1995A&A...302...86S


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.09CEST11:09:09

1995A&A...302...86S - Astronomy and Astrophysics, volume 302, 86-89 (1995/10-1)

Probable binary open star clusters in the Galaxy.

SUBRAMANIAM A., GORTI U., SAGAR R. and BHATT H.C.

Abstract (from CDS):

The existence of double/binary clusters in the Magellanic Clouds is fairly well established, whereas only one such pair, h + χ Persei, is known in the Galaxy. From the catalogues of open clusters of the Galaxy, we have identified 18 probable pairs of clusters (with known distances), with spatial separations less than 20pc. The tidal disruption timescales for these pairs, due to Galactic differential rotation are calculated, using cluster data where available or by assuming typical values. In some cases, these timescales are larger than the average open cluster lifetime, ≃108yr. About 8% of open clusters appear to be members of binary systems, and hence binary cluster systems may not be very uncommon in the Galaxy.

Abstract Copyright:

Journal keyword(s): open clusters: general - galaxies: star clusters

Simbad objects: 39

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Number of rows : 39

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 C 0029+628 OpC 00 32 03 +63 10.9   9 8.5     ~ 32 0
2 NGC 146 OpC 00 33.1 +63 18   9.59 9.1     ~ 51 0
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9783 1
4 NGC 869 OpC 02 19 00 +57 07.7           ~ 438 0
5 NGC 884 OpC 02 22 23 +57 07.5           ~ 454 0
6 NGC 1513 OpC 04 10.6 +49 31   8.71 8.4     ~ 45 0
7 NGC 1545 OpC 04 20 57 +50 15.2   7.2 6.2     ~ 90 0
8 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15340 1
9 NGC 1907 OpC 05 28 05 +35 19.5   8.87 8.2     ~ 106 2
10 M 38 OpC 05 28 43 +35 51.3   6.69 6.4     ~ 133 2
11 NGC 1981 OpC 05 35 09 -04 25.9     4.2     ~ 76 0
12 Cl Collinder 70 OpC 05 35 30 -01 06.0           ~ 58 0
13 NGC 2251 OpC 06 34 38 +08 22.0   7.69 7.3     ~ 100 0
14 NGC 2264 OpC 06 40 58 +09 53.7           ~ 1625 0
15 C 0701-060 OpC 07 04 07 -06 07.8           ~ 13 0
16 NGC 2383 OpC 07 24 40 -20 56.9   8.88 8.4     ~ 55 0
17 NGC 2384 OpC 07 25 10 -21 01.3   7.47 7.4     ~ 67 0
18 C 0750-262 OpC 07 52 39 -26 22.8   10.09 9.3     ~ 42 1
19 C 0750-261 OpC 07 52 47 -26 17.0   9.60 9.4     ~ 47 0
20 NGC 2645 OpC 08 39 03 -46 14.0           ~ 57 0
21 C 0839-461 OpC 08 41 40 -46 16.0   10.10 9.5     ~ 30 0
22 NGC 3247 Cl* 10 24 17.3 -57 45 36   7.99 7.6     ~ 36 0
23 IC 2581 OpC 10 27 29 -57 37.0   4.79 4.3     ~ 115 0
24 Cl Hogg 10 OpC 11 10 44 -60 23.1           ~ 42 0
25 Cl Hogg 11 OpC 11 11 32 -60 22.3   8.21 8.1     ~ 32 0
26 Cl Basel 18 OpC 13 28.1 -62 21   8.50 8.2     ~ 31 1
27 C 1326-639 OpC 13 30 07 -64 12.0   9.10 8.7     ~ 19 0
28 NGC 6152 OpC 16 32.7 -52 38     8.1     ~ 24 0
29 NGC 6208 OpC 16 49 28 -53 43.7   8.06 7.2     ~ 66 0
30 NGC 6383 OpC 17 34 48 -32 34.0   5.56 5.5     ~ 141 0
31 Cl Trumpler 28 OpC 17 37 00 -32 29.0           ~ 43 0
32 NGC 6755 OpC 19 07 49 +04 16.0   8.60 7.5     ~ 70 0
33 NGC 6756 OpC 19 08 45 +04 43.0     10.6     ~ 29 0
34 NGC 6997 OpC 20 56 31 +44 36.6     10.0     ~ 26 1
35 C 2101+443 OpC 21 03 04 +44 33.6     8.7     ~ 16 0
36 NGC 7031 OpC 21 07 06 +50 52.5   10.01 9.1     ~ 48 1
37 NGC 7086 OpC 21 30 27 +51 36.0   9.25 8.4     ~ 65 1
38 NGC 7429 OpC 22 55 53 +59 57.6           ~ 11 0
39 Cl Mrk 50 OpC 23 15 15 +60 26.0   9.09 8.5     ~ 45 0

    Equat.    Gal    SGal    Ecl

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2021.05.09-11:09:09

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