Colloquia Schedule Spring 2012

Colloquia are on Tuesdays (unless otherwise indicated) at 3:30 pm in RLM 15.216B

Jan. 17

"Searching for Clues to the Black Hole-Galaxy Relationship Through Nearby AGN Surveys"


Lisa M. Winter

University of Colorado at Boulder

host: Shardha Jogee

Jan. 24

Tinsley Visiting Scholar (Stars Group)

"Heavy Element Nucleosynthesis in the Brightest Asymptotic Giant Branch Stars"


Amanda Karakas

Mt. Stromlo Observatory, Canberra, Australia

host: Harriet Dinerstein

Jan. 31

"Probing the Cosmic History of Star Formation in Galaxies with the Herschel Space Observatory and CCAT"


Jason Glenn

University of Colorado at Boulder

host: Shardha Jogee

Feb. 7

"New Observational Insights into Cosmic Reionization"


George Becker

University of Cambridge, Kavli Institute for Cosmology, UK

host: Milos Milosavljevic

Feb. 9

"Early Star Forming Galaxies and Reionization"


Daniel Stark

Steward Observatory, Arizona

hosts: Sally Dodson-Robinson & Shardha Jogee

Feb. 14

"Fueling Cosmic Star Formation: The Molecular Gas Mass Density of the Universe"


Dominik Riechers

California Institute of Technology

hosts: Shardha Jogee & Milos Milosavljevic

Feb. 21

"Direct Imaging of Exoplanets: Prospects for Comparative Exoplanetology"


Beth Biller

Max-Planck Institute for Astronomy, Heidelberg, Germany

host: Anita Cochran

Feb. 23

"Understanding Galaxy Evolution in the Early Universe"


Steven Finkelstein

University of Texas at Austin

host: Shardha Jogee

Feb. 28

"Giant Planets Caught at Formation"


Adam L. Kraus

University of Hawaii, Institute for Astronomy

host: Chris Sneden

Mar. 1

"The Dark Art of Detecting and Characterizing Planets by Direct Imaging"


Thayne Currie

NASA, Goddard Space Flight Center

host: Chris Sneden

Mar. 6

"Molecular spectroscopy of planet-forming regions: A quest to understand the diversity of planets and planetary systems"


Colette Salyk

National Optical Astronomy Observatory (NOAO)

host: Sally Dodson-Robinson

Mar. 13

Spring Break: 12 - 16 March. No Colloquium scheduled.

Mar. 20

No talk scheduled.

Mar 27

"Dark Matter Properties from the Faintest Galaxies"


Louis Strigari

Stanford University / Kavli Institute for Particle Astrophysics and Cosmology

host: Karl Gebhardt

Apr. 3
RLM 15.216B
3:30 PM

Antoinette de Vaucouleurs Medalist and Lecturer

"The Carnegie Supernova and Hubble Constant Projects"


Wendy Freedman

Director, Observatories of the Carnegie Institution for Science

host: Dan Jaffe

Apr. 4
ETC 2.136
4:30 PM

Antoinette de Vaucouleurs Medalist and Lecturer (visiting: 4/2-4/8)

Public Talk: "A Journey of Discovery: Our Expanding Universe"


Wendy Freedman

Director, Observatories of the Carnegie Institution for Science

host: Dan Jaffe

Apr. 10

"The ABCs of Low-Mass Stars"

M and (early-type) L dwarfs are the smallest, coolest and least massive stars in the Galaxy. Yet despite their diminutive physical properties, low-mass stars make up ~70% of all of the stars in the Milky Way and have main sequence lifetimes that exceed trillions of years. Their dominance in the Galaxy make M dwarfs excellent tracers of both the structure and evolution of the local Milky Way. In addition, low-mass dwarfs have intense stellar flares and strong magnetic fields that allow us to probe their interiors and may have important consequences for the habitability of planets that orbit them. I will present results from the largest samples of low-mass stars ever assembled. The advent of large surveys such as the Sloan Digital Sky Survey (SDSS) has yielded photometric and spectroscopic catalogs of more than 100 million and 70,000 stars respectively. Specifically, I will highlight work that has used the unprecedented statistical power of the SDSS to examine the structure and kinematics of low-mass dwarfs in the Milky Way, as well as the nature of their magnetic fields (and subsequent activity) and what this may tell us about the ages of stars. In addition, I will share some resent results from a survey that cataloged some of the widest binaries in the Milky Way and demonstrate how a large sample of M dwarfs has helped us map the three-dimensional distribution of dust in the local Galaxy.


Andrew West

Boston University

host: TBD

Apr. 17

"The History of Massive Galaxy Formation as a Cosmological Tool"


Christopher J. Conselice

University of Nottingham, UK

host: Shardha Jogee

Apr. 24

"Black Holes and Neutron Stars in the Local Universe"


Krzysztof Belczynski

University of Warsaw and University of Texas, Brownsville

host: Milos Milosavljevic

Apr. 25

Tinsley Visiting Professor (visiting: 4/23-5/17)

"The First Billion Years of our Universe"


Andrea Ferrara

Scuola Normale Superiore, Pisa, Italy

host: Volker Bromm

May 1

Texas Cosmology Center Distinguished Visitor

"Constraining Cosmology through the Growth of Structure: New Results from the South Pole Telescope"


John Carlstrom

University of Chicago

host: Eiichiro Komatsu

June 18
10 AM

PhD Defense Presentation

"Dark Matter Halos and Stellar Kinematics of Elliptical Galaxies"


Jeremy Murphy

University of Texas at Austin

July 24
1 PM

PhD Defense Presentation

"An Experiment in Integrated, Guided-Inquiry Science Classes and Implications for Teaching Astronomy"


Randi Ludwig

University of Texas at Austin

Aug 21
2 PM

PhD Defense Presentation

"Tests of the Episodic Mass Accretion Model for Low-Mass Star Formation"


Hyo Jeong Kim

University of Texas at Austin

Visitors to the Department of Astronomy can find detailed information and maps on our Visiting Austin Page.

Please report omissions/corrections to: G. Orris at


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