6 papers
Stellar Nuclear Rings in Barred Galaxies: Fossils of Past Circumnuclear Starbursts?
Peter Erwin, Juan Carlos Vega Beltran, John Beckman
We have found four barred S0 galaxies -- NGC 936, NGC 3945, NGC 4340, and NGC 4371 -- which contain smooth, luminous, purely stellar nuclear rings within their bars. These rings ha…
Kinematics and photometry as complementary tools in the study of barred galaxies
Juan Carlos Vega Beltran, Peter Erwin, John Beckman +4
Recent advances in observational techniques and theoretical modelling of galaxy kinematics allow us to use more than just optical morphology to discern the structure and dynamics o…
High-velocity clouds as dark matter in the Local Group
M. Lopez-Corredoira, J. E. Beckman, E. Casuso
The High-Velocity Clouds (HVCs) observed in the Galactic neighbourhood, have been proposed to be remnants of the formation of the galaxies in the Local Group, having distances, and…
Correlation between kinematics and Hubble Sequence in disk galaxies?
J. C. Vega Beltran, E. Pignatelli, W. W. Zeilinger +4
We present a comparison between ionized gas and stellar kinematics for a sample of 5 early-to-intermediate disc galaxies. We measured the major axis V and sigma radial profiles for…
Kinematics of Gas and Stars in Early-type Disk Galaxies
J. C. Vega Beltran, E. Pignatelli, W. W. Zeilinger +4
We present a comparison between ionized gas and stellar kinematics for a sample of 5 early-to-intermediate disk galaxies. We measured the major axis V and velocity dispersion radia…
Molecular gas observations and enhanced massive star formation efficiencies in M100
J. H. Knapen, J. E. Beckman, J. Cepa +1
We present new J=1-0 12-CO observations along the northern spiral arm of the grand-design spiral galaxy M100 (NGC 4321), and study the distribution of molecular hydrogen as derived…