2006A&A...445..545P


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.30CEST18:56:42

2006A&A...445..545P - Astronomy and Astrophysics, volume 445, 545-565 (2006/1-2)

Revisiting the population of Galactic open clusters.

PISKUNOV A.E., KHARCHENKO N.V., ROESER S., SCHILBACH E. and SCHOLZ R.-D.

Abstract (from CDS):

We present results of a study of the galactic open cluster population based on the all-sky catalogue ASCC-2.5 (I/280A) compiled from Tycho-2, Hipparcos and other catalogues. The sample of optical clusters from ASCC-2.5 is complete up to about 850pc from the Sun. The symmetry plane of the clusters' distribution is determined to be at Z0=-22±4pc, and the scale height of open clusters is only 56±3pc. The total surface density and volume density in the symmetry plane are Σ= 114kpc–2 and D(Z0)=1015kpc–3, respectively. We find the total number of open clusters in the Galactic disk to be of order of 105 at present. Fluctuations in the spatial and velocity distributions are attributed to the existence of four open cluster complexes (OCCs) of different ages containing up to a few tens of clusters. Members in an OCC show the same kinematic behaviour, and a narrow age spread. We find, that the youngest cluster complex, OCC 1 (logt<7.9), with 19° inclination to the Galactic plane, is apparently a signature of Gould's Belt. The most abundant OCC 2 complex has moderate age (logt≃8.45). The clusters of the Perseus-Auriga group, having the same age as OCC 2, but different kinematics are seen in breaks between Perseus-Auriga clouds. The oldest (logt≃8.85) and sparsest group was identified due to a large motion in the Galactic anticentre direction. Formation rate and lifetime of open clusters are found to be 0.23±0.03kpc–2Myr–1 and 322±31Myr, respectively. This implies a total number of cluster generations in the history of the Galaxy between 30 to 40. We estimate that less than about 10% of the total Galactic stellar disk population has ever passed an open cluster membership.

Abstract Copyright:

Journal keyword(s): Galaxy: disk - Galaxy: kinematics and dynamics - open clusters and associations: general - solar neighbourhood - Galaxy: stellar content - Galaxy: structure

