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2003A&A...406..893B - Astronomy and Astrophysics, volume 406893-898 (2003/8-2)
NGC 6738: Not a real open cluster.
BOECHE C., BARBON R., HENDEN A., MUNARI U. and AGNOLIN P.
Abstract (from CDS):
A photometric, astrometric and spectroscopic investigation of the poorly studied open cluster NGC 6738 has been performed in order to ascertain its real nature. NGC 6738 is definitely not a physical stellar ensemble: photometry does not show a defined mean sequence, proper motions and radial velocities are randomly distributed, spectro-photometric parallaxes range between 10 and 1600pc, and the apparent luminosity function is identical to that of the surrounding field. NGC 6738 therefore appears to be an apparent concentration of a few bright stars projected on patchy background absorption.
Abstract Copyright: ∼
Journal keyword(s): open clusters and associations: general - open clusters and associations: individual: NGC 6738
Nomenclature: Fig.1, Table 2: [BBH2003] NN (Nos 1-30).
Simbad objects: 31
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