2003MNRAS.346.1031P


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST18:27:17

2003MNRAS.346.1031P - Mon. Not. R. Astron. Soc., 346, 1031-1040 (2003/December-3)

On the 3D dynamics and morphology of inner rings.

PATSIS P.A., SKOKOS C. and ATHANASSOULA E.

Abstract (from CDS):

We argue that inner rings in barred spiral galaxies are associated with specific 2D and 3D families of periodic orbits located just beyond the end of the bar. These are families located between the inner radial ultraharmonic 4:1 resonance and corotation. They are found in the upper part of a type-2 gap of the x1 characteristic, and can account for the observed ring morphologies without any help from families of the x1-tree. Due to the evolution of the stability of all these families, the ring shapes that are favoured are mainly ovals, as well as polygons with `corners' on the minor axis, on the sides of the bar. On the other hand, pentagonal rings, or rings of the NGC 7020-type hexagon, should be less probable. The orbits that make the rings belong in their vast majority to 3D families of periodic orbits and orbits trapped around them.

Abstract Copyright: 2003 RAS

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure

Simbad objects: 9

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Number of rows : 9

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 Anon 0106.7-3733 G 01 09.0 -37 17           ~ 1 0
2 2MASX J03223581+1457339 G 03 22 35.814 +14 57 33.92   15.7       ~ 9 0
3 M 95 GiP 10 43 57.733 +11 42 13.00 10.71 10.51 9.73 9.48   ~ 951 2
4 NGC 3367 Sy1 10 46 34.9540814677 +13 45 03.084131268 11.89 12.05 11.50     ~ 253 1
5 NGC 3450 GiG 10 48 03.618 -20 50 57.27   12.72   11.34   ~ 46 0
6 IC 4290 G 13 35 19.5805746954 -28 01 18.462769718   14.24   13.51 13.2 ~ 43 0
7 NGC 6782 GiG 19 23 57.935 -59 55 21.04   12.70 11.84 11.27 11.7 ~ 114 1
8 NGC 7020 GiG 21 11 20.0444875662 -64 01 30.994772079   12.81 11.48 11.27   ~ 70 0
9 NGC 7098 G 21 44 16.077 -75 06 40.83   12.33 11.37 10.84 11.5 ~ 77 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-18:27:17

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