2009ApJ...700..103P

Query : 2009ApJ...700..103P

2009ApJ...700..103P - Astrophys. J., 700, 103-113 (2009/July-3)

Ages of M33 star clusters based on the Hubble space Telescope/WFPC2 photometry.

PARK W.-K., PARK H.S. and LEE M.G.

Abstract (from CDS):

We present a result of age estimation for star clusters in M33. We obtain color-magnitude diagrams (CMDs) of resolved stars in 242 star clusters from the Hubble Space Telescope/Wide Field Planetary Camera 2 images. We estimate ages of 100 star clusters among these, by fitting the Padova theoretical isochrones to the observational CMDs. Age distribution of the star clusters shows a dominant peak at log(t) ∼ 7.8. Majority of star clusters are younger than log(t) = 9.0, while 10 star clusters are older than log(t) ∼ 9.0. There is only one cluster younger than log(t) = 7 in this study, which is in contrast with the results based on the integrated photometry of star clusters in the previous studies. Radial distribution of the cluster ages shows that young- to intermediate-age clusters are found from the center to the outer region, while old clusters are distributed farther from the M33 center. We briefly discuss the implication of the results with regard to the formation of the M33 cluster system.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: M33 - galaxies: photometry - galaxies: star clusters

VizieR on-line data: <Available at CDS (J/ApJ/700/103): table1.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 117

