2007A&A...467.1065M


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.19CET07:31:39

2007A&A...467.1065M - Astronomy and Astrophysics, volume 467, 1065-1074 (2007/6-1)

CCD BV survey of 42 open clusters.

MACIEJEWSKI G. and NIEDZIELSKI A.

Abstract (from CDS):

We present results of a photometric survey whose aim was to derive structural and astrophysical parameters for 42 open clusters. While our sample is definitively not representative of the total open cluster sample in the Galaxy, it does cover a wide range of cluster parameters and is uniform enough to allow for simple statistical considerations. BV wide-field CCD photometry was obtained for open clusters for which photometric, structural, and dynamical evolution parameters were determined. The limiting and core radii were determined by analyzing radial density profiles. The ages, reddenings, and distances were obtained from the solar metallicity isochrone fitting. The mass function was used to study the dynamical state of the systems, mass segregation effect and to estimate the total mass and number of cluster members. This study reports on the first determination of basic parameters for 11 out of 42 observed open clusters. The angular sizes for the majority of the observed clusters appear to be several times larger than the catalogue data indicate. The core and limiting cluster radii are correlated and the latter parameter is 3.2 times larger on average. The limiting radius increases with the cluster's mass, and both the limiting and core radii decrease in the course of dynamical evolution. For dynamically not advanced clusters, the mass function slope is similar to the universal IMF slope. For more evolved systems, the effect of evaporation of low-mass members is clearly visible. The initial mass segregation is present in all the observed young clusters, whereas the dynamical mass segregation appears in clusters older than about log(age)=8. Low-mass stars are deficient in the cores of clusters older than log(age)=8.5 and not younger than one relaxation time.

Abstract Copyright:

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

Simbad objects: 43

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Number of rows : 43

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 C 0007+609 OpC 00 10 03 +61 11.0           ~ 15 0
2 C 0019+641 OpC 00 22 04 +64 23.0   21.29 19.26     ~ 19 0
3 C 0029+628 OpC 00 32 03 +63 10.9   9 8.5     ~ 31 0
4 NGC 146 OpC 00 33.1 +63 18   9.59 9.1     ~ 48 0
5 Cl Dias 1 OpC 00 42 37 +64 03.6           ~ 9 0
6 C 0040+639 OpC 00 43 52 +64 10.8   10.68 10.3     ~ 13 0
7 Cl Berkeley 4 OpC 00 45 08.0740 +64 23 31.079           ~ 19 0
8 NAME Skiff J0058+68.4 OpC 00 58 24 +68 28.0           ~ 9 0
9 NGC 559 OpC 01 29 31 +63 18.1   9.85 9.5     ~ 53 0
10 NGC 884 OpC 02 22 23 +57 07.5           ~ 438 0
11 C 0225+615 OpC 02 29 10 +61 47.1           ~ 14 0
12 C 0229+596 OpC 02 33 32 +59 52.5           ~ 11 0
13 NGC 1027 OpC 02 42 43 +61 38.0   7.28 6.7     ~ 74 0
14 C 0311+525 OpC 03 14 46 +52 41.8           ~ 49 0
15 C 0324+562 OpC 03 28 03.5 +56 27 30           ~ 24 0
16 Cl Berkeley 9 OpC 03 32 39 +52 39.0           ~ 14 0
17 Cl Berkeley 10 OpC 03 39 36 +66 29.4           ~ 14 0
18 C 0343+589 OpC 03 47 48 +59 03.0   9.01 8.4     ~ 28 0
19 NGC 1513 OpC 04 10.6 +49 31   8.71 8.4     ~ 40 0
20 Cl Berkeley 67 OpC 04 37 48 +50 46.5           ~ 13 0
21 Cl Berkeley 13 OpC 04 55 46 +52 48.9           ~ 8 0
22 C 0453+287 OpC 04 57.0 +28 47           ~ 10 0
23 Cl Berkeley 15 OpC 05 02 07 +44 30.7           ~ 15 0
24 NGC 1798 OpC 05 11 38 +47 41.7           ~ 43 0
25 Cl Berkeley 71 OpC 05 40 57 +32 16.0           ~ 20 0
26 NGC 2126 OpC 06 02 36 +49 52.3           ~ 26 0
27 NGC 2168 OpC 06 08 54 +24 20.0           ~ 449 0
28 NGC 2192 OpC 06 15 17 +39 52.1     10.9     ~ 32 0
29 NGC 2266 OpC 06 43 20 +26 59.1     9.5     ~ 50 0
30 Cl King 25 OpC 19 24 36.0 +13 42 06           ~ 9 0
31 Cl Czernik 40 OpC 19 42.6 +21 11           ~ 10 0
32 Cl Czernik 41 OpC 19 51 01.00 +25 16 07.0           ~ 9 0
33 NGC 6885 OpC 20 12 01 +26 28.7   8.71 8.1     ~ 54 0
34 IC 4996 OpC 20 16 30 +37 38.0   7.87 7.3     ~ 157 0
35 Cl Berkeley 85 OpC 20 18 51 +37 43.0           ~ 12 0
36 C 2021+415 OpC 20 23.3 +41 42     10.1     ~ 14 0
37 NGC 6939 OpC 20 31 30 +60 39.7   8.85 7.8     ~ 132 0
38 Cl* NGC 6939 CHI 116 * 20 31 36.9606873336 +60 41 19.358964053       12.43   ~ 2 0
39 NGC 6996 As* 20 56 25 +45 28.2           ~ 12 0
40 Cl Berkeley 55 OpC 21 17 00 +51 45.9           ~ 17 0
41 Cl Berkeley 98 OpC 22 42 37 +52 22.1           ~ 10 0
42 M 52 OpC 23 24 48 +61 35.6           ~ 166 0
43 NGC 7762 OpC 23 49 52 +68 01.5           ~ 49 0

    Equat.    Gal    SGal    Ecl

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2019.11.19-07:31:39

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