Colloquia Schedule Spring 2016

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

 
Jan. 19

"Spirals, Gaps, and Cavities: Signposts of Planets in Protoplanetary Disks?"

abstract

Robin (Ruobing) Dong

LBNL/Berkeley

host: Adam Kraus

Jan. 26

"The Key Influence of AGB Stars on the Evolution and Global Properties of Galaxies"

abstract

Martha L. Boyer

NASA Goddard

host: Kristen McQuinn

Feb. 2

"CAMPARE and Cal-Bridge: Two Synergistic Programs Forming a Successful New Model for Promoting Participation of Women and Underrepresented Minority Students in Astronomy"

abstract

Alexander L. Rudolph

California State Polytechnic University, Pomona

host: William Cochran

Feb. 9

"Exoplanet Atmospheres in High Resolution"

abstract

Jayne L. Birkby

Harvard-Smithsonian Center for Astrophysics

host: Daniel Jaffe

Feb. 16

"The Dynamical Evolution of Young Stellar Complexes in the Milky Way"

abstract

Alison I. Sills

McMaster University, Hamilton, ON

host: Natalie Gosnell

Feb. 23

"The Evolution of Galaxy Structural Properties"

abstract

Rachel Somerville

Rutgers University, Downsbrough Chair in Astrophysics

host: Shardha Jogee

Mar. 1

"A PHAT New Measurement of the High-Mass Stellar IMF"

abstract

Daniel Weisz

UC Berkeley/University of Washington

host: Michael Boylan-Kolchin

Mar. 8

"The Role of Dwarf-Dwarf Galaxy Interactions in Galaxy Assembly"

Massive galaxy mergers are an important mode of galaxy evolution and are observed to inspire intense starbursts, the growth of AGN, and significant rearranging of the galaxies' gas and dust. However, despite the fact that the majority of mergers at all epochs occur among low mass galaxies, whether these effects occur in the shallow gravitational potential wells of dwarf galaxies remains mostly uncharted territory. Mergers at low redshift in particular offer a high resolution look at a process that set the stage for galaxy assembly at earlier epochs when such low metallicity mergers were more frequent. I will present initial results and future plans for TiNy Titans, the first systematic study of a sample of interacting dwarf galaxies and the mechanisms governing their star formation and subsequent processing of the ISM. We find multi-wavelength evidence based on star formation rates, gas and dust content that mergers proceed substantially differently at low masses. Our survey further uncovers galaxy groups with only low-mass members, a discovery that appears to contradict predictions of structure formation from hydrodynamic cosmological simulations.

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Sabrina Stierwalt

NRAO/University of Virginia

host: Kristen McQuinn

Mar. 15

No colloquium scheduled. (Spring Break)

Mar. 22

"Exploring the z~2.3 Cosmic Web with 3D Lyman-Alpha Forest Tomography"

abstract

Khee-Gan Lee

UC Berkeley/LBNL

host: Caitlin Casey

Mar. 29

"Understanding Galaxy Evolution with Massive Starburst Galaxies"

abstract

Hai Fu

University of Iowa

host: Caitlin Casey

Apr. 5

"Implications from the Detection of the Binary Black Hole Inspiral GW150914"

abstract

Matthew Benacquista

University of Texas Rio Grande Valley

host: J. Craig Wheeler

Apr. 6

Stellar Seminar talk Date/Time: Wed., 12 Noon: "Title: TBA"

David Yong (Stellar Tinsley Scholar)

Mt. Stromlo Observatory, Australia

host: Fritz Benedict

Apr. 12

"The Calm Before the Storm: Exploring the Post Accretionary Doldrums Prior to the Late Heavy Bombardment"

abstract

William F. Bottke (Planetary Tinsley Scholar)

Southwest Research Instutite, Boulder, Colorado

host: Mike Endl/Judit Ries

Apr. 19

"Disk Galaxy Assembly Across Cosmic Time: Combining Magnitude-limited Survey with Gravitational Lensing"

abstract

Tiantian Yuan (Exgal Tinsley Scholar)

Australia National University

host: Chao-Ling Hung

Apr. 26

"The Discovery and Characterization of the Y Dwarfs"

abstract

Michael Cushing

University of Toledo

host: Brendan Bowler

May 3

"What can Binaries tell us about Planet Formation?"

abstract

Kaitlin M. Kratter (ISM Tinsley Scholar)

Steward Observatory, University of Arizona

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 argus@astro.as.utexas.edu.

15 April 2016
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