2009ApJ...701.1323G

Query : 2009ApJ...701.1323G

2009ApJ...701.1323G - Astrophys. J., 701, 1323-1335 (2009/August-3)

Variable stars in the Fornax dSph galaxy. III. The globular cluster Fornax 5.

GRECO C., CLEMENTINI G., CATELAN M., HELD E.V., PORETTI E., GULLIEUSZIK M., MAIO M., REST A., DE LEE N., SMITH H.A. and PRITZL B.J.

Abstract (from CDS):

We present a new study of the variable star population in globular cluster 5 of the Fornax dSph, based on B and V time series photometry obtained with the MagIC camera of the 6.5 m Magellan Clay telescope and complementary Hubble Space Telescope archive data. Light curves and accurate periodicities were obtained for 30 RR Lyrae stars and one SX Phoenicis variable. The RR Lyrae sample includes 15 fundamental-mode pulsators, 13 first-overtone pulsators, one candidate double-mode pulsator and one RR Lyrae star with uncertain type classification. The average and minimum periods of the ab-type RR Lyrae stars, ab> = 0.590 days, Pab,min= 0.53297 days and the position in the horizontal branch type-metallicity plane, indicate that the cluster has Oosterhoff-intermediate properties, basically confirming previous indications by Mackey & Gilmore, although with some differences both in the period and type classification of individual variables. The average apparent magnitude of the Fornax 5 RR Lyrae stars is = 21.35±0.02 mag (σ = 0.07 mag, average on 14 stars more likely belonging to the cluster, and having well sampled light curves). This value leads to a true distance modulus of µ0= 20.76±0.07 (d = 141.9+4.6–4.5kpc) if we adopt for the cluster the metal abundance by Buonanno et al. ([Fe/H] = -2.20±0.20), or µ0= 20.66±0.07 (d = 135.5+4.4–4.3kpc), if we adopt Strader et al.'s metal abundance ([Fe/H] = -1.73±0.13).

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: individual: Fornax - globular clusters: individual: Fornax 5 - stars: horizontal-branch - stars: variables: other - techniques: photometric

VizieR on-line data: <Available at CDS (J/ApJ/701/1323): table2.dat table3.dat table4.dat>

Nomenclature: Tables 2-4: [GCC2009] VNN (Nos V1-V31).

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 - 2026 		#notes
1 V* T Phe Mi* 00 30 26.2337742744 -46 24 33.379722396   12.46 11.43 12.43   M7e 76 0
2 NAME Fornax H1 Cl* 02 37 02.1 -34 11 00     16.59     ~ 107 0
3 NAME Fornax H2 GlC 02 38 44.24 -34 48 30.5   14.5       ~ 93 0
4 NAME Fornax H3 GlC 02 39 48.16 -34 15 28.6   13.59       ~ 131 0
5 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
6 NAME Fornax H4 GlC 02 40 07.697 -34 32 10.59   15.18 13.91 14.08   ~ 112 0
7 [GCC2009] V30 RR* 02 42 17.4944542560 -34 07 16.492365660   21.68 21.40     ~ 1 0
8 [GCC2009] V26 RR* 02 42 18.3229642176 -34 06 13.398688944   21.54 21.28     ~ 1 0
9 [GCC2009] V28 RR* 02 42 18.690 -34 05 43.30   21.76 21.46     ~ 2 0
10 [GCC2009] V25 RR* 02 42 19.520 -34 05 48.13   21.65 21.38     ~ 1 0
11 [GCC2009] V23 RR* 02 42 19.860 -34 05 56.09   21.61 21.37     ~ 1 0
12 [MG2003] F5V39 RR* 02 42 20.1158191728 -34 06 19.022549328   21.85 21.45     ~ 1 0
13 [GCC2009] V15 RR* 02 42 20.2549532160 -34 06 05.057548020   21.54 21.20     ~ 1 0
14 [GCC2009] V16 RR* 02 42 20.4960290112 -34 05 59.943441588   21.63 21.29     ~ 1 0
15 [GCC2009] V11 RR* 02 42 20.510 -34 06 10.69   21.67 21.38     ~ 1 0
16 [GCC2009] V7 RR* 02 42 20.540 -34 06 05.83     21.48     ~ 1 0
17 [GCC2009] V29 SX* 02 42 20.640 -34 05 43.59   23.97 23.74     ~ 1 0
18 [MG2003] F5V20 RR* 02 42 20.8985115384 -34 06 20.549498292   21.66 21.37     ~ 1 0
19 [GCC2009] V2 RR* 02 42 21.010 -34 06 10.56     21.26     ~ 1 0
20 [GCC2009] V6 RR* 02 42 21.020 -34 06 01.68           ~ 1 0
21 NAME Fornax H5 GlC 02 42 21.111 -34 06 05.80   14.5       ~ 101 0
22 [GCC2009] V5 RR* 02 42 21.200 -34 06 02.17           ~ 1 0
23 [GCC2009] V1 RR* 02 42 21.250 -34 06 07.60           ~ 1 0
24 [GCC2009] V4 RR* 02 42 21.340 -34 06 03.19     21.21     ~ 1 0
25 [GCC2009] V19 RR* 02 42 21.390 -34 05 52.21   21.67 21.36     ~ 1 0
26 [GCC2009] V3 RR* 02 42 21.400 -34 06 08.64     21.33     ~ 1 0
27 [GCC2009] V22 RR* 02 42 21.530 -34 06 25.23   21.76 21.40     ~ 1 0
28 [GCC2009] V8 RR* 02 42 21.580 -34 06 05.01     21.48     ~ 1 0
29 [GCC2009] V21 RR* 02 42 21.580 -34 05 50.29   21.64 21.40     ~ 1 0
30 [GCC2009] V9 RR* 02 42 21.630 -34 06 08.83     21.23     ~ 1 0
31 [GCC2009] V12 RR* 02 42 21.670 -34 06 04.63   21.52 21.27     ~ 1 0
32 [GCC2009] V10 RR* 02 42 21.680 -34 06 07.49     21.26     ~ 1 0
33 [GCC2009] V13 RR* 02 42 21.720 -34 06 07.58   21.68 21.37     ~ 1 0
34 [GCC2009] V14 RR* 02 42 21.790 -34 06 01.59   21.59 21.39     ~ 1 0
35 [GCC2009] V17 RR* 02 42 22.050 -34 06 07.61   21.75 21.36     ~ 1 0
36 [GCC2009] V24 RR* 02 42 22.840 -34 06 11.51   21.54 21.35     ~ 1 0
37 [MG2003] F5V30 RR* 02 42 24.0706137360 -34 06 12.194866908   21.65 21.30     ~ 2 0
38 [MG2003] F5V12 RR* 02 42 25.6696733832 -34 05 07.612506996   21.36 21.21     ~ 1 0
39 NAME Ret GlC 04 36 10.15 -58 51 34.8   14.00 14.25 13.50   ~ 177 1
40 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
41 RL 149 HS* 07 24 14.3741784768 -00 33 04.165016904 12.958 13.737 13.866 13.906 13.974 sdB 114 0
42 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
43 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0

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