145 citations · 251 across the 11 of their papers we have counts for
11 papers
Composite Bulges: The Coexistence of Classical Bulges and Disky Pseudobulges in S0 and Spiral Galaxies
Peter Erwin, Roberto P. Saglia, Maximilian Fabricius +6
We study nine S0-Sb galaxies with (photometric) bulges consisting of two distinct components. The outer component is a flattened, kinematically cool, disklike structure: a "disky p…
Using 3D Spectroscopy to Probe the Orbital Structure of Composite Bulges
Peter Erwin, Roberto Saglia, Jens Thomas +6
Detailed imaging and spectroscopic analysis of the centers of nearby S0 and spiral galaxies shows the existence of "composite bulges", where both classical bulges and disky pseudob…
Pseudobulges in Barred S0 Galaxies
Peter Erwin, John E. Beckman, Juan Carlos Vega Beltran
We present preliminary results from an ongoing study of the bulges of S0 galaxies. We show that in a subsample of 14 barred S0 galaxies, fully half the photometrically defined bulg…
When Is a Bulge Not a Bulge? Inner Disks Masquerading as Bulges in NGC 2787 and NGC 3945
Peter Erwin, Juan Carlos Vega Beltran, Alister W. Graham +1
We present a detailed morphological, photometric, and kinematic analysis of two barred S0 galaxies with large, luminous inner disks inside their bars. We show that these structures…
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…
Double Bars, Inner Disks, and Nuclear Rings in Barred Galaxies
Peter Erwin, Linda S. Sparke, Juan Carlos Vega Beltran +1
We present results of a high-resolution imaging survey of barred S0--Sa galaxies which demonstrate that the central regions of these galaxies are surprisingly complex. We see many…