2000PASP..112..529V

Query : 2000PASP..112..529V

2000PASP..112..529V - Publ. Astron. Soc. Pac., 112, 529-536 (2000/April-0)

Updated information on the Local Group.

VAN DEN BERGH S.

Abstract (from CDS):

The present note updates the information published in my recent monograph on The Galaxies of the Local Group. Highlights include (1) the addition of the newly discovered Cetus dwarf spheroidal as a certain member of the Local Group; (2) an improved distance for the Sagittarius dwarf irregular galaxy (SagDIG), which now places this object very close to the edge of the Local Group zero-velocity surface; (3) more information on the evolutionary histories of some individual Local Group members; and (4) improved distance determinations to, and luminosities for, a number of Local Group members. These data increase the number of certain (or probable) Local Group members to 36. The spatial distribution of these galaxies supports Hubble's claim that the Local Group ``is isolated in the general field.'' Currently available evidence suggests that star formation continued much longer in many dwarf spheroidals than it did in the main body of the Galactic halo. It is suggested that ``young'' globular clusters, such as Ruprecht 106, might have formed in now defunct dwarf spheroidals. Assuming SagDIG, which is the most remote Local Group galaxy, to lie on, or just inside, the zero-velocity surface of the Local Group yields a dynamical age ≳17.9±2.7 Gyr. However, this value is meaningful only if the outer regions of the local Group are in virial equilibrium.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Local Group

CDS comments: Par. 2.5 : the 9th nova discovered in SMC is NOVA SMC 1999 c , the nova in NGC 205 is EQ J004022+414548

Simbad objects: 54

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Number of rows : 54
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
3 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
4 NGC 121 GlC 00 26 49.0 -71 32 10   11.2 11.24     ~ 330 0
5 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
6 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
7 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
8 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
9 EQ J004022+414548 CV* 00 40 22.65 +41 45 48.4           ~ 2 0
10 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
11 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
12 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
13 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 445 0
14 NOVA SMC 1999 c No* 00 59 23.0 -73 07 56           ~ 3 0
15 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
16 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
17 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
18 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
19 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
20 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
21 NAME Fornax H1 Cl* 02 37 02.1 -34 11 00     16.59     ~ 107 0
22 NAME Fornax H2 GlC 02 38 44.24 -34 48 30.5   14.5       ~ 93 0
23 NAME Fornax H3 GlC 02 39 48.16 -34 15 28.6   13.59       ~ 131 0
24 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
25 NAME Fornax H4 GlC 02 40 07.697 -34 32 10.59   15.18 13.91 14.08   ~ 112 0
26 NAME Fornax H5 GlC 02 42 21.111 -34 06 05.80   14.5       ~ 101 0
27 NAME Magellanic Bridge HI 03 11 -77.5           ~ 522 1
28 NGC 1466 GlC 03 44 32.71 -71 40 18.0   11.6 11.59     ~ 166 0
29 SV* HV 2274 EB* 05 02 40.7809489608 -68 24 21.495338172 13.298 13.984 14.127 14.192 14.390 ~ 79 0
30 NGC 1818 GlC 05 04 13.300 -66 26 05.47           ~ 279 0
31 NGC 1928 Cl* 05 20 55.940 -69 28 34.96   13.34 12.47     ~ 68 0
32 NGC 1939 Cl* 05 21 26.82 -69 56 59.0   12.52 11.83     ~ 61 0
33 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
34 NAME Hodge 11 GlC 06 14 22.92 -69 50 54.9   12.57 11.93     ~ 117 0
35 NGC 2257 Cl* 06 30 12.62 -64 19 40.0   13.24 12.62     ~ 228 0
36 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
37 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
38 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
39 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 248 0
40 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
41 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
42 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
43 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
44 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
45 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 460 0
46 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
47 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
48 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
49 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
50 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
51 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
52 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
53 NAME Local Group GrG ~ ~           ~ 9325 0
54 BPS CS 22893-0052 * ~ ~           ~ 2 0

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