6 papers
Galaxy Kinematics with SALT
Matthew A. Bershady, Marc A. W. Verheijen, David R. Andersen +2
The combination of dynamical and photometric properties of galaxies offers a largely un-tapped source of information on how galaxies assembled and where stars formed. Bi-dimensiona…
The Kinematics in the Cores of Low Surface Brightness Galaxies
R. A. Swaters, M. A. W. Verheijen, M. A. Bershady +1
Systematic effects on HI and Halpha long-slit observations make a measurement of the inner slope of the dark matter density distribution difficult to determine. Halos with constant…
WIYN Integral-Field Kinematics of Disk Galaxies
Matthew Bershady, Marc Verheijen, David Andersen
We have completed a new fiber array, SparsePak, optimized for low-surface-brightness studies of extended sources on the WIYN telescope. We are now using this array as a measuring e…
Reconciling Damped Ly-alpha Statistics and 21cm Studies at z=0
Martin Zwaan, Frank Briggs, Marc Verheijen
Blind 21cm surveys in the local universe have shown that the local HI mass density, Omega_HI, is dominated by luminous, high surface brightness, spiral galaxies. On the other hand,…
The HI mass function in Ursa Major
Marc Verheijen, Neil Trentham, Brent Tully +1
A deep blind HI survey of the nearby spiral rich Ursa Major cluster has been performed with the VLA in parallel with a wide-field R-band imaging campaign of most VLA fields with th…
Bimodality of Freeman's Law
R. Brent Tully, Marc A. W. Verheijen
A cluster sample of 62 galaxies complete to M(B)=-16.5 mag has been observed at B,R,I,K' bands with imaging detectors. The distribution of exponential disk central surface brightne…