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Number of rows : 117
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 800 1
2 Bol 315 GlC 00 39 48.570 +40 31 30.45 16.304 16.581 16.090 15.755 15.298 ~ 53 1
3 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1308 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12643 1
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11145 1
6 CBF 40 GlC 01 33 02.40 +30 34 44.5 17.657 18.675 18.592 18.341 18.534 ~ 9 0
7 CBF 86 GlC 01 33 08.11 +30 28 00.2 19.872 19.649 19.017 18.549 18.244 ~ 14 0
8 [SSA2010] 993 Cl* 01 33 11.78 +30 38 55.8 16.677 17.536 17.326 17.129 17.429 ~ 4 0
9 CBF 88 GlC 01 33 13.8699992784 +30 29 44.522990412 17.549 18.519 18.303 18.216 18.482 ~ 8 0
10 CBF 53 GlC 01 33 13.87 +30 29 05.1 20.008 21.055 20.170 19.610 19.120 ~ 10 0
11 CBF 54 GlC 01 33 14.2863375672 +30 28 22.530659808 19.362 19.129 18.323 17.752 17.258 ~ 34 0
12 [PL2007] 4 Cl* 01 33 14.97 +30 39 04.7 18.604 18.918 18.463 18.092 17.700 ~ 3 0
13 [SSA2010] 1106 Cl* 01 33 19.51 +30 35 29.7 17.135 17.409 17.118 16.951 16.673 ~ 4 0
14 [SSA2010] 1111 Cl* 01 33 20.25 +30 34 49.6 17.246 17.756 17.570 17.531 17.308 ~ 5 0
15 [PL2007] 7 GlC 01 33 21.3522608640 +30 31 12.576452844 18.846 19.219 18.882 18.534 18.371 ~ 7 0
16 2MASS J01332206+3040283 GlC 01 33 22.062 +30 40 28.34 18.089 18.406 19.249 18.307 17.348 ~ 15 0
17 CBF 60 GlC 01 33 22.2892086312 +30 40 59.325748860 18.834 18.962 18.611 18.498 18.006 ~ 13 0
18 CBF 18 Cl* 01 33 24.85 +30 33 55.0 19.825 20.053 19.781 19.798 19.307 ~ 9 0
19 [SSA2010] 1164 GlC 01 33 26.00 +30 36 24.3 18.128 18.197 17.811 17.596 17.278 ~ 10 0
20 CBF 93 Cl* 01 33 26.49 +30 41 11.6 19.844 19.805 19.515 19.302 19.032 ~ 8 0
21 [PL2007] 10 GlC 01 33 26.6026766328 +30 31 30.039232944 18.199 18.527 18.148 18.040 17.455 ~ 7 0
22 [SSA2010] 1173 GlC 01 33 26.75 +30 33 21.4 17.387 17.836 17.574 17.402 17.109 ~ 18 0
23 [SSA2010] 1175 GlC 01 33 26.94 +30 34 52.6 18.774 19.074 18.648 18.235 17.687 ~ 11 0
24 [SSA2010] 1180 GlC 01 33 27.3781996032 +30 41 48.205034124 19.344 19.544 18.778 19.128 18.815 ~ 5 0
25 CBF 124 Cl* 01 33 27.9464783352 +30 37 28.403371128 19.292 19.564 19.398 18.892 18.480 ~ 8 0
26 [SSA2010] 1203 GlC 01 33 28.6875445368 +30 41 35.186506296 18.092 18.042 17.286 16.846 16.379 ~ 30 0
27 [SSA2010] 1202 GlC 01 33 28.70 +30 36 37.5 17.922 18.052 17.711 17.500 17.198 ~ 18 0
28 [SSA2010] 1215 GlC 01 33 29.48 +30 30 02.1 18.044 18.387 18.120 17.975 17.689 ~ 12 0
29 [KPM2002] G133.5520-31.4725 Cl* 01 33 30.06 +30 31 48.7   16.576 16.466   16.197 ~ 5 0
30 CBF 111 Cl* 01 33 30.07 +30 49 29.0 21.212 21.242 20.846 20.390 20.343 ~ 8 0
31 [SM2007] 466 Cl* 01 33 30.34 +30 37 43.4 19.739 19.824 19.359 19.016 18.464 ~ 6 0
32 [SSA2010] 1230 GlC 01 33 30.70 +30 22 21.4 18.988 18.583 18.036 17.644 17.206 ~ 24 0
33 CBF 123 Cl* 01 33 30.8892223584 +30 37 12.753590160 18.492 18.711 18.376 18.111 17.681 ~ 7 0
34 [SSA2010] 1233 GlC 01 33 30.90 +30 49 11.8 19.216 19.034 18.478 18.142 17.722 ~ 14 0
35 LGGS J013330.99+303652.5 sg* 01 33 30.9537080832 +30 36 52.371608760 17.983 18.380 18.487 17.752 17.125 A8I 15 0
36 [SSA2010] 1237 GlC 01 33 31.25 +30 50 07.0 19.799 19.766 19.228 18.915 18.775 ~ 10 0
37 [SSA2010] 1239 GlC 01 33 31.39 +30 40 20.4 18.750 18.581 17.979 17.619 17.241 ~ 24 0
38 [SSA2010] 1248 GlC 01 33 32.01 +30 33 21.8 17.160 17.610 17.309 17.099 16.750 ~ 14 0
