1994A&A...290L..17P


Query : 1994A&A...290L..17P

1994A&A...290L..17P - Astronomy and Astrophysics, volume 290L17-20 (1994/10-1)

Optical identification of two soft ROSAT sources in the old open cluster M67.

PASQUINI L., BELLONI T. and ABBOTT T.M.C.

Abstract (from CDS):

We have obtained low-resolution spectra of two soft ROSAT sources in the field of the old (∼4 Gyrs) open cluster M67. One of the sources is an AM Her type cataclysmic variable (CV), and the other is a weak-lined DA white dwarf (WD). Both sources are located in the central region of M67 and they are probable members of the cluster. The AM Her is the first spectroscopically confirmed AM Her system found associated with an open cluster and the WD is the only degenerate star known in M67.

Abstract Copyright: ∼

Journal keyword(s): cataclysmic variables - white dwarfs - open clusters and associations: individual: M67

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 * alf CMa B WD* 06 45 09.3041925037 -16 43 00.724740067   8.41 8.44     DA1.9 563 1
2 V* VV Pup CV* 08 15 06.8009599464 -19 03 17.765706024     13.90     M7V 413 0
3 Cl* NGC 2682 ES I-206 * 08 51 19.8888480624 +11 48 37.658326716   17.931 16.876 15.98 15.779 ~ 6 0
4 LB 6339 WD* 08 51 19.9088482234 +11 48 40.816076731 17.603 18.499 18.612     DAwk 23 0
5 Cl* NGC 2682 SAND 1019 SB* 08 51 23.2771502112 +11 48 26.560354284 15.407 15.15 14.440 13.842 13.338 G0V 34 0
6 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
7 V* EU Cnc CV* 08 51 27.1835851536 +11 46 56.996141700   21.93 21.75     ~ 46 0
8 Cl* NGC 2682 SAND 996 SB* 08 51 28.3425078672 +11 46 49.488364668 16.323 15.86 14.972 14.448 13.977 G5V 28 0
9 BD+12 1926 RG* 08 51 29.9058258360 +11 47 16.870629444   11.004 9.555 9.360 8.36 K3III 155 0

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