Strong non-circular motions of gas in the spiral galaxy NGC 1084
| dc.creator | Moiseev, A. V. | |
| dc.date | 1999-09-20 | |
| dc.date | 2000-09-09 | |
| dc.date.accessioned | 2026-07-07T02:33:23Z | |
| dc.date.available | 2026-07-07T02:33:23Z | |
| dc.description | The results of $H_α$ and [NII]$λ6583$ observations of the spiral galaxy NGC 1084 at the SAO 6m telescope with a Fabry-Perot interferometer are presented. The complex structure of the emission line profile has revealed the presence of giant star formation regions (``spur'') in the NE part of the galaxy. In this region the $H_α$ line shows two distinct components, with line-of-sight velocity differences of $\pm(100-150)\km$. The first component corresponds to normal circular rotation. The second velocity component may be a signature of non-circular motions of the ionized gas in shock wave fronts. An increase of the ${[NII]}/H_α$ line ratio confirms the shock wave interpretation of these features. The ionized gas kinematics in this galaxy is discussed. | |
| dc.description | 9 pages, 7-PS figures, Accepted to A&A, added 3 new figures and Comments | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9909341 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9909341 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14819 | |
| dc.subject | Astrophysics | |
| dc.title | Strong non-circular motions of gas in the spiral galaxy NGC 1084 | |
| dc.type | text |