39 [SM2007] 533 GlC 01 33 32.18 +30 30 17.2 18.223 18.602 18.191 17.961 17.475 ~ 7 0
40 [SSA2010] 1256 Cl* 01 33 32.52 +30 35 38.0 16.264 16.712 16.378 16.156 15.790 ~ 4 1
41 NGC 595 HII 01 33 33.53 +30 41 29.8           ~ 205 0
42 CBF 108 Cl* 01 33 34.68 +30 48 21.2 19.549 19.791 19.172 18.707 18.196 ~ 9 0
43 [SBG2007] 4 GlC 01 33 35.0831406456 +30 49 00.041875644 19.988 19.447 18.373 17.692 17.099 ~ 26 0
44 CBF 45 Cl* 01 33 35.27 +30 33 11.6 19.579 19.616 19.125 18.728 18.389 ~ 8 0
45 [SSA2010] 1287 GlC 01 33 36.19 +30 47 55.1 18.184 18.429 18.067 17.831 17.475 ~ 10 0
46 [SSA2010] 1293 GlC 01 33 36.55 +30 50 35.6 16.965 17.810 17.681 17.629 17.762 ~ 4 0
47 CBF 44 GlC 01 33 38.0159443440 +30 33 05.342557104 17.449 17.852 17.573 17.448 17.160 ~ 13 0
48 [SSA2010] 1328 GlC 01 33 38.14 +30 42 22.9 18.760 19.100 18.733 18.461 18.028 ~ 12 0
49 [SSA2010] 1330 GlC 01 33 38.19 +30 43 23.9 19.231 19.226 18.556 17.991 17.313 ~ 8 0
50 [CS82] U76 Cl* 01 33 41.54 +30 42 44.9 18.969 19.144 18.757 18.598 17.985 ~ 7 0
51 [SSA2010] 1412 GlC 01 33 42.71 +30 43 49.6 18.220 18.666 17.715 17.875 17.461 ~ 11 0
52 [SSA2010] 1431 GlC 01 33 43.80 +30 40 56.7 17.938 18.784 18.459 17.892 17.849 ~ 10 0
53 [SSA2010] 1434 GlC 01 33 43.85 +30 32 10.4 17.035 17.520 17.347 17.256 17.107 ~ 12 0
54 [SSA2010] 1458 GlC 01 33 45.10 +30 47 46.7 17.210 17.081 16.298 15.823 15.311 ~ 38 0
55 [SBG2007] 11 Cl* 01 33 45.1100809656 +30 49 09.231581064 19.933 20.018 18.781 18.545 18.053 ~ 9 0
56 CBF 62 Cl* 01 33 46.2400842480 +30 47 50.851626612 19.858 19.707 19.022 18.488 17.990 ~ 8 0
57 [SSA2010] 1513 GlC 01 33 48.65 +30 47 42.6 20.636 20.687 20.261 19.783 19.332 ~ 10 0
58 CBF 63 Cl* 01 33 49.15 +30 49 01.5 20.587 20.582 19.832 19.511 19.024 ~ 8 0
59 CBF 105 Cl* 01 33 50.85 +30 28 59.9 21.612 21.320 20.852 20.459 19.602 ~ 8 0
60 CBF 127 Cl* 01 33 50.85 +30 38 34.5 15.544 16.405 16.384 16.515 16.604 ~ 9 0
61 CBF 4 GlC 01 33 50.8840438656 +30 31 44.554289772 18.074 18.320 17.891 17.730 17.543 ~ 17 0
62 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5838 1
63 [SSA2010] 1546 GlC 01 33 50.90 +30 38 55.5 16.373 17.087 16.779 16.383 15.654 ~ 14 0
64 CBF LB 2-3 Cl* 01 33 51.80 +30 31 47.2 18.993 19.402 19.072 18.790 18.562 ~ 9 0
65 [SSA2010] 1566 GlC 01 33 52.20 +30 29 03.8 18.297 18.126 17.290 16.773 16.277 ~ 32 0
66 [B2011b] 20 GlC 01 33 54.13 +30 33 09.6 16.544 17.464 17.259 17.089 17.268 ~ 16 0
67 CBF 30 GlC 01 33 54.7060733712 +30 45 28.423629972 18.357 18.403 17.988 17.686 17.341 ~ 10 0
68 [SSA2010] 1596 GlC 01 33 54.80 +30 32 15.8 17.934 18.163 17.886 17.756 17.578 ~ 12 0
69 CBF LB 2-1 Cl* 01 33 55.0045820304 +30 32 14.436470040 18.871 18.941 18.589 18.442 18.254 ~ 12 0
70 [SSA2010] 1637 GlC 01 33 57.8403231024 +30 33 25.635086532 16.525 17.202 17.078 16.971 16.718 ~ 12 0
71 CBF 26 Cl* 01 33 58.03 +30 39 26.2 16.925 17.607 17.459 17.392 17.267 ~ 9 0
72 [PL2007] 23 Cl* 01 33 58.09 +30 37 29.7   17.908 17.771   17.193 ~ 3 0
73 CBF 130 Cl* 01 33 58.10 +30 38 15.5 17.698 18.275 18.121 18.037 17.723 ~ 8 0
74 [PL2007] 24 Cl* 01 33 58.49 +30 38 21.0 17.375 17.796 17.584 17.441 17.084 ~ 3 0
75 [SSA2010] 1659 GlC 01 33 59.52 +30 45 49.9 16.311 16.863 16.709 16.618 16.299 ~ 11 0
76 [SSA2010] 1669 GlC 01 34 00.01 +30 33 54.3 15.451 16.230 16.109 15.920 15.471 ~ 12 0
77 [SSA2010] 1672 GlC 01 34 00.194 +30 37 46.71 16.553 16.612 15.953 15.650 15.356 ~ 15 1
