WIYN Integral-Field Kinematics of Disk Galaxies
| dc.creator | Bershady, Matthew | |
| dc.creator | Verheijen, Marc | |
| dc.creator | Andersen, David | |
| dc.date | 2002-01-24 | |
| dc.date.accessioned | 2026-07-07T02:02:30Z | |
| dc.date.available | 2026-07-07T02:02:30Z | |
| dc.description | We have completed a new fiber array, SparsePak, optimized for low-surface-brightness studies of extended sources on the WIYN telescope. We are now using this array as a measuring engine of velocity and velocity-dispersion fields of stars and ionized gas in disk galaxies from high to low surface-brightness. Here we present commissioning data on the velocity ellipsoids, surface densities and mass-to-light ratios in two blue, high surface-brightness, yet small disks. If our preliminary results survive further observation and more sophisticated analysis, then NGC 3949 has sigma_z/sigma_R >> 1, implying strong vertical heating, while NGC 3982's disk is substantially sub-maximal. These galaxies are strikingly unlike the Milky Way, and yet would be seen more easily at high redshift. | |
| dc.description | to appear in Disk Galaxies: Kinematics, Dynamics and Perturbations, eds. E. Athanassoula and A. Bosma, ASP Conference Series; 4 pages with 4 embedded figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0201407 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0201407 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/4056 | |
| dc.subject | Astrophysics | |
| dc.title | WIYN Integral-Field Kinematics of Disk Galaxies | |
| dc.type | text |