229 citations · 232 across the 10 of their papers we have counts for
5 papers · 1 filter
Trends for Outer Disk Profiles
Peter Erwin, Michael Pohlen, Leonel Gutierrez +1
The surface-brightness profiles of galaxy disks fall into three main classes, based on whether they are simple exponentials (Type I), bend down at large radii (Type II, "truncation…
The Outer Disks of Early-Type Galaxies. I. Surface-Brightness Profiles of Barred Galaxies
Peter Erwin, Michael Pohlen, John E. Beckman
We present a study of 66 barred, early-type (S0-Sb) disk galaxies, focused on the disk surface brightness profile outside the bar region and the nature of Freeman Type I and II pro…
The Outer Structure of Galactic Disks: Connections Between Bars, Disks, and Environments
Peter Erwin, Michael Pohlen, John E. Beckman +2
Surface-brightness profiles for early-type (S0-Sb) disks exhibit three main classes (Type I, II, and III). Type II profiles are more common in barred galaxies, and most of the time…
Fabry-Perot Interferometry and Dynamics of Spiral Galaxies
Kambiz Fathi, John E. Beckman, Claude Carignan +1
We present two-dimensional Febry-Perot observations of emission-line distribution and kinematics in nearly spiral galaxies. We have developed and demonstrated the utility of a numb…
Chemical clocks for early-type galaxies
C. Carretero, A. Vazdekis, J. E. Beckman +1
We present a detailed stellar population analysis of 27 massive elliptical galaxies within 4 very rich clusters at redshift z~0.2. We obtained accurate estimates of the mean lumino…