Collisional Ring Galaxies in Small Groups
| dc.creator | Horellou, Cathy | |
| dc.date | 1999-10-01 | |
| dc.date.accessioned | 2026-07-07T02:33:36Z | |
| dc.date.available | 2026-07-07T02:33:36Z | |
| dc.description | The probability of plunging orbits is enhanced in groups of galaxies and indeed, observations show that ring galaxies, which are believed to form when a galaxy passes through the center of a larger rotating disk, are often found in small groups. Numerical simulations combined with a knowledge of the large-scale HI distribution provide strong constraints on the dynamical history of these systems and on the identity of the intruder. Here we present a numerical model of the Cartwheel which supports the suggestion that the most distant companion is the intruder. We also present high-resolution HI observations of the more irregular system Arp 119 that reveal a possible connection to the most distant companion. | |
| dc.description | 4 pages, LaTex, 2 figures. To be published in ASP Conference Series, proceedings of the IAU Colloquium 174 on "Small Galaxy Groups" edited by M. Valtonen and C. Flynn | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9910015 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9910015 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14909 | |
| dc.subject | Astrophysics | |
| dc.title | Collisional Ring Galaxies in Small Groups | |
| dc.type | text |