The Intrinsic Ellipticity of Spiral Disks
| dc.creator | Andersen, David R. | |
| dc.creator | Bershady, Matthew A. | |
| dc.date | 2002-01-24 | |
| dc.date.accessioned | 2026-07-07T02:02:21Z | |
| dc.date.available | 2026-07-07T02:02:21Z | |
| dc.description | We have measured the distribution of intrinsic ellipticities for a sample of 28 relatively face-on spiral disks. We combine H-alpha velocity fields and R and I-band images to determine differences between kinematic and photometric inclination and position angles, from which we estimate intrinsic ellipticities of galaxy disks. Our findings suggest disks have a log-normal distribution of ellipticities (mean epsilon =0.06) and span a range from epsilon= 0 (circular) to epsilon=0.2. We are also able to construct a tight Tully-Fisher relation for our face-on sample. We use this to assess the contribution of disk ellipticity on the observed Tully-Fisher scatter. | |
| dc.description | 4 pages, 2 figures, to appear in "Disks of Galaxies: Kinematics, Dynamics and Perturbations" (ASP Conference Series), eds E.Athanassoula and A. Bosma | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0201406 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0201406 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/4055 | |
| dc.subject | Astrophysics | |
| dc.title | The Intrinsic Ellipticity of Spiral Disks | |
| dc.type | text |