2005A&A...444..803G


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET00:58:42

2005A&A...444..803G - Astronomy and Astrophysics, volume 444, 803-812 (2005/12-4)

Harassment origin for kinematic substructures in dwarf elliptical galaxies?

GONZALEZ-GARCIA A.C., AGUERRI J.A.L. and BALCELLS M.

Abstract (from CDS):

We have run high resolution N-body models simulating the encounter of a dwarf galaxy with a bright elliptical galaxy. The dwarf absorbs orbital angular momentum and shows counter-rotating features in the external regions of the galaxy. To explain the core-envelope kinematic decoupling observed in some dwarf galaxies in high-density environments requires nearly head-on collisions and very little dark matter bound to the dwarf. These kinematic structures appear under rather restrictive conditions. As a consequence, in a cluster like Virgo ∼1% of dwarf galaxies may present counter-rotation formed by harassment.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: structure - methods: N-body simulations

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME NGC 3258 Group GrG 10 23 32.8 -34 45 30           ~ 15 0
2 2MASX J10372287-3521371 GiG 10 37 22.8524493652 -35 21 37.463899761   15.6       ~ 16 0
3 2MASX J12425631+0340355 GiG 12 42 56.3361318765 +03 40 35.751774971   15.1       ~ 41 0
4 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 172 0
5 2MASX J13150513-1620451 GiG 13 15 05.0953541956 -16 20 45.524925163   16.93 15.44     ~ 16 0
6 NAME Local Group GrG ~ ~           ~ 7188 0

    Equat.    Gal    SGal    Ecl

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2021.03.06-00:58:42

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