2012AJ....144..126D

Query : 2012AJ....144..126D

2012AJ....144..126D - Astron. J., 144, 126 (2012/November-0)

Ultraviolet properties of Galactic globular clusters with GALEX. II. Integrated colors.

DALESSANDRO E., SCHIAVON R.P., ROOD R.T., FERRARO F.R., SOHN S.T., LANZONI B. and O'CONNELL R.W.

Abstract (from CDS):

We present ultraviolet (UV) integrated colors of 44 Galactic globular clusters (GGCs) observed with the Galaxy Evolution Explorer (GALEX) in both FUV and NUV bands. This database is the largest homogeneous catalog of UV colors ever published for stellar systems in our Galaxy. The proximity of GGCs makes it possible to resolve many individual stars even with the somewhat low spatial resolution of GALEX. This allows us to determine how the integrated UV colors are driven by hot stellar populations, primarily horizontal branch stars and their progeny. The UV colors are found to be correlated with various parameters commonly used to define the horizontal branch morphology. We also investigate how the UV colors vary with parameters like metallicity, age, helium abundance, and concentration. We find for the first time that GCs associated with the Sagittarius dwarf galaxy have (FUV - V) colors systematically redder than GGCs with the same metallicity. Finally, we speculate about the presence of an interesting trend, suggesting that the UV color of GCs may be correlated with the mass of the host galaxy, in the sense that more massive galaxies possess bluer clusters.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general - stars: horizontal-branch - ultraviolet: stars

Simbad objects: 67

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Number of rows : 67
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
3 Bol 9 GlC 00 40 30.6999535344 +41 36 55.732742820 17.540 17.630 16.920 16.420 15.870 ~ 51 0
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 Bol 366 GlC 00 44 46.6310290224 +42 03 50.257820304 16.946 16.888 16.176 15.718 15.072 ~ 41 0
6 SKHB 327 GlC 00 46 49.4888971680 +42 44 46.856576076 17.080 16.673 15.944 15.402 14.95 ~ 46 0
7 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
8 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
9 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1167 0
10 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
11 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 579 0
12 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
13 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
14 NGC 2298 GlC 06 48 59.41 -36 00 19.1     8.89     ~ 547 0
15 NAME CMa Dwarf Galaxy G 07 12.6 -27 40     -0.1     ~ 203 1
16 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
17 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
18 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
19 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
20 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
21 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
22 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 675 0
23 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
24 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
25 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
26 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 375 0
27 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 424 0
28 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
29 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 408 0
30 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
31 NGC 6101 GlC 16 25 48.12 -72 12 07.9           ~ 337 0
32 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
33 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
34 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 736 0
35 NGC 6235 GlC 16 53 25.36 -22 10 38.8   11.99 7.20     ~ 208 0
36 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
37 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 668 0
38 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 406 1
39 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 302 0
40 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
41 NGC 6342 GlC 17 21 10.14 -19 35 14.7     10.01     ~ 310 0
42 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 372 1
43 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
44 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 420 0
45 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
46 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
47 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
48 NGC 6535 GlC 18 03 50.51 -00 17 51.5     9.85     ~ 320 0
49 NGC 6541 GlC 18 08 02.36 -43 42 53.6           ~ 409 0
50 NGC 6584 GlC 18 18 37.60 -52 12 56.8     8.17     ~ 317 0
51 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
52 M 70 GlC 18 43 12.76 -32 17 31.6           ~ 421 0
53 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
54 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
55 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
56 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 384 0
57 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
58 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 357 0
59 GCl 114 GlC 19 45 14.40 -08 00 26.0     7.54     ~ 165 0
60 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 394 0
61 M 72 GlC 20 53 27.70 -12 32 14.3     8.96     ~ 465 0
62 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 562 0
63 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
64 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1
65 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0
66 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 548 0
67 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 330 0

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