The mass distribution in the innermost regions of Spiral Galaxies

Abstract

We use high-spatial resolution ($\sim 100pc$) rotation curves of 83 spiral galaxies to investigate the mass distribution of their innermost kpc. We show that, {\it in this region}, the luminous matter completely accounts for the gravitational potential and no dark component is required. The derived I-band disk mass-to-light ratios agree well with those obtained from population synthesis models and correlate with color in a similar way. We find strict upper limits of $\sim 10^7{M}_{\odot }$ for the masses of compact bodies at the center of spirals, ruling out that these systems host the remnants of the quasar activity.

18 pages, 5 figures, accepted

Cited by in corpus (13)

• Stellar mass-to-light ratios and the Tully-Fisher relation
• The distribution of dark matter in galaxies
• On the Mass-to-Light ratio and the Initial Mass Function in disc galaxies
• Cores of Dark Matter Halos Correlate with Disk Scale Lengths
• Dark matter within high surface brightness spiral galaxies
• Towards a Complete Census of AGNs in Nearby Galaxies: The Incidence of Growing Black Holes
• Kinematic constraints on the stellar and dark matter content of spiral and S0 galaxies
• The Disk Mass of Spiral Galaxies
• Constraints on interacting dark energy models from galaxy Rotation Curves
• The mass distribution in Spirals
• The mass distribution in Spiral galaxies
• Outer and inner mass distributions of the irregular galaxies UGC 4284 and UGC 11861: Constraining the baryonic content through stellar population synthesis studies
• Dark Matter Universal Properties in Galaxies