Astronomy 386S - Spring 2016

Seminar in Extragalactic Astronomy

Th 3:30 · RLM 15.316B · Not for credit in Spring 2016


Steven Finkelstein · RLM 16.210 · (512) 471-1483 · email

Schedule

Jan 21 Steven Finkelstein
University of Texas at Austin
Organizational Meeting.

Jan 28
No talk scheduled.

Feb 4 Steven Finkelstein
University of Texas at Austin
"Review Article: Observational Searches for Galaxies at z > 6"

abstract


Feb 11 Sarah Wellons
Harvard Center for Astrophysics (host: Michael Boylan-Kolchin)
"Identifying the Progenitors and Descendants of Compact Elliptical Galaxies with Cosmological Simulations"

abstract


Feb 18 Rachel Livermore
University of Texas at Austin
"Directly Observing Dwarf Galaxy Progenitors at z > 6 (or: Gravitational Lensing is Magic)"

Feb 25 Kristen McQuinn
University of Texas at Austin
"Galaxy Evolution at the Faint-end of the Luminosity Function"

abstract


Mar 03 Intae Jung
University of Texas at Austin
"Evidence for the Supression of Star-Formation in the Centers of Massive Galaxies at z = 4"

abstract


Mar 10
No talk scheduled.

Mar 17
No talk scheduled: Spring Break.

Mar 24 Chao-Ling Hung
University of Texas at Austin
"Connecting Dusty Starburst Galaxies and Proto Galaxy Clusters - A Case Study at z = 2.1"

Mar 31 Jonathan Florez
University of Texas at Austin
"Measuring the Properties of Void Galaxies in the ECO Survey using RESOLVE"

abstract


Apr 7 Caitlin Casey
University of Texas at Austin
Title: TBA

Apr 14 Neal Evans
University of Texas at Austin
Title: TBA

Apr 21 Sinclaire Manning
University of Texas at Austin
Title: TBA
  Sydney Sherman
University of Texas at Austin
Title: TBA

Apr 28 Enrique Lopez-Rodriguez
University of Texas at Austin
"Dusty Winds in Active Galactic Nuclei: An Infrared Polarimetric Approach"

abstract

  Lindsay Fuller
University of Texas, San Antonio
"Investigating the Dusty Torus of Active Galactic Nuclei Using SOFIA/FORCAST Photometry"

The unified model of active galactic nuclei (AGN) posits that all AGN are essentially the same type of object viewed from different lines of sight. Dust in the surrounding toroidal structure absorbs high-energy radiation and re-emits in the infrared (IR). We present new photometric observations at 31.5 micrometers from the 2.5-m Stratospheric Observatory for Infrared Astronomy (SOFIA) using the Faint Object infraRed CAmera for the SOFIA Telescope (FORCAST). Including the 31.5 micrometers photometric point in the spectral energy distribution (SED) modifies our model output for the radial extent of the AGN torus for 10 of 11 objects. Six (60%) show a decrease in radial extent while four (40%) show an increase. We tentatively detect extended 31.5 micrometers emission for the first time in our sample. We used Clumpy torus models to fit the nuclear IR SED and infer trends in the physical characteristics of the AGN torus for the sample. We used previous near- and mid-IR (NIR; MIR) 1-18 micrometers imaging and MIR 7.5-13 micrometers spectroscopic observations of 11 AGN to compute the nuclear SED of each galaxy.

close


May 5 Rebecca Tippens (2nd Year Defense)
University of Texas at Austin
Title: TBA