Simbad objects: 125

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Number of rows : 125

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Cl Blanco 1 OpC 00 04 07 -29 50.0           ~ 238 0
2 NAME Casado Alessi 1 OpC 00 53 00 +49 33.0           ~ 25 1
3 NAME HIP 5671 Cluster MGr 01 13 50 +32 01.7           ~ 27 0
4 NGC 1039 OpC 02 42 05 +42 45.7           ~ 372 0
5 NGC 1027 OpC 02 42 43 +61 38.0   7.28 6.7     ~ 76 0
6 C 0307+630 OpC 03 11 48 +63 15.0     7.0     ~ 28 0
7 C 0312+598 OpC 03 16 11 +60 06.9           ~ 25 0
8 Cl Melotte 20 OpC 03 26 42 +48 48.0           ~ 753 0
9 C 0324+562 OpC 03 28 03.5 +56 27 30           ~ 28 0
10 NAME Per Arm PoG 03 30 +45.0           ~ 1268 0
11 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1084 0
12 NAME Per Region reg 03 37 00.0 +31 15 00           ~ 232 0
13 IC 348 OpC 03 44 34 +32 09.8           ~ 1235 1
14 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2686 0
15 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1223 0
16 NGC 1582 OpC 04 32 15.4 +43 50 43     7.0     ~ 26 0
17 [KPR2004b] 55 OpC 04 46 24 +55 15.0           ~ 23 0
18 [KPR2005] 12 OpC 04 49.9 +41 44           ~ 13 0
19 NAME 25 Ori Group OpC 05 24 36 +01 48.0           ~ 94 1
20 Cl Collinder 65 Cl* 05 26 06 +16 42.0           ~ 27 0
21 [KPR2005] 18 OpC 05 26 10 +00 49.2           ~ 28 0
22 [KPR2005] 19 OpC 05 27 47 -01 58.8           ~ 29 0
23 NAME HR 1833 Cluster OpC 05 28 44 +01 37.8           ~ 30 0
24 [KPR2005] 21 OpC 05 28 59 +03 39.0           ~ 32 0
25 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2006 1
26 Cl Collinder 69 OpC 05 35 06 +09 56.0     2.8     ~ 230 0
27 NGC 1981 OpC 05 35 09 -04 25.9     4.2     ~ 72 0
28 NGC 1977 SFR 05 35 16.0 -04 49 15           ~ 188 0
29 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1480 1
30 M 42 HII 05 35 17.3 -05 23 28           ~ 3747 0
31 NGC 1980 OpC 05 35 24 -05 54.9     2.5     ~ 87 0
32 Cl Collinder 70 OpC 05 35 30 -01 06.0           ~ 57 0
33 NAME Ori A MoC 05 38 -07.1           ~ 2693 0
34 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 490 0
35 C 0535+379 OpC 05 39 00 +37 56.0           ~ 26 0
36 NAME Gal Anticenter reg 05 46 +28.9           ~ 733 0
37 NGC 2184 OpC 06 11.2 -03 26           ~ 19 1
38 NAME HIP 29713 Cluster MGr 06 15 26 +03 50.7           ~ 26 0
39 [KPR2005] 23 OpC 06 20.3 +46 40           ~ 18 0
40 NGC 2232 OpC 06 27 15 -04 45.5           ~ 132 0
41 [KPR2005] 24 MGr 06 28 44 -07 01.2           ~ 15 0
42 C 0627+099 OpC 06 30 51 +09 56.6           ~ 27 0
43 C 0628+059 OpC 06 31 18 +05 55.0     5.4     ~ 25 0
44 [KPR2005] 34 OpC 07 10.5 +06 04           ~ 11 0
45 C 0712-310 OpC 07 15 20 -30 41.0     3.6     ~ 47 0
46 Cl Collinder 135 OpC 07 17 17 -36 49.0   2.69 2.1     ~ 62 0
47 Cl Collinder 140 OpC 07 24 27 -31 51.0           ~ 111 0
48 [KPR2005] 38 OpC 07 27.2 -05 33           ~ 9 0
49 NGC 2396 OpC 07 28 00 -11 43.0     7.4     ~ 21 0
50 NGC 2413 OpC 07 33.1 -13 02           ~ 13 1
51 C 0735-264 OpC 07 37 34 -26 30.0           ~ 21 0
52 C 0740-354 OpC 07 43.0 -35 36           ~ 14 0
53 NGC 2451A OpC 07 43 12 -38 24.0           ~ 82 0
54 NGC 2451B OpC 07 44 27 -37 40.0           ~ 62 0
55 NAME Herschel 1 OpC 07 47 02.00 +00 01 17.2           ~ 16 1
56 ESO 123-26 OpC 07 52.2 -60 22           ~ 14 0
57 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 218 0
58 NGC 2547 OpC 08 09 52.360 -49 10 35.01           ~ 316 0
59 Cl VDBH 23 OpC 08 14 04.8 -36 21 36           ~ 30 0
60 C 0837-438 OpC 08 39.2 -44 03           ~ 18 0
61 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1249 0
