1994A&A...285..451R

Query : 1994A&A...285..451R

1994A&A...285..451R - Astronomy and Astrophysics, volume 285451-453 (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.

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Journal keyword(s): open clusters and associations: individual: NGC 6633 - stars: white dwarfs

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
2 Cl* NGC 6633 RA 1 WD? 18 26 14.9035939440 +06 29 01.375138428   18.8   18.6   sdOB: 4 0
3 Cl* NGC 6633 RA 2 HS? 18 26 17.4592303416 +06 22 32.780014752   18.5   19.0   sdOB: 3 0
4 Cl* NGC 6633 RA 3 HS? 18 26 32.5286482152 +06 16 34.356025560   18.7   19.1   sdOB: 2 0
5 Cl* NGC 6633 RA 4 HS? 18 27 03.0246524712 +06 24 28.113373008   18.08 17.96 16.78   sdOB: 4 0
6 Cl* NGC 6633 RA 5 * 18 27 10.42 +06 26 16.1           ~ 2 0
7 Cl* NGC 6633 RA 6 WD* 18 27 12.2259464676 +06 21 35.614276471   17.0 16.93 16.9   DB 10 0
8 Cl* NGC 6633 RA 7 HS* 18 27 13.6350814968 +06 19 54.296173488   16.9 17.14 16.8   sdOB 4 0
9 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0

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