Colloquia Schedule Spring 2011

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

Jan. 18

Dust in the Early Universe

abstract

Raffaella Schneider

INAF/Osservatorio Astronomico di Roma

host: Volker Bromm

Jan. 25

Magnetic Relaxation in ICM Bubbles and the Magnetic Flux Problem in Star Formation

abstract

Jonathan Braithwaite

University of Bonn (TCC Tinsley Scholar)

host: Craig Wheeler

Feb. 1

Reading the Record of Ancient Impacts

abstract

Peter Goldreich

California Institute of Technology

host: Pawan Kumar

Feb. 8

Star Formation in Galaxy Clusters Over the Past 10 Billion Years

abstract

Kim-Vy Tran

Texas A&M University and University of Zurich

host: Neal Evans

Feb. 11-12

McDonald Observatory Board of Visitors Meeting (Austin)


Feb. 12
1-2 PM
ACE 2.302

19th Annual Great Lecture in Astronomy

Exploring Newly Discovered Worlds with the Giant Magellan Telescope

abstract

Daniel Jaffe

University of Texas at Austin

Feb. 15

Is Inhomogeneity Important in Cosmology?

abstract

George F. R. Ellis

University of Cape Town

host: Tanja Rindler-Daller

Feb. 16
Wed.
3:15 PM

Exploration of the Circum-Galactic Medium at High Redshifts

abstract

Charles Steidel

California Institute of Technology (Tinsley Visiting Professor)

host: Karl Gebhardt

Feb. 22

Clarifying our View of Star Formation in Extreme Environments with Adaptive Optics

abstract

Jessica Lu

California Institute of Technology

host: Jenny Greene

Mar. 1

DeVaucouleurs Medalist

Chemical Abundances in the Oldest Galactic Stars: Globular Clusters vs. the Halo Field

This is a review of the quest to determine the chemical abundances of the oldest stars in the Galaxy, the members of the halo field and globular cluster populations. From forty years of spectroscopic studies, it appears that cluster and field stars are not chemically identical but differ significantly especially in the behavior of O, Na, Mg and Al. We explore both deep mixing and primordial abundance variations as explanations for these differences, and find that both are needed. The unusual abundance ratios of the Mg isotopes found in some clusters points to the importance of a primordial "pollution" scenario involving the output of intermediate mass AGB (asymptotic mass branch) stars. We discuss briefly scenarios for the formation of the Galactic halo.

close

Robert Kraft

UCOLICK

host: Chris Sneden

Mar. 8

DEEP2 and Beyond: Studying Galaxy Evolution and Large-Scale Structure with Deep Surveys

abstract

Jeffrey A. Newman

University of Pittsburgh (TCC Visiting Speaker)

host: Eiichiro Komatsu

Mar. 15

Spring Break: 14-18 March: No talk scheduled


Mar. 22

Diverse Energy Sources for Supernovae

abstract

Lars Bildsten

UCSB/Kavli Institute for Theoretical Physics (Tinsley Visiting Professor)

host: Donald Winget

Mar. 24
Public Talk
RLM 4.102
7:00 PM

Exploding Stars!

abstract

Lars Bildsten

UCSB/Kavli Institute for Theoretical Physics (Tinsley Visiting Professor)

host: Donald Winget

Mar. 29

Recent Advances in our Understanding of Enigmatic Gamma-ray Bursts

abstract

Pawan Kumar

University of Texas at Austin

host: TBD

Apr. 5

Physical Properties of Kepler's Small Exoplanets

abstract

Dimitar D. Sasselov

Harvard-Smithsonian Center for Astrophysics

host: Jenny Greene

Apr. 12

The Physical Properties of Lyman-alpha Emitters from z=2 to 3

abstract

Caryl Gronwall

Pennsylvania State University

host: Karl Gebhardt

Apr. 19

Thermal Tides: An Explanation for the Inflated Radii of the Hot Jupiters

abstract

Aristotle Socrates

Institute for Advanced Study, Princeton

host: Jenny Greene

Apr. 26

Magnetic Reconnection and the Evolution of Large Scale Magnetic Fields

abstract

Ethan Vishniac

McMaster University, Ontario, Canada

host: Craig Wheeler

May 3

Title: TBA

Speaker: TBD

Affiliation: TBD

host: TBD

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 argus@astro.as.utexas.edu.

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