2004MNRAS.348.1157H

Query : 2004MNRAS.348.1157H

2004MNRAS.348.1157H - Mon. Not. R. Astron. Soc., 348, 1157-1163 (2004/March-2)

BVRI photometry of the galactic globular cluster NGC 6779.

HATZIDIMITRIOU D., ANTONIOU V., PAPADAKIS I., KALTSA M., PAPADAKI C., PAPAMASTORAKIS I. and CROKE B.F.W.

Abstract (from CDS):

We present B, V, R and I photometry for NGC 6779 (M56), a metal-poor globular cluster in the galactic halo. The observations were performed using the 1.3-m telescope at Skinakas Observatory, in Crete. The reddening of the cluster was found to be E (B -V) = 0.32±0.02 [E (V -I) = 0.43±0.02], significantly higher than previous estimates. The metal abundance of the cluster was derived from various parametrizations of red giant branch characteristics and it was found to be [Fe/H]ZW=-2.20±0.12 dex on the Zinn-West metallicity scale, or [Fe/H]CG=-2.00±0.21 dex on the Carretta-Gratton scale. The distance modulus of the cluster is estimated to be (m -M)V= 15.62 ± 0.26 (or 14.62, if we correct for the reddening to the cluster). The horizontal branch of NGC 6779 shows a clear gap at (B -V)o= 0.0. Finally, the revised value for the metallicity of NGC 6779 led to a revision of its age to 13 Gyr, using the age-index calibrations of Salaris & Weiss.

Abstract Copyright: 2004 RAS

Journal keyword(s): globular clusters: individual: NGC 6779 (M56) - galaxies: haloes

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

Simbad objects: 41

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Number of rows : 41
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 GSC 00012-00959 * 00 55 32.9408723472 +00 38 23.078163984 17.348 16.233 15.071 14.352 13.743 ~ 5 0
2 GSC 00012-00675 RG* 00 55 39.3870602712 +00 36 19.518213096 13.672 12.828 11.782 11.220 10.699 G8III 23 0
3 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
4 NGC 4833 GlC 12 59 33.92 -70 52 35.4           ~ 467 0
5 PG 1323-086 HS* 13 25 39.4669501176 -08 49 19.067387484 12.660 13.341 13.481 13.529 13.608 sdB3IHe8 144 1
6 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
7 GSC 05017-00285 * 15 39 09.4566284544 -00 14 28.731111468 15.616 15.373 14.675 14.242 13.806 ~ 12 0
8 GSC 05017-00168 * 15 39 10.0628311248 -00 15 51.156754020 15.436 15.387 14.884 14.545 14.184 ~ 9 0
9 GSC 05017-00230 * 15 39 13.8861486600 -00 13 27.900571476 17.323 16.058 14.646 13.723 12.885 ~ 11 0
10 GSC 05017-00267 * 15 39 18.8767853880 -00 15 29.942726760 13.692 13.107 12.116 11.571 11.042 F8 15 0
11 PG 1633+099 HS* 16 35 24.0241690848 +09 47 49.891209036 13.215 14.205 14.396 14.481 14.609 sdB 113 0
12 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
13 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
14 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 406 1
15 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
16 NGC 6426 GlC 17 44 54.71 +03 10 12.5           ~ 244 0
17 GSC 00447-00230 * 18 40 45.6614210520 +00 01 49.767821796 16.950 15.559 13.649 12.451 11.293 ~ 5 0
18 GSC 00447-00152 * 18 40 51.4887124176 +00 02 23.257203540 16.093 15.365 14.281 13.657 13.063 ~ 8 0
19 TYC 447-268-1 * 18 40 52.3393681008 +00 01 54.758448624 13.392 13.245 12.516 12.077 11.627 ~ 17 0
20 GSC 00447-00056 * 18 40 52.7078198832 +00 00 50.844965760 14.864 14.052 12.771 11.998 11.178 ~ 4 0
21 SA 110-499 * 18 43 07.6616255640 +00 28 01.482501432 13.363 12.724 11.737 11.137 10.464 B9 17 0
22 SA 110-502 * 18 43 10.1099117376 +00 27 42.341011020 16.982 14.656 12.330 10.957 9.705 ~ 12 0
23 TYC 447-387-1 * 18 43 11.6970416904 +00 29 42.979005384 12.950 12.444 11.773 11.400 10.965 A0 21 0
24 SA 110-504 * 18 43 11.7110072187 +00 30 04.545001029 16.593 15.28 14.00 13.61 12.540 ~ 9 0
25 SA 110-506 * 18 43 18.9251365632 +00 30 27.167821488 11.939 11.880 11.312 10.977 10.660 F5 15 0
26 SA 110-507 * 18 43 19.1250687600 +00 29 26.008325232 14.411 13.581 12.440 11.807 11.234 ~ 15 0
27 M 56 GlC 19 16 35.57 +30 11 00.5           ~ 455 0
28 GSC 00478-01393 * 19 37 28.6383708408 +00 25 02.768737548 13.045 12.783 12.387 12.161 11.904 A0 18 0
29 TYC 479-1283-1 * 19 37 41.5560635808 +00 26 50.958145932 14.994 13.129 11.419 10.468 9.589 K0: 17 0
30 BD+00 4260 * 19 37 43.2872733624 +00 25 48.557675748 14.647 12.341 10.382 9.205 7.982 M5III 21 0
31 TYC 511-2229-1 * 20 42 14.5845398760 +00 08 59.684591904 11.888 11.878 11.424 11.151 10.877 F5 16 0
32 TYC 511-2110-1 * 20 42 26.3877803016 +00 07 42.508077600 12.602 12.627 12.095 11.778 11.456 F8 15 0
33 BD-00 4073 * 20 42 35.4256593792 +00 07 20.230857624 12.409 11.115 9.905 9.257 8.688 K2 25 0
34 UCAC2 28113774 * 20 43 54.9972403344 -10 45 31.310130060 15.302 15.206 14.540 14.161 13.789 ~ 12 0
35 UCAC2 28113781 * 20 43 58.4534592120 -10 47 12.253046280 16.506 16.520 15.911 15.544 15.171 ~ 10 0
36 [L92b] Mark A HS* 20 43 59.2253596272 -10 47 41.696051820 11.854 13.010 13.256 13.370 13.494 sdO 75 1
37 [L92b] Mark A3 * 20 44 03.8151050520 -10 45 37.977226668 16.407 15.756 14.818 14.231 13.720 ~ 10 0
38 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
39 PG 2213-006 HS* 22 16 28.3762385784 -00 21 13.503339864 12.747 13.93 14.14 14.54 14.348 sdOB 79 0
40 SA 114-750 * 22 41 44.7035499504 +01 12 36.369967860 11.512 11.879 11.916 11.889 11.906 B9 44 0
41 TYC 568-1417-1 * 22 42 09.2892740472 +01 10 16.804144380 13.530 12.307 11.101 10.456 9.893 K1.5III 18 0

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