion , stars , astrophysics , astronomy , classical mechanics , galaxy

We present proper motions derived from WFPC2 imaging for stars in the core ofthe peculiar globular cluster NGC 6752. The central velocity dispersion in bothcomponents of the proper motion is 12 km/s. We discuss the implications of thisresult as well as the intrinsic difficulties in making such measurements. Wealso give an alternative correction for the 34-row problem in the WFPC2 CCDs.Comment: 25 pages, 7 figures, 1 table included. Accepted for publication in A

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