Colloquia Schedule Spring 2015

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

Jan. 20

Tinsley Visiting Scholar: Planetary Group

"Habitability of Planets Orbiting M Dwarfs"

abstract

Rory Barnes

University of Washington

host: Mike Endl

Jan. 27

"The Elusive and Ionized Gas Surrounding the Magellanic System"

abstract

Kathleen Barger

Texas Christian University

host: Cyndi Froning

Feb. 3

"Probing the Nature of Accretion and Planet Formation in Protoplanetary Disks: Connecting Theory with ALMA Observations"

abstract

Jacob B. Simon

Southwest Research Institute (SwRI)

host: Neal Evans

Feb. 10

"The Large Reservoirs of Gas Around Galaxies"

abstract

Jessica Werk

UCO/Lick Observatory

host: Volker Bromm

Feb. 12
Thursday

Special Colloquium: "Insights into Galaxy Formation from z=15 to the Present Day"

abstract

Peter Behroozi

Space Telescope Science Institute (STScI)

host: John Kormendy

Feb. 17

"Towards a Complete Theory of Lyman-Alpha Transfer in and around Galaxies"

abstract

Mark Dijkstra

University of Oslo: Institute of Theoretical Astrophysics

host: Steve Finkelstein

Feb. 19
Thursday

Special Colloquium: "Three Problems in Trying to Form Galaxies (and how ISM Physics can Save Us)"

abstract

Desika Narayanan

Haverford College

host: Chris Sneden

Feb. 24

"The Local Universe as a Cosmology Laboratory"

abstract

Michael Boylan-Kolchin

University of Maryland

host: Volker Bromm

Feb. 26
Thursday

Special Colloquium: "New Tools for Galactic Archaeology from the Milky Way"

abstract

Gail Zasowski

Johns Hopkins University

host: Adam Kraus

Mar. 3

"Massive Galaxy Growth since Cosmic Noon"

abstract

Stijn Wuyts

Max Planck Institut fur Extraterrestrische Physik

host: Chris Sneden

Mar. 10

Tinsley Visiting Professor

"David vs. Goliath: Exploiting the Black Hole Mass Scale to Better Constrain Accretion Physics"

abstract

Sera Markoff

University of Amsterdam

host: Pawan Kumar

Mar. 17

Spring Break: March 16 - 20: no Colloquium being held this week.

Mar. 24

"MOSFIRE: the Multi-Object Spectrometer for Infrared Exploration at Keck Observatory"

MOSFIRE is a powerful and unique near-infrared (0.9-2.4 microns) instrument for the Keck 1 telescope on Mauna Kea. MOSFIRE is both a camera and a spectrograph. The camera can image a field of view of 6.1 x 6.1 arcminutes with 0.18 arcseconds per pixel sampling. Up to 46 objects in the central 6 x 4 arcminute field can then be isolated using a cryogenic configurable slitmask unit (CSU) located inside the vacuum chamber. When a mirror is switched to a diffraction grating, the spectra of all 46 objects are recorded simultaneously. For a slit width of 0.7 arcseconds (2.9 pixels), MOSFIRE achieves a resolving power of R~3,500. Observations are possible in the Y, J, H or K bands using only two grating settings, and a single HgCdTe 2K x 2K detector. Because of the cryogenic CSU, slit masks can be reconfigured under computer control in about six minutes. This unique mechanism completely eliminates the time and risk associated with a thermal cycle of the instrument to room temperature in order to exchange batches of previously-milled metal masks. Built by a consortium of UCLA, Caltech, UCSC and WMKO, together with industrial partners, MOSFIRE was a challenging instrument for many reasons. The project took almost 8 years to complete. I will describe how the most important problems were solved, and I will illustrate MOSFIRE's excellent on-sky performance. MOSFIRE has been in regular use by the community since February 2013.

close

Ian McLean

University of California, Los Angeles

host: Gregory Mace

Mar. 31

Tinsley Visiting Scholar: Stars Group

"SPHERE: the New High-contrast Imager for the ESO-VLT"

abstract

Raffaele Gratton

INAF - Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, Italy

host: Chris Sneden

Apr. 7

No talk scheduled.

Apr. 14

"Star-Formation Driven Molecular Superwinds as Understood from the Two Nearest Starburst Galaxies (and a Small Survey)"

abstract

Adam Leroy

Ohio State University

host: Neal Evans

Friday
12 noon
Apr. 17

Qualifying Exam/2nd-Year Defense

"Chemical Analyses of Metal-Poor Stars: A New Approach"

abstract

Marc Schaeuble

University of Texas at Austin

Apr. 21

"Tracking Planet Footprints in Dusty Disks"

abstract

Catherine Espaillat

Boston University

host: Adam Kraus

Monday
12 noon
Apr. 27

Qualifying Exam/2nd-Year Defense

"Connecting the Dots: Tracking Galaxy Evolution at 3 <= z <= 7 using Fixed Cumulative Number Density in SPH Simulations"

abstract

Jason Jaacks

University of Texas at Austin

Apr. 28

Tinsley Visiting Scholar: Extragalactic Group

"Early Galaxies: Alive, Dead, Transitioning and/or Active"

abstract

Stijn Wuyts

Max Planck Institut fur Extraterrestrische Physik

host: Shardha Jogee

Wed.
3 PM
Apr. 29

PhD Defense

"The Substellar Population of the Ophiuchus Star-Forming Region"

abstract

Michael Gully-Santiago

University of Texas at Austin

Thurs.
11 AM
Apr. 30

Qualifying Exam/2nd-Year Defense

"External Inverse-Compton Emission from Jetted Tidal Disruption Events"

abstract

Wenbin Lu

University of Texas at Austin

Fri.
1 PM
May 1

PhD Defense

"On the Nature of Emission from Relativistic Jets"

abstract

Patrick Crumley

University of Texas at Austin

Fri.
2 PM
May 1

Qualifying Exam/2nd-Year Defense

"The Structure of Class 0 Protostars: BHR71 in Herschel View"

abstract

Yao-Lun Yang

University of Texas at Austin

Mon.
10 AM
May 4

Qualifying Exam/2nd-Year Defense

"Title: TBA"

abstract

Kevin Jumper

University of Texas at Austin

Mon.
Noon
May 4

Qualifying Exam/2nd-Year Defense

"Peering Inside Galaxies in the First Two Billion Years"

abstract

Intae Jung

University of Texas at Austin

May 5

"Signatures of Neutron Star Mergers"

abstract

Brian Metzger

Columbia University

host: Pawan Kumar

Tue.
10 AM
May 19

Qualifying Exam/2nd-Year Defense

"Revealing Massive Galaxies at Comic Brunch"

abstract

Matthew Stevans

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 argus@astro.as.utexas.edu.

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