Local Group galaxies

version:  3 Mar 2003, Walker preprint http://xxx.lanl.gov/abs/astro-ph/0303011

Working definition is that Local Group members must lie within about
1.2 Mpc radius of the barycenter of the group, which represents the zero-
velocity surface of the Hubble expansion.

Basic list comes from van den Bergh's article appearing in the May 2000
issue of PASP (2000PASP..112..529V).  Positions are mostly from NED, although
in a few cases have been adjusted for low surface brightness objects when the
NED position is clearly in error.  V magnitudes and dimensions (mag. 25
isophote) are likewise from NED, although highly uncertain in several cases for
the nearby dwarf ellipticals.  With a few exceptions, the sizes are rounded to
two significant figures, they being no more accurate than +/-10 percent even in
the best cases.  Types are a mix from NED and myself.  Distances are adopted
from Walker's 2003 conference paper, given to 5 kpc precision when < 100 kpc,
and 10 kpc when greater than this.  True uncertainties are still 10-20 percent,
though for the LMC it is probably only 5 percent.
     Still to be done:
---calculate mean surface brightness from "best" available total magnitudes
   and dimensions;
---inspect faint galaxies on PMM sky survey images to improve coords.


Name      other       RA (2000) Dec     V    dimens.   type            kpc 
WLM                 0 01 58 -15 27.7  10.6   12'x4'    IB(s)m V        950 
IC 10               0 20 20 +59 18.0  11:   6'.3x5'.1  IB(s)m IV       660:
Cetus               0 26 11 -11 02.5  14:              dE              780 
NGC 147             0 33 12 +48 30.5   9.5   13'x8'    dE5             710 
And III             0 35 29 +36 30.5  15:   4'.5x3'.0  dE              750 
NGC 185             0 38 58 +48 20.2   9.2   12'x10'   dE3             640 
NGC 205   M110      0 40 22 +41 41.1   8.1   22'x11'   SA0-            810 
NGC 221   M32       0 42 42 +40 51.9   8.1  8'.7x6'.5  cE2             770 
NGC 224   M31       0 42 44 +41 16.1   3.4  190'x60'   SA(s)b I-II     770 
And I               0 45 40 +38 02.2  13.6  2'.5x2'.5  E3              810:
SMC                 0 52 44 -72 49.7   2.3  320'x185'  IB(s)m V         60 
Sculptor            1 00 09 -33 42.5   9:    40'x31'   dE               85 
Pisces    LGS 3     1 03 54 +21 53.0  18:     2'x2'    Im VI?          620 
IC 1613             1 04 46 +02 07.1   9.2   16'x15'   IB(s)m V        740:
And V               1 10 17 +47 37.7  15               dE              810:
And II              1 16 30 +33 25.2  13    3'.6x2'.5  dE              680 
NGC 598   M33       1 33 51 +30 39.6   5.7   71'x42'   SA(s)cd II-III  930 
Phoenix             1 51 07 -44 26.7  12.5: 4'.9x4'.1  IAm V           440:
Fornax              2 39 59 -34 27.0   9:    17'x13'   dE0             140 
LMC                 5 23 34 -69 45.4   0.6  645'x550'  IB(s)m IV        50 
Carina              6 41 37 -50 58.0  16?    23'x16'   E3              100 
Leo A     DDO 69    9 59 26 +30 44.8  12:   5'.1x3'.1  IBm V           800 
Leo I              10 08 27 +12 18.5  10:   9'.8x7'.4  dE              260 
Sextans            10 13 03 -01 36.9  12:              dE               85:
Leo II    DDO 93   11 13 29 +22 09.3  12.0:  12'x11'   dE0             210 
UMi                15 09 11 +67 12.9  11:    30'x19'   dE               75 
Draco              17 20 12 +57 54.9  10:    36'x25'   dE               95 
Milky Way          17 45 40 -29 00.5                   SB:(rs?)bc: II?     
Sgr I              18 55 03 -30 28.7                   dE?              28 
SagDIG             19 29 59 -17 40.7  15:   2'.9x2'.1  IB(s)m: V      1200 
NGC 6822           19 44 56 -14 48.1   9:    16'x14'   IB(s)m V        500 
Aquarius  DDO 210  20 46 52 -12 50.9  13.9: 2'.2x1'.1  IB(s)m V        950 
Tucana             22 41 50 -64 25.2  15:   2'.9x1'.2  dE4             900 
And VII            23 26 31 +50 41.5  13:   2'.5x2'.0  dE?             690:
Pegasus   DDO 216  23 28 35 +14 44.6  13:   5'.0x2'.7  Im V            760 
And VI             23 51 46 +24 35.0  14:   4'.0x2'.0  dE?             790 


Not in the Local Group:
many galaxies associated with IC 342/NGC 2403, such as the Maffei galaxies,
Cas I, etc.

NGC 3109 seems to be the largest of a group of dwarf galaxies including
Antlia, Sextans A and B, and some others.