2022A&A...666A..75S

Query : 2022A&A...666A..75S

2022A&A...666A..75S - Astronomy and Astrophysics, volume 666A75 (2022/10-1)

Binary open clusters in the Gaia data.

SONG F., ESAMDIN A., HU Q. and ZHANG M.

Abstract (from CDS):


Context. Observations indicate that the fraction of potential binary star clusters in the Milky Way is either the same or lower than that of the Magellanic Clouds. The unprecedented precision in the parallax measurements by Gaia has allowed for the discovery of a growing number of new binary open clusters (OCs).
Aims. We aim to survey the candidates of truly binary open clusters that are formed simultaneously, using information from the Gaia database.
Methods. Based on the most recent catalog of open clusters, we investigated the interactions of adjacent binary open clusters in our Galaxy within separations of 50 pc. We compared their coordinates, proper motions, parallaxes, and color-magnitude diagrams (CMDs) via binary plots for all candidate pairs. The candidates of truly binary open clusters are selected on the basis of their common proper motions and consistent behaviors in the CMDs of different clusters that are limited to a separation of 50 pc.
Results. About ten pairs of the selected binary open clusters appear to be the same clusters, based on evidence that almost half of the cluster members are shared. Fourteen pairs are possibly true binaries, implying that they may come from the same clouds, among which five pairs are newly discovered. In addition, two clusters, UBC 46 and UBC 192, were found to be part of the stellar complex LISCA I. Our results confirm that OCs born in groups are usually composed of young open clusters.

Abstract Copyright: © F. Song et al. 2022

Journal keyword(s): open clusters and associations: general - stars: evolution - galaxies: star clusters: general

Simbad objects: 63

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Number of rows : 63
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 Cl Stock 20 OpC 00 25 16.5 +62 37 45           ~ 37 0
2 UBC 410 OpC 00 27 59.6 +62 55 39           ~ 8 0
3 UBC 46 OpC 02 14 39.3 +57 18 44           ~ 10 0
4 NGC 869 OpC 02 18 57.0 +57 08 02           ~ 504 0
5 [DVT2021] LISCA I As* 02 22 07.0 +57 09 48           ~ 7 0
6 NGC 884 OpC 02 22 15.7 +57 08 59           ~ 503 0
7 UBC 192 OpC 02 28 27.9 +57 08 48           ~ 11 0
8 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
9 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
10 [FSR2007] 0686 OpC 04 25 25 +46 05.9           ~ 19 0
11 UBC 55 OpC 04 25 28.6 +46 06 55           ~ 9 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
13 Cl Stock 8 OpC 05 27 54.1 +34 28 41           ~ 93 0
14 Cl Alicante 12 OpC 05 28 21.7 +34 46 40           ~ 32 0
15 UBC 17b OpC 05 32 54.9 -01 41 18           ~ 22 0
16 Cl Gulliver 6 OpC 05 33 01.0 -01 41 27           ~ 39 0
17 Cl Gulliver 56 OpC 06 21 25.6 +26 55 13           ~ 15 0
18 UBC 73 OpC 06 21 29.1 +26 54 53           ~ 12 0
19 Cl Alessi 36 OpC 07 06 57.9 -37 43 27           ~ 38 0
20 Cl Collinder 135 OpC 07 17 23.6 -36 57 23           ~ 124 0
21 NGC 2362 OpC 07 18 41.9 -24 57 08           ~ 428 0
22 [FSR2007] 1297 OpC 07 23 56 -25 52.7           ~ 11 0
23 UBC 462 OpC 07 55 23.6 -24 02 39           ~ 8 0
24 UBC 461 OpC 07 56 57.6 -23 49 22           ~ 8 0
25 Casado 10 OpC 08 02.3 -32 08           ~ 3 0
26 Casado 9 OpC 08 03.0 -32 15           ~ 3 0
27 NGC 2645 OpC 08 39 07.9 -46 13 36           ~ 76 0
28 SAI 92 OpC 08 39 39.1 -46 18 49           ~ 5 0
29 [LP2019] 58 Cl* 08 39 50 -46 21.8           ~ 5 0
30 Cl Pismis 8 OpC 08 41 36.2 -46 16 01   10.10 9.5     ~ 47 0
31 NGC 2659 OpC 08 42 32.1 -44 59 55           ~ 45 0
32 Cl Bochum 7 OpC 08 44 28.2 -45 55 19   6.94 6.8     ~ 52 0
33 ESO 313-13 OpC 08 44 51.8 -41 17 02   7.01 6.7     ~ 95 0
34 Cl Gulliver 5 OpC 08 50 26.2 -45 28 17           ~ 16 0
35 Cl Alessi 43 OpC 08 50 27.4 -41 44 30           ~ 56 0
36 Cl VDBH 56 OpC 08 57 37.0 -43 09 02           ~ 48 0
37 NGC 3572 OpC 11 10 32.2 -60 17 23           ~ 96 0
38 Cl Hogg 10 OpC 11 10 39 -60 23.1           ~ 53 0
39 Cl Collinder 249 OpC 11 38 40.1 -63 23 27           ~ 38 0
40 IC 2948 OpC 11 39 29.6 -63 26 59           ~ 39 0
41 Cl Hogg 22 OpC 16 46 34.1 -47 06 12           ~ 81 0
42 UBC 549 OpC 16 48 31.3 -46 57 34           ~ 8 0
43 ESO 332-11 OpC 16 55 38.3 -40 45 06           ~ 21 0
44 Cl VDBH 205 OpC 16 56 21.7 -40 38 01           ~ 39 0
45 Cl Antalova 2 OpC 17 29 52.6 -32 32 55   9.01 8.8     ~ 22 0
46 Casado 28 OpC 17 32.9 -02 22           ~ 3 0
47 NGC 6383 OpC 17 34 41.6 -32 34 27           ~ 168 0
48 Casado 61 OpC 17 37.2 -01 03           ~ 3 0
49 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
50 Cl Collinder 394 OpC 18 52 34.9 -20 10 39     6.3     ~ 96 0
51 NGC 6716 OpC 18 53 54.4 -19 57 44   7.70 7.5     ~ 85 0
52 Teutsch 8 OpC 20 02 23.8 +35 18 38           ~ 21 0
53 [FSR2007] 0198 OpC 20 02 24.4 +35 39 54           ~ 30 0
54 NGC 6871 OpC 20 06 07.9 +35 46 45   5.43 5.2     ~ 237 0
55 Cl Biurakan 2 OpC 20 09 12.4 +35 29 23           ~ 61 0
56 UBC 167 OpC 21 39 08.6 +62 19 55           ~ 9 0
57 UBC 10a OpC 21 39 24.2 +62 16 02           ~ 13 0
58 UBC 392 OpC 22 24 25.3 +64 55 14           ~ 10 0
59 UPK 194 OpC 22 25 15.2 +64 57 56           ~ 11 0
60 RSG 7 OpC 22 56 51.0 +59 26 36           ~ 34 0
61 RSG 8 OpC 22 58 57.1 +59 23 34           ~ 35 0
62 NAME Cl Negueruela 1 OpC 23 47 24.1 +63 13 11           ~ 27 0
63 DSH J2347.9+6259 OpC 23 47 57.0 +62 59 38           ~ 26 0

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