Colloquia Schedule Fall 2014

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

Sep. 2

"Hot Chromospheres and Flares on Cool and Ultracool Dwarfs"


Sarah Jane Schmidt

Ohio State University

host: Adam Kraus

Sep. 9

"Let it Collide: An Epic Saga of Star Wars Planets, Planetesimals, and Super Planet Crashes"


Stefano Meschiari

University of Texas at Austin

host: Adam Kraus

Sep. 16

"The Complex Interplay between Star Formation and Galaxy Evolution from z~0-6"


Desika Narayanan

Haverford College

host: Steve Finkelstein

Sep. 23

"Compact Galaxies and Super-Massive Black Holes"


Remco van den Bosch

Max Planck Institute for Astronomy (MPIA), Heidelberg

host: Karl Gebhardt

Sep. 30

"The Architecture and Timing of Planetary Systems"


Daniel Fabrycky

University of Chicago

host: TBD

Oct. 7

"Who's Afraid of the Big Bad Supermassive Black Hole?"


Jonathan Trump

Pennsylvania State University

host: Steve Finkelstein

Oct. 14

"Puzzles in the Structure of Disk Galaxies"


Stephane Courteau

Queen's University, Kingston, Ontario, Canada

host: Karl Gebhardt

Oct. 21

"Galaxy Build-up in the First Gyr: Insights from ultra-deep HST and Spitzer Observations"


Pascal Oesch

Yale University

host: Steve Finkelstein

Oct. 28

"Forming Earths and Mercuries: Solids Less Volatile than Ice"


Alexander Hubbard

American Museum of Natural History, New York

host: Joel Green

Nov. 4

"Shedding Lyman Alpha Light on Cosmological Reionization"

Intergalactic hydrogen, which first became neutral near redshift 1100, was re-ionized somewhere between redshift 6 and 15. This marked the first global impact that gravitationally bound objects (stars and/or black holes) had on the universe around them, and also the last time that most hydrogen atoms did anything noteworthy. Understanding this reionization process in detail is now a frontier of observational cosmology. Lyman alpha photons are a powerful tool for studying reionization. They interact strongly with neutral hydrogen, so that neutral intergalactic gas acts to hide Lyman alpha light from our instruments.

I will discuss three ongoing surveys to study this epoch. The Deep And Wide Narrowband (DAWN) survey is an NOAO survey program to look for Lyman alpha emission at redshift 7.7, using the NEWFIRM camera on the 4m Mayall Telescope at Kitt Peak National Observatory. The First Light And Reionization Experiment (FLARE) is pursuing a corresponding survey at redshift 8.8, using the FourStar camera on the Magellan telescope. And the Faint Infrared Grism Survey (FIGS) is an HST Treasury Program to obtain the deepest near-IR slitless spectroscopy yet of high redshift galaxies, using the grisms on HST's WFC3-IR camera. I will summarize the applications of these projects to understanding reionization, along with other potential applications of their unique data sets.


James Rhoads

Arizona State University

host: Steve Finkelstein

Nov. 11

"From Disks to Planets: Observational Insights"


Andrea Isella

Rice University

host: Adam Kraus

Nov. 18

"The Giant Magellan Telescope Project: Science and Status"


Rebecca Bernstein

Giant Magellan Telescope (GMT)

host: Taft Armandroff

Nov. 25

"There's Government in Your Science"


Joshua H. Shiode

American Astronomical Society

host: Jeff Silverman

Dec. 2
3.30 PM
RLM 15.216B

DeVaucouleurs Medalist

DeVaucouleurs Lecture: "The Growth of Supermassive Black Holes and Galaxy Evolution"


C. Megan Urry

Yale University

host: Shardha Jogee

Dec. 3
4 PM
ECJ 1.202

DeVaucouleurs Medalist

Public Lecture: "Black Holes, Galaxies and the Evolution of the Universe: An Observer's View"


C. Megan Urry

Yale University

host: Shardha Jogee

Dec. 4
4 PM
NHB 1.404

DeVaucouleurs Medalist

CNS Pioneering Leadership Lecture Series: "Why So Few? The Dearth of Women in Science"


C. Megan Urry

Yale University

host: Shardha Jogee

Dec. 9

"Brown Dwarfs as Exoplanet Analogs"


Katelyn Allers

Bucknell University, Lewisburg PA

host: Adam Kraus

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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