Spectroscopic identification of white dwarfs in galactic clusters. VII. NGC 6633

Details Spectroscopic identification of white dwarfs in galactic clusters. VII. NGC 6633 Spectroscopic identification of white dwarfs in galactic clusters. VII. NGC 6633

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...285..451r&link_type=abstract

Astronomy and Astrophysics 285, 451-453 (1994)

Astronomy and Astrophysics

Astrophysics

14

Open Clusters And Associations: Ngc 6633, Stars: White Dwarfs

Scientific paper

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.

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