62 IC 2391 OpC 08 40 32 -53 02.0           ~ 722 0
63 NAME eta Cha Association MGr 08 42 06 -79 01.6           ~ 311 0
64 Cl Trumpler 10 OpC 08 47 54 -42 27.0           ~ 147 0
65 Ass Vel OB 1 As* 08 49.9 -45 00           ~ 94 0
66 Cl Platais 8 OpC 09 09 30 -59 07.7           ~ 45 0
67 [KPR2005] 51 OpC 09 18.0 -69 41           ~ 15 0
68 Cl Turner 5 MGr 09 33 51 -36 36.9           ~ 26 0
69 [KPR2005] 59 OpC 10 20.2 -57 39           ~ 14 0
70 NGC 3228 OpC 10 21 22 -51 43.7           ~ 63 0
71 C 1027-585 OpC 10 28 54 -58 47.0           ~ 22 0
72 [KPR2004b] 246 OpC 10 29 09 -56 47.3           ~ 15 0
73 C 1028-538 OpC 10 30 17 -54 06.9           ~ 14 0
74 Cl Alessi 5 OpC 10 42 54 -61 12.0           ~ 30 0
75 IC 2602 OpC 10 42 58 -64 24.0           ~ 556 0
76 NGC 3532 OpC 11 05 39 -58 45.2           ~ 268 0
77 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1030 0
78 Cl Loden 915 OpC 13 34.1 -59 15           ~ 15 0
79 [KPR2005] 74 OpC 13 35.8 -58 49           ~ 9 0
80 C 1356-581 OpC 13 59 39 -58 20.0           ~ 15 0
81 C 1402-594 OpC 14 05 42.00 -59 42 00.0           ~ 21 0
82 ESO 175-6 OpC 14 18 32 -56 55.1           ~ 15 0
83 C 1440+697 Cl* 14 40.9 +69 34           ~ 25 0
84 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 432 1
85 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 384 0
86 [KPR2005] 83 OpC 15 50.2 -52 48           ~ 12 0
87 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1136 1
88 NGC 6124 OpC 16 25 20 -40 39.2   6.70 5.8     ~ 55 0
89 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3058 0
90 NGC 6281 OpC 17 04 41 -37 59.1           ~ 102 0
91 [KPR2005] 89 Cl* 17 23.3 -62 38           ~ 9 0
92 Cl Alessi 9 OpC 17 44 00 -47 00.0           ~ 28 0
93 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11702 0
94 IC 4665 OpC 17 46 18 +05 43.0           ~ 315 0
95 NGC 6469 OpC 17 53.2 -22 19     8.2     ~ 20 0
96 M 23 OpC 17 57 04 -18 59.1   6.03 5.5     ~ 107 0
97 NAME Aql Rift DNe 18 32 -01.0           ~ 236 1
98 [KPR2005] 99 OpC 18 49 05 -18 43.8           ~ 17 0
99 NAME del Lyr Cluster OpC 18 53 30 +36 55.0   4.58 3.8     ~ 47 0
100 NAME Sgr Arm PoG 19 00 -30.0           ~ 527 1
101 NGC 6738 OpC 19 01.3 +11 37     8.3     ~ 18 0
102 [KPR2005] 101 OpC 19 13 37 +36 19.8           ~ 19 0
103 NGC 6793 OpC 19 23 18 +22 08.4           ~ 26 0
104 NGC 6800 OpC 19 27.1 +25 08           ~ 17 0
105 C 1933+251 OpC 19 35.8 +25 13     5.3     ~ 29 0
106 Cl Alessi 44 OpC 19 42 33 +01 31.4           ~ 16 0
107 NGC 6828 OpC 19 50 17 +07 54.2           ~ 22 0
108 [KPR2005] 109 OpC 19 54.0 +34 35           ~ 11 0
109 C 2008+336 OpC 20 10 00 +33 46.0           ~ 34 0
110 C 2027+392 MGr 20 28.8 +39 16           ~ 22 0
111 NGC 6991 OpC 20 54 54 +47 25.0           ~ 34 2
112 NGC 7058 MGr 21 21.9 +50 49           ~ 17 0
113 NGC 7092 OpC 21 31 48 +48 26.0           ~ 189 0
114 [KPR2005] 115 OpC 21 56 53 +51 28.8           ~ 18 0
115 NGC 7209 OpC 22 05 07 +46 29.0   8.24 7.7     ~ 109 0
116 [KPR2005] 123 MGr 22 42 36 +54 15.6           ~ 21 0
117 [KPR2005] 124 OpC 22 48.1 +46 15           ~ 18 0
118 [KPR2005] 127 OpC 23 08 24 +64 51.0           ~ 19 0
119 Cl Stock 12 OpC 23 35.6 +52 41           ~ 22 0
120 NAME Gould Belt PoG ~ ~           ~ 719 1
121 NAME Aur-Per reg ~ ~           ~ 6 0
122 NAME Vulpecula Region reg ~ ~           ~ 28 0
123 NAME Hyades Moving Group MGr ~ ~           ~ 240 0
124 NAME Sgr Region reg ~ ~           ~ 37 0
125 NAME Vela Field reg ~ ~           ~ 152 0

    Equat.    Gal    SGal    Ecl

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2020.09.30-18:56:42

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