1998NewA....3..583O

Query : 1998NewA....3..583O

1998NewA....3..583O - New Astronomy, 3, 583-599 (1998/December-0)

The Coma Berenices star cluster and its moving group.

ODENKIRCHEN M., SOUBIRAN C. and COLIN J.

Abstract (from CDS):

We report on the analysis of astrometric and photometric data from Hipparcos, Tycho and the ACT catalogue in a 1200 sq. degree field around the nearby open star cluster in Coma Berenices and infer the characteristic features of this cluster. From a sample of 51 kinematic members we derive the cluster's distance, size and spatial structure as well as its stellar content, mass and age. We find that the cluster consists of an elliptical core-halo system with major axis parallel to the direction of galactic motion, and of a moving group of extratidal stars. The latter have tangential distances ≥ 10 pc from the cluster center, but have the same distance from the Sun, the same motion and the same age as the stars in the core and halo. The luminosity function of the core-halo system steeply declines beyond absolute magnitude M_V=4.5, but that of the moving group rises towards fainter magnitudes and suggests the existence of further low-mass members below the current magnitude limit. The cloud of extratidal stars witnesses the process of dissolution of the cluster.

Abstract Copyright: ∼

Journal keyword(s): Open clusters and associations: individual: Mel 111 - Galaxy: kinematics and dynamics

