2002ApJ...580..705K


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST07:30:16

2002ApJ...580..705K - Astrophys. J., 580, 705-717 (2002/December-1)

``Sloshing'' librations in lopsided disk galaxies.

KORNREICH D.A., LOVELACE R.V.E. and HAYNES M.P.

Abstract (from CDS):

A combined particle-mesh N-body/gridded hydrodynamics/stellar evolution code is employed to model the response of a galaxy disk to an impulsive perturbation. The resulting galaxy is examined for asymmetry in morphology and dynamics to answer the question of whether free ``sloshing'' librations in the plane of the disk can explain the relatively large proportion of asymmetric field spirals. The simulation produced a perturbed disk containing streamers of gas and stars, gas shocks, and m=1 and m=2 spiral structure. Strong kinematic peculiarities were generated as well. However, although the resulting disk reproduced many of the kinematic features observed in H I synthesis maps, the effects are relatively short-lived, lasting only on the order of a dynamical timescale. The similarities between the model and the tidally deformed galaxy NGC 5474, however, do leave open the possibility of forced sloshing modes playing a role in galaxies undergoing tidal interactions.

Abstract Copyright:

Journal keyword(s): Galaxies: Kinematics and Dynamics - Galaxies: Structure - Stellar Dynamics

Simbad objects: 8

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Number of rows : 8

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 NGC 991 LSB 02 35 32.6834126656 -07 09 15.840635679   12.36   12.7 12.6 ~ 134 1
2 NGC 1042 GiP 02 40 23.9725496856 -08 26 00.749394900 11.47 11.56 11.02 11.7 11.4 ~ 221 1
3 NGC 1073 EmG 02 43 40.598 +01 22 33.13   11.3   11.3 11.8 ~ 305 0
4 UGC 6429 GiG 11 25 19.047 +63 43 45.41   14.1       ~ 45 0
5 NGC 4688 GiP 12 47 46.5238842013 +04 20 09.734676195   14.5       ~ 150 1
6 NGC 5474 GiP 14 05 01.608 +53 39 43.95   11.28 10.79     ~ 384 1
7 NGC 5701 GiG 14 39 11.0762411300 +05 21 48.498854025 12.03 11.76 10.88     ~ 221 1
8 UGC 12742 G 23 41 49.5988341298 +44 58 25.187321950   15.5       ~ 12 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-07:30:16

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