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1994A&A...285..451R - Astronomy and Astrophysics, volume 285, 451-453 (1994/5-2)
Spectroscopic identification of white dwarfs in galactic clusters. VII. NGC 6633
REIMERS D. and KOESTER D.
Abstract (from CDS):
We have observed spectroscopically all seven white dwarf candidates found by Romanishin & Angel (1980) in the galactic cluster NGC 6633. One of these (No. 5) might be a DA white dwarf, but our observations are not good enough for a quantitative analysis and to discuss cluster membership. No. 6 is a DB/DC white dwarf - the first helium-rich object found in our study of clusters. However, this object is too bright to be a cluster member and must be a foreground object. The remaining 5 objects are O and B subdwarfs.
Abstract Copyright: ∼
Journal keyword(s): open clusters and associations: individual: NGC 6633 - stars: white dwarfs
Simbad objects: 9
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