2010ApJ...715..972J


Query : 2010ApJ...715..972J

2010ApJ...715..972J - Astrophys. J., 715, 972-985 (2010/June-1)

Diffuse tidal structures in the halos of Virgo ellipticals.

JANOWIECKI S., MIHOS J.C., HARDING P., FELDMEIER J.J., RUDICK C. and MORRISON H.

Abstract (from CDS):

We use deep V-band surface photometry of five of the brightest elliptical galaxies in the Virgo Cluster to search for diffuse tidal streams, shells, and plumes in their outer halos (r>50 kpc). We fit and subtract elliptical isophotal models from the galaxy images to reveal a variety of substructure, with surface brightnesses in the range µV= 26-29 mag/arcsec2. M49 possesses an extended, interleaved shell system reminiscent of the radial accretion of a satellite companion, while M89's complex system of shells and plumes suggests a more complicated accretion history involving either multiple events or a major merger. M87 has a set of long streamers as might be expected from stripping of low luminosity dwarfs on radial orbits in Virgo. M86 also displays a number of small streams indicative of stripping of dwarf companions, but these comprise much less luminosity than those of M87. Only M84 lacks significant tidal features. We quantify the photometric properties of these structures, and discuss their origins in the context of each galaxy's environment and kinematics within the Virgo Cluster.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Virgo - galaxies: individual (M49, M84, M86, M87, M89)

Simbad objects: 20

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Number of rows : 20
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 * alf Leo PM* 10 08 22.31099 +11 58 01.9516 0.88 1.24 1.40 1.37 1.47 B8IVn 891 1
2 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
3 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
4 NGC 4406B GiC 12 26 15.18 +12 57 49.8   16.7 14.32   12.70 ~ 38 0
5 NGC 4435 GiG 12 27 40.503 +13 04 44.48 12.23 11.74 10.80     ~ 474 2
6 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
7 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 429 2
8 LEDA 41098 GiC 12 28 58.1374397568 +12 39 42.236467668   16.06 15.24   13.93 ~ 39 0
9 LEDA 41097 LSB 12 28 59.100 +12 54 29.79   20 17.25   16.00 ~ 24 0
10 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
11 NGC 4476 GiG 12 29 59.0772974472 +12 20 55.292203464 13.28 13.01 12.19     ~ 340 1
12 Z 42-135 LSB 12 30 00.350 +07 55 47.44   15.4       ~ 140 0
13 LEDA 41264 G 12 30 05.0700348600 +08 04 23.971869048   16.82 15.13     ~ 81 0
14 NGC 4478 GiP 12 30 17.4160005576 +12 19 42.790577160 12.82 12.36 11.45   10.17 ~ 508 1
15 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
16 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
17 NGC 4488 GiG 12 30 51.3727669680 +08 21 35.998048692   13.8       ~ 101 0
18 NGC 4492 GiG 12 30 59.7099543696 +08 04 40.424214828   14.1       ~ 139 0
19 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
20 NAME Virgo Extension GrG ~ ~           ~ 56 0

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