5 papers · 1 filter
The Correlation Between Supermassive Black Hole Mass and the Structure of Ellipticals and Bulges
Peter Erwin, Alister W. Graham, Nicola Caon
We demonstrate a strong correlation between supermassive black hole (SMBH) mass and the global structure of ellipticals and bulges: more centrally concentrated bulges and elliptica…
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…
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…
A WIYN Survey of Early-Type Barred Galaxies: Double Bars and Central Structures
Peter Erwin, Linda S. Sparke
We present results from a preliminary analysis of a recently-completed, multicolor imaging survey of nearby, early-type barred galaxies in the field, carried out with the WIYN tele…