2008ApJ...676L..17I

Query : 2008ApJ...676L..17I

2008ApJ...676L..17I - Astrophys. J., 676, L17-L20 (2008/March-3)

Andromeda XVII: a new low-luminosity satellite of M31.

IRWIN M.J., FERGUSON A.M.N., HUXOR A.P., TANVIR N.R., IBATA R.A. and LEWIS G.F.

Abstract (from CDS):

We report the discovery of a new dwarf spheroidal galaxy near M31 on the basis of INT/WFC imaging. The system, Andromeda XVII (And XVII), is located at a projected radius of ~44 kpc from M31, has a line-of-sight distance of 794±40 kpc measured using the tip of the red giant branch, and therefore lies well within the halo of M31. The color of the red giant branch implies a metallicity of [Fe/H]~-1.9, and we find an absolute magnitude of MV~-8.5. Three globular clusters lie near the main body of And XVII, suggesting a possible association; if any of these are confirmed, it would make And XVII exceptionally unusual among the faint dSph population. The projected position on the sky of And XVII strengthens an intriguing alignment apparent in the satellite system of M31, although with a caveat about biases stemming from the current area surveyed to significant depth.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Dwarf - Galaxies: Halos - Galaxies: Individual: Messier Number: M31 - Galaxy: Globular Clusters: General

Nomenclature: And R (No. XVII) added = NAME Andromeda R (No. XVII) added.

Simbad objects: 25

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Number of rows : 25
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 HD 344 HB* 00 08 03.4868999832 -33 31 45.568976952   6.787 5.662     K1III 44 0
2 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
3 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
4 V* V428 And LP* 00 36 46.4410654008 +44 29 18.920176764   6.727 5.129     K6IIIa 111 0
5 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
6 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
7 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
8 NAME Andromeda VIII blu 00 42 06.0 +40 37 00           ~ 27 0
9 NAME Andromeda IV G 00 42 32.3 +40 34 19           ~ 80 0
10 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
11 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
12 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
13 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
14 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
15 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
16 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
17 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
18 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
19 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
20 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
21 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
22 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
23 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
24 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
25 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2

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