Astronomy 381S - Spring 2017

Seminar in Theoretical Astrophysics

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

J. Craig Wheeler · RLM 17.230 · (512) 471-6407 · email

Schedule

Jan. 23	J. Craig Wheeler University of Texas at Austin	Organizational Meeting

Jan 30	No talk scheduled

Feb 6	No talk scheduled

Feb 13 3:00 p.m. RLM 5.104	SPECIAL COLLOQUIUM L. Ilsedore Cleeves Harvard-Smithsonian Center for Astrophysics	From Disks to Planets Through the Astrochemical Lens During the first few Myr of a young star's life, it is encircled by a disk made up of molecular gas, dust, and ice: building blocks of future planetary systems. How and when these disks form planets and what sets their initial composition remain key unanswered questions in disk science. In recent years, the Atacama Large Millimeter/Submillimeter Array (ALMA) has transformed our understanding of the chemical composition and physical properties of protoplanetary disks. Major advances in sensitivity and spatial resolution have revealed complex radial, vertical, and azimuthal structures in the dust and gas. In this talk, I will review recent observational results and new theoretical puzzles, highlighting the central role of energetic and ionizing processes originating from the host star and nearby stars, and discuss how these fit into the emerging, broader picture of the disk environment. Finally, I will describe future avenues to observationally connect the outer, cold disk reservoir to the inner, terrestrial planet-forming region with future infrared observations, along with new techniques to detect individual young protoplanets in situ. close

Feb 20 3:00 p.m. RLM 5.104	SPECIAL COLLOQUIUM Sanchayeeta Borthakur Johns Hopkins University	Role of Baryon Flows in Galaxy Evolution: Hidden Pathways Connecting Galaxies to the Cosmic Web abstract

Feb 27 3:00 p.m. RLM 5.104	SPECIAL COLLOQUIUM Kristen McQuinn The University of Texas at Austin	Low-Mass Galaxies: Windows into Galaxy Formation and Evolution abstract

Mar 6 3:00 p.m. RLM 5.104	SPECIAL COLLOQUIUM Adam Ginsburg NRAO	High-mass star and cluster formation in the Galaxy abstract

Mar 13	Spring Break

Mar 20	External Review	No talk scheduled

Mar 27	Sera Markoff University of Amsterdam	A combined approach to understanding black hole energy release: from micro- to macrophysics

Apr 3	Ken Chen National Astronomical Observatory of Japan	Lighting up the Universe with Extreme Supernovae abstract

Apr 10	Wenbin Lu The University of Texas at Austin	A more complete story of the jetted tidal disruption event Swift J1644+57

Apr 17	Mei-Yu Wang Texas A&M	Effects of Tides on Milky Way Dwarf Satellite Galaxies abstract

Apr 24	No talk scheduled

May 1	No talk scheduled