78 CBF 121 Cl* 01 34 01.99 +30 38 10.9 18.574 18.819 18.512 18.417 18.083 ~ 8 0
79 [SSA2010] 1725 GlC 01 34 04.32 +30 39 22.8 17.579 18.305 18.088 17.897 17.500 ~ 8 0
80 [SSA2010] 1727 GlC 01 34 04.4506935024 +30 36 56.237979852 17.591 18.053 17.755 17.463 16.911 ~ 8 0
81 CBF 117 Cl* 01 34 07.28 +30 38 29.5 19.074 19.304 18.790 18.367 17.887 ~ 10 0
82 [SSA2010] 1765 GlC 01 34 08.04 +30 38 38.2 17.512 17.286 16.376 15.839 15.282 ~ 27 0
83 [HS80] 96A s*b 01 34 08.475 +30 39 02.03 16.052 16.691 16.604 16.474 16.099 B3Ia 18 0
84 CBF 122 GlC 01 34 08.6892029856 +30 39 23.265570780 17.585 17.803 17.373 17.125 16.816 ~ 10 0
85 [SSA2010] 1781 GlC 01 34 08.70 +30 42 55.3 19.355 19.232 18.910 18.468 17.904 ~ 13 0
86 [SSA2010] 1796 GlC 01 34 09.71 +30 21 30.0 18.766 18.890 18.618 18.451 18.116 ~ 11 0
87 [CS82] U70 Cl* 01 34 13.69 +30 43 18.4 18.954 19.327 19.058 18.999 19.031 ~ 7 0
88 [SSA2010] 1886 Cl* 01 34 14.44 +30 34 17.6 17.046 17.792 17.540 17.292 16.694 ~ 4 0
89 [CS82] C33 GlC 01 34 14.5765911144 +30 32 35.242259136 18.653 18.589 18.153 17.912 17.582 ~ 14 0
90 [PL2007] 27 Cl* 01 34 14.96 +30 33 53.7 17.501 18.149 17.980 17.836 17.745 ~ 4 0
91 [SSA2010] 1901 GlC 01 34 15.51 +30 42 11.5 18.020 18.224 17.785 17.447 16.933 ~ 12 0
92 [SSA2010] 1906 GlC 01 34 15.67 +30 33 41.1 16.594 17.317 17.125 16.936 16.528 ~ 5 0
93 CBF 34 GlC 01 34 16.3459182072 +30 37 48.943893108 17.678 18.024 17.637 17.433 17.115 ~ 10 0
94 CBF LB 3-1 Cl* 01 34 17.54 +30 42 36.7 20.099 20.235 19.696 19.673 18.787 ~ 10 0
95 [SSA2010] 1937 GlC 01 34 18.08 +30 31 58.9 18.223 18.873 18.759 18.765 18.727 ~ 5 0
96 [SSA2010] 1957 GlC 01 34 19.89 +30 36 12.7 17.037 17.387 17.123 16.978 16.765 ~ 16 0
97 CBF 10 Cl* 01 34 21.99 +30 44 39.1 18.783 19.026 18.626 18.074 18.249 ~ 10 0
98 [SSA2010] 2075 GlC 01 34 30.20 +30 38 13.0 17.848 17.880 17.127 16.618 16.108 ~ 33 0
99 CBF 80 Cl* 01 34 31.07 +30 37 41.1 19.554 19.940 19.684 19.798 19.592 ~ 8 0
100 NGC 604 HII 01 34 32.1 +30 47 01           ~ 586 0
101 [SSA2010] 2115 GlC 01 34 32.90 +30 38 12.0 19.803 19.679 19.030 18.489 17.848 ~ 10 0
102 [SSA2010] 2119 GlC 01 34 33.0464764800 +30 37 36.172095204 18.106 18.473 18.291 18.116 17.861 ~ 11 0
103 [SSA2010] 2126 GlC 01 34 33.73 +30 39 15.7 18.364 18.663 18.276 17.986 17.428 ~ 12 0
104 [SSA2010] 2132 GlC 01 34 35.30 +30 38 30.1 19.976 19.708 18.794 18.274 17.849 ~ 11 0
105 CBF 142 Cl* 01 34 40.41 +30 46 01.3 15.336 16.076 15.885 15.626 14.806 ~ 9 0
106 [SSA2010] 2206 GlC 01 34 42.78 +30 37 20.2 17.748 18.096 17.753 17.390 16.854 ~ 5 0
107 [SSA2010] 2222 GlC 01 34 44.20 +30 52 18.9 18.565 18.427 17.578 17.073 16.595 ~ 27 0
108 [PL2007] 32 Cl* 01 34 44.59 +30 37 32.5   18.094 18.071   17.905 ~ 4 0
109 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7062 0
110 NGC 1487 GiP 03 55 46.5 -42 22 01   12.28 11.68 11.74 11.02 ~ 111 0
111 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17428 0
112 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1332 1
113 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1691 0
114 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1160 1
115 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4329 4
116 NGC 5195 GiP 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 778 3
117 NAME Local Group GrG ~ ~           ~ 8387 0

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