Modeling the Mass Distribution in Spiral Galaxies
| dc.creator | Broeils, Adrick H. | |
| dc.creator | Courteau, Stephane | |
| dc.date | 1996-10-31 | |
| dc.date.accessioned | 2026-07-07T02:22:13Z | |
| dc.date.available | 2026-07-07T02:22:13Z | |
| dc.description | We use deep r-band photometry and Halpha rotation curves for a sample of 290 late-type spirals to model their mass distribution within the optical radius. We examine luminosity profile decompositions into bulge and disk carefully and confirm that bulge light is best modeled by a seeing-convolved exponential profile. The optical rotation curves are well-reproduced with a combination of bulge and "maximum" disk components only. No dark halo is needed. The disk mass-to-light ratios (M/L's) correlate with the "size" of galaxies, as measured by mass, luminosity, or disk scale length. Correcting for this scale effect yields a narrow distribution of intrinsic M/L's for this galaxy population. By combining these models with HI data for other samples, we confirm that the luminous mass fraction increases with galaxy "size". | |
| dc.description | 8 pages LaTeX, including 5 figures. Uses paspconf.sty, epsf.sty and natbib209.sty. To appear in "Dark and Visible Matter in Galaxies and Cosmological Implications", eds. M. Persic and P. Salucci, A.S.P. Conference Series. 1997 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9610264 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9610264 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10794 | |
| dc.subject | Astrophysics | |
| dc.title | Modeling the Mass Distribution in Spiral Galaxies | |
| dc.type | text |