Astronomy 386S - Spring 2017

Seminar in Extragalactic Astronomy

Th 3:30 · RLM 15.316B · Not for credit Spring 2017

Steven Finkelstein · RLM 16.210 · (512) 471-1483 · email

Schedule

Jan. 19	Steven Finkelstein The University of Texas at Austin	Organizational Meeting

Jan 26	Extragalactic discussion group

Feb 2	Khan Asad SKA South Africa	Polarization Leakage in Epoch of Reionization Windows abstract

Feb 9 RLM 5.104	SPECIAL COLLOQUIUM Keith Hawkins Columbia University	Galactic Archaeology with Spectroscopy and Gaia abstract

Feb 16 RLM 5.104	SPECIAL COLLOQUIUM Brendan Bowler The University of Texas at Austin	Revealing the Formation and Atmospheres of Exoplanets with Direct Imaging abstract

Feb 23 RLM 5.104	SPECIAL COLLOQUIUM Stella Offner UMass Amherst	Towards a Unified Model for Star Formation: Forging Order from Randomness Astronomy has entered a new era of survey science in which large statistical samples can be scrutinized with unprecedented resolution. However, moving beyond the study of individual objects has revealed fresh puzzles. Three recent observations of protostars and molecular clouds pose a challenge to current star formation models. First, protostellar outflows appear to be randomly oriented with respect to the local magnetic field. Second, forming binary pairs have uncorrelated orientations. Finally, shells identified in molecular clouds suggest stellar winds are much stronger than models predict. I will present magnetohydrodynamic simulations addressing each of these observations and show how synthetic observations and machine learning are essential tools for dissecting and addressing these puzzles. I will discuss how these three results shed light on the role of magnetic fields in star formation, the origin of stellar multiplicity and the evolution of molecular clouds and, altogether, help pave the way for a unified theory of star formation. close

Mar 2 RLM 5.104	SPECIAL COLLOQUIUM Gregory Herczeg Kavli Institute for Astronomy and Astrophysics at Peking University	The Evolution of Protoplanetary Disks and Their Host Stars abstract

Mar 9	Matthew Shetrone The University of Texas at Austin	Making the most of the HET using the Phase II and Phase III interfaces

Mar 16	Spring Break

Mar 23	Caitlin Casey The University of Texas at Austin	Dusty Star-Forming Galaxies in the Early Universe

Mar 30	Jackie Champagne The Univeristy of Texas at Austin	Title: TBA

Apr 6	No talk scheduled

Apr 13	Sydney Sherman The Univeristy of Texas at Austin	Investigating Galaxy Growth at the Peak of Cosmic Star Formation (Second Year Defense)

Apr 20	Matt Stevans The University of Texas at Austin	Title: TBA

Apr 27	Rebecca Tippens The Univeristy of Texas at Austin	Investigating planar distributions of satellites around Local Group analogs

May 4	No talk scheduled