2003ApJ...596L.183M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.21CET11:31:34

2003ApJ...596L.183M - Astrophys. J., 596, L183-L186 (2003/October-3)

Andromeda VIII: a new tidally distorted satellite of M31.

MORRISON H.L., HARDING P., HURLEY-KELLER D. and JACOBY G.

Abstract (from CDS):

We report the detection of a new satellite of M31, projected close to M32. Andromeda VIII is tidally distorted, with length ∼10 kpc and width a few kiloparsecs. It contains 5-12 planetary nebulae and 1-3 globular clusters and has a velocity of -204 km/s with respect to M31, some 350 km/s away from M32's velocity. There are also ∼4x105 Mof H I, well-separated from the disk, at the same position and velocity. The satellite has luminosity of 1.2-2.4x108 Land a central surface brightness of the order of µV=24. Both these values are typical of Local Group dwarf galaxies. Its surface brightness is some 6 mag brighter than any of the stellar streams found in the Milky Way or M31. The three associated globular clusters have reddening consistent with foreground reddening from the Milky Way only, making it likely that the satellite is in front of M31, unlike the giant tidal stream of Ibata et al., which is behind M31 in the southeast quadrant. However, the major axis of And VIII is aligned with the western edge of this giant stream, and we suggest that its unusual fan shape is caused by superposition of two streams, the westernmost of which was tidally stripped from And VIII.

Abstract Copyright:

Journal keyword(s): Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Local Group

Nomenclature: And R (No. VIII) added.

Simbad objects: 21

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Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HKPN M31 49 PN 00 40 37.96 +40 13 35.5           ~ 3 0
2 HKPN M31 51 PN 00 40 44.00 +40 25 08.7     21.76     ~ 6 0
3 [SCM2012b] PNh020 PN 00 40 56.88 +40 20 09.0           ~ 5 0
4 MLA 319 PN 00 41 12.50 +40 35 58.5     21.55     ~ 5 0
5 HKPN M31 70 PN 00 42 03.30 +40 31 39.6     20.98     ~ 6 0
6 HKPN M31 71 PN 00 42 04.07 +40 29 37.6           ~ 3 0
7 NAME Andromeda VIII blu 00 42 06.0 +40 37 00           ~ 26 0
8 Bol 85 GlC 00 42 18.24 +40 39 57.2 17.920 17.550 16.84 16.380 15.630 ~ 34 0
9 HKPN M31 75 PN 00 42 22.90 +40 43 06.6     22.97     ~ 4 0
10 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1986 2
11 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10708 1
12 Ford NGC 221 22 PN 00 42 49.90 +40 51 10.6     22.61     ~ 10 0
13 HKPN M31 87 PN 00 42 56.20 +40 35 40.0     23.57     ~ 4 0
14 HKPN M31 91 PN 00 43 05.30 +40 53 33.9     22.00     ~ 6 0
15 HKPN M31 94 PN 00 43 15.20 +40 51 13.2     22.62     ~ 6 0
16 HKPN M31 97 PN 00 43 20.70 +40 57 44.1     22.32     ~ 5 0
17 2MASX J00433041+4049108 GlC 00 43 30.410 +40 49 10.86 17.320 17.250 16.86 16.090 15.530 ~ 36 0
18 2MASX J00441503+4056469 GlC 00 44 15.0352324576 +40 56 47.236921109 17.740 17.322 16.386 15.818 15.190 ~ 38 0
19 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1439 1
20 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1683 2
21 NAME Local Group GrG ~ ~           ~ 6802 0

    Equat.    Gal    SGal    Ecl

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2020.02.21-11:31:34

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