Simbad objects: 53

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Number of rows : 53
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 Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
2 HD 105805 Em* 12 10 46.0951571112 +27 16 53.421950208   6.110 5.987     A5V 100 0
3 Cl Melotte 111 OpC 12 11 54.9 +25 16 36           ~ 520 0
4 HD 106293 SB* 12 13 43.9003054608 +22 53 16.783110456   8.48 8.08     F5V 50 0
5 HD 106691 Em* 12 16 08.3755905912 +25 45 37.337623776   8.46 8.08     F3 113 0
6 HD 106946 Em* 12 17 50.9063952576 +25 34 16.838682780   8.19 7.87     F2Vs 110 0
7 HD 107053 * 12 18 29.0759321952 +32 44 56.028583824   6.901 6.668     A5V 52 0
8 HD 107067 SB* 12 18 36.1809470880 +23 07 12.274326840   9.17 8.70     F8 95 0
9 HD 107132 V* 12 19 01.4794667088 +24 50 46.186912968   9.26 8.81     F7Vv 85 0
10 V* FM Com dS* 12 19 02.0250151224 +26 00 30.060577116   6.605 6.433     A6:IV-Vmv 165 0
11 * 8 Com * 12 19 19.1929880208 +23 02 04.821806040   6.416 6.220     kA7hF2mF3 147 0
12 HD 107214 Em* 12 19 28.3538047272 +24 17 03.210646596   9.61 9.03     G0V 88 0
13 * 10 Com Em* 12 19 50.6242729536 +28 27 51.675976548   6.812 6.617     kA5mA7(V) 129 0
14 HD 107399 Em* 12 20 45.5706181896 +25 45 57.104302932   9.62 9.00     G0 123 0
15 V* KU Com dS* 12 21 26.7390932544 +24 59 49.298164296   7.64 7.38     Am 130 0
16 HD 107583 Em* 12 21 49.0266762216 +26 32 56.750515116   9.89 9.31     G0V 109 0
17 HD 107611 Em* 12 21 56.1616739640 +27 18 34.236329472   8.95 8.50     F5 124 0
18 HD 107685 * 12 22 24.7563796200 +22 27 50.908932288   8.98 8.54     F6 98 0
19 * 12 Com SB* 12 22 30.3113907816 +25 50 46.167660348 5.56 5.30 4.81 4.34 4.01 F6III+A3V 196 0
20 HD 107793 SB* 12 23 08.3994739320 +25 51 04.947925896   9.64 9.09     F9V 123 0
21 HD 107877 Em* 12 23 41.0100897456 +26 58 47.754411960   8.75 8.35     F5 115 0
22 BD+27 2121 SB* 12 23 41.8281760152 +26 36 05.398555248   9.93 9.34     G5.5 55 0
23 HD 107935 SB* 12 24 03.4621039848 +25 51 04.359102696   6.917 6.693     Am 94 0
24 HD 108007 ** 12 24 26.80314 +25 34 56.6618   6.79 6.55     A9V(n)kF2mF0 147 0
25 V* IL Com RS* 12 25 02.2563809088 +25 33 38.383306020   8.63 8.14     F8 161 0
26 HD 108154 * 12 25 22.4975294904 +23 13 44.725774908   8.99 8.56     F5 100 0
27 HD 108226 Em* 12 25 51.9521131776 +26 46 36.015060288   8.76 8.34     F5 113 0
28 * 14 Com * 12 26 24.0644226936 +27 16 05.659806648 5.40 5.22 4.95 4.70 4.55 F1IV:npS_sh 167 0
29 * 16 Com * 12 26 59.2962947904 +26 49 32.526134544   5.045 4.959   4.93 A4V 169 0
30 HD 108486 EB* 12 27 38.3636590224 +25 54 43.580490048   6.835 6.654     A1IV-VSrSi 138 0
31 BD+29 2290 * 12 27 48.2946577200 +28 11 39.891263784   10.40 9.6     G5.4 40 0
32 BD+28 2119 Em* 12 28 21.1109962896 +28 02 26.086057476   11.24 10.43     G9.8 34 0
33 * 21 Com a2* 12 31 00.5605002264 +24 34 01.797245328   5.496 5.436     A2pv 295 0
34 HD 108976 Em* 12 31 03.0979192032 +27 43 49.221073380   9.03 8.57     F6V 116 0
35 HD 109069 * 12 31 50.5548514464 +29 18 50.908640220   7.86 7.55     F0V 62 0
36 BD+36 2278 Em* 12 32 31.0724294328 +35 19 52.311815004   10.14 9.7     G5 57 0
37 * 22 Com * 12 33 34.2193153104 +24 16 58.739975472   6.363 6.243     A4Vm 164 0
38 HD 109483 Em* 12 34 54.2985164088 +27 27 20.207769624   9.60 9.0     G4.8 38 0
39 C 1232+365 OpC 12 35 01 +36 22.3     6.3     ~ 16 0
40 HD 111154 SB* 12 47 06.7303883088 +22 37 00.582158676   8.96 8.40     G0V 53 0
41 BD+36 2312 * 12 50 39.2993332080 +35 55 38.368041060   11.23 10.5     G6 8 0
42 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 443 1
43 HD 111878 Em* 12 52 11.6160381936 +25 22 24.579304968   9.35 8.83 8.6   F7 67 0
44 HD 113037 * 13 00 35.1763697736 +23 39 06.310536840   8.68 8.23     F5V 59 0
45 HD 114400 * 13 09 55.2637741464 +33 43 18.706075572   10.27 9.54     G0 31 0
46 HD 114231 * 13 09 56.4465503352 -47 33 20.606286060   9.09 7.52     K4III 12 1
47 TYC 2534-1715-1 * 13 11 28.0555406616 +33 46 50.761041816   11.29 10.54     ~ 5 0
48 BD+21 2514 * 13 18 47.0169764088 +20 15 04.369660848   10.86 10.08 10.006   G5 17 0
49 BD+38 2436 * 13 21 11.1902844504 +37 48 48.764162592   9.60 9.10     M2 21 0
50 BD+16 2505 SB* 13 24 38.0189111376 +16 02 19.254096996   10.25 9.64     G0 6 0
51 BD+25 2631 * 13 24 41.3796058416 +24 45 40.244207328   11.3 10.49     ~ 11 0
52 HD 116706 * 13 25 06.6781079208 +23 51 15.912465444   5.829 5.745     A3IV 77 0
53 BD+26 2461 * 13 25 39.3687398352 +25 40 55.876015092   9.69 9.14     F8 38 0

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