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The Stellar Populations in the Central Parsecs of Galactic Bulges Central Stellar Populations
Marc Sarzi, Hans-Walter Rix, Joseph C. Shields +5
We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to have nebular emission i…
The Survey of Nearby Nuclei with STIS (SUNNS):Emission-Line Nuclei at Hubble Space Telescope Resolution
Joseph C. Shields, Hans-Walter Rix, Marc Sarzi +6
We present results from a program of optical spectroscopy for 23 nearby galaxy emission-line nuclei. This investigation takes advantage of the spatial resolution of the Hubble Spac…
Masses of star clusters in the nuclei of bulge-less spiral galaxies
C. J. Walcher, R. P. van der Marel, D. McLaughlin +6
In the last decade star clusters have been found in the centers of spiral galaxies across all Hubble types. We here present a spectroscopic study of the exceptionally bright (10^6…
Super massive black holes in spiral galaxies: HST/STIS observations for 3 new objects
L. Coccato, E. Dalla Bonta', M. Sarzi +3
We present long-slit HST/STIS measurements of the ionized-gas kinematics in the nucleus of three disk galaxies, namely NGC 2179, NGC 4343, NGC 4435. The sample galaxies have been s…
The V_c-sigma_c relation in high and low surface brightness galaxies
A. Pizzella, E. Dalla Bonta`, E. M. Corsini +3
We investigate the relation between the asymptotic circular velocity, V_c, and the central stellar velocity dispersion, sigma_c, in galaxies. We consider a new sample of high surfa…
The Nuclei of Late-type Spiral Galaxies
T. Boeker, C. -J. Walcher, H. -W. Rix +8
We summarize some recent results from our observational campaign to study the central regions of spiral galaxies of late Hubble type (Scd - Sm). These disk-dominated, bulgeless gal…