Colloquia Schedule Spring 2014

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

Jan. 14

No talk scheduled.


Jan. 21

"The Connection between Star Formation and the Cold Interstellar Medium in Nearby Galaxies"


Karin Sandstrom

University of Arizona

host: Shardha Jogee

Jan. 28

"The Unusual Eclipser of the Young Star J1407: Moon-forming Circumplanetary Disk?"


Eric Mamajek

University of Rochester

host: TBA

Feb. 4

"A Calibration of the Stellar-mass Fundamental Plane at z = 0.4 using the Micro-lensing Induced Flux Ratio Anomalies of Macro-lensed Quasars"

So-called "stellar" masses for early type galaxies are almost always determined by one of two methods: either they are estimated from spectra (and sometimes only broad band colors) or they are deduced by subtracting the contribution of an assumed dark matter profile from a combined mass inferred from kinematic (and sometimes macro-lensing) measurements. Both methods have shortcomings. We describe a third method: the analysis of flux ratio anomalies caused by the micro-lensing of quadruply imaged quasars by the stellar graininess of the lensing galaxy (Schechter and Wambsganss 2004). We use X-ray observations from the Chandra Observatory (Pooley et al 2012) to measure flux ratio anomalies and the "stellar mass fundamental plane" of Hyde and Bernardi (2009) to average results obtained at different radii from galaxies of different sizes and at different redshifts. We infer limits on the underlying stellar intial mass function.


Paul L. Schechter

Massachusetts Institute of Technology

host: Pawan Kumar

Feb. 11

Tinsley Visiting Scholar, Interstellar Matter Group

"Volatiles in Protoplanetary Disks"


Klaus Pontoppidan

Space Telescope Science Institute (STScI)

host: Neal Evans

Feb. 18

DeVaucouleurs Medalist: COLLOQUIUM

"Connecting Gas to Stars in Galaxies"


Robert C. Kennicutt, Jr.

University of Cambridge, UK

host: Neal Evans

Feb. 19
CPE 2.208
4:00 PM

DeVaucouleurs Medalist: PUBLIC LECTURE

"The Hidden Universe Revealed"


Robert C. Kennicutt, Jr.

University of Cambridge, UK

host: Neal Evans

Feb. 25

"The Seeds of Massive Galaxies"


Sadegh Khochfar

University of Edinburgh

host: Shardha Jogee

Mar. 4

"Our Galactic Supermassive Black Hole Sgr A*: The Ideal Testbed for Theories of Accretion and Black Hole Life Cycles"


Sera Markoff

University of Amsterdam

host: Pawan Kumar

Mar. 11

Spring Break: 10-14 March: No talk scheduled.

Mar. 18

"Rest-frame Optical Spectra: A Window into Galaxy Formation at z~2"


Alice E. Shapley

University of California, Los Angeles

host: Steve Finkelstein

Mar. 25

Tinsley Visiting Scholar, Stars Group

"Hunting the First Generations of Stars and Galaxies"


Anna Frebel

Massachusetts Institute of Technology

host: Fritz Benedict

Apr. 1

"Shadows of Their Future Selves: Accretion and Obscuration in Young Stellar Objects"


Kevin R. Covey

Lowell Observatory

host: Adam Kraus

Apr. 8

"Head in the Clouds: Decoding the Spectral Features Produced by Brown Dwarf and Exoplanent Atmospheres"


Kelle Cruz

Hunter College/AMNH

host: Adam Kraus

Apr. 15

"Hunting the First Galaxies with Gravitational Lensing"


Dan A. Coe

Space Telescope Science Institute (STScI)

host: Steve Finkelstein

Apr. 22

Tinsley Visiting Professor

"Adventures in Cosmic Star Formation"


Mark E. Dickinson

National Optical Astronomy Observatory (NOAO)

host: TBA

Apr. 23
3 PM

Tinsley Visiting Scholar, Exgal Group

"MaNGA: Mapping Nearby Galaxies at Apache Point Observatory An IFU Survey of 10,000 Galaxies"


Kevin A. Bundy

University of Tokyo, IPMU

host: Niv Drory

Apr. 25
2 PM

Tinsley Visiting Scholar, Planets Group

"Extrasolar Planets with Small Telescopes"


Gaspar Bakos

Princeton University

host: Mike Endl

Apr. 29

Title: TBA


Milos Milosavljevic

University of Texas at Austin

host: TBA

May 6

Title: TBA


Eugene Oks

Auburn University

host: Don Winget

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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