Evidence for a two-armed spiral in the Milky Way
| dc.creator | Drimmel, R. | |
| dc.date | 2000-05-11 | |
| dc.date.accessioned | 2026-07-07T01:53:31Z | |
| dc.date.available | 2026-07-07T01:53:31Z | |
| dc.description | Emission profiles of the Galactic plane in K and at $240\micron$ are presented, and features associated with the tangents of the spiral arms are identified. In the K band, which traces stellar emission and suffers little from absorbtion, features associated with the arm tangents indicate that a two-armed logarithmic spiral dominates the nonaxisymmetric structure of the Milky Way. In contrast, the $240\micron$ emission from dust entrained in the interstellar gas is consistent with a four-armed model, in concordance with radio data and optical spiral tracers. This suggests that the non-axisymmetric mass perturbation responsible for the four-armed spiral structure in the gas has a two rather than four-armed structure. | |
| dc.description | 4 pages, 2 figures, accepted for publication by A&A Letters | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0005241 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0005241 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/993 | |
| dc.subject | Astrophysics | |
| dc.title | Evidence for a two-armed spiral in the Milky Way | |
| dc.type | text |