2015ApJ...805...32W


Query : 2015ApJ...805...32W

2015ApJ...805...32W - Astrophys. J., 805, 32 (2015/May-3)

On the formation of elliptical rings in disk galaxies.

WU Y.-T. and JIANG I.-G.

Abstract (from CDS):

N-body simulations of galactic collisions are employed to investigate the formation of elliptical rings in disk galaxies. The relative inclination between disk and dwarf galaxies is studied with a fine step of 5°. It is confirmed that the eccentricity of elliptical rings is linearly proportional to the inclination angle. Deriving from the simulational results, an analytic formula that expresses the eccentricity as a function of time and inclination angle is obtained. This formula will be useful for the interpretation of observations of ring systems, and therefore reveals the merging histories of galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: stellar content - galaxies: structure

Simbad objects: 4

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Number of rows : 4
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 NGC 922 EmG 02 25 04.400 -24 47 17.46   12.54 12.21 11.84   ~ 161 1
2 IC 298 PaG 03 11 18.90 +01 18 53.0   15.5       ~ 74 0
3 NAME Auriga's Wheel G 06 47 02.3 +45 54 00           ~ 10 1
4 NAME Hoag's Object G 15 17 14.4068658744 +21 35 07.856255652   15.8 15.1     ~ 57 0

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