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 abstract

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 Using detailed observations of the Local Group to study wide-ranging questions in galaxy formation and dark matter physics has become a rich field over the past decade. I will discuss frameworks that address some of these questions by combining high-precision stellar kinematic measurements with state-of-art cosmological hydrodynamical N-body simulations. I will demonstrate that the properties of satellite galaxy dark matter subhalo implied by stellar kinematic data can be linked to the environmental effects such as infall time and the gravitational tidal interaction with Milky Way potential. In the cold dark matter (CDM) scenario, some dwarf galaxies show influences under significant gravitational tidal forces, which may leave imprints on their stellar distribution and kinematics. I will discuss how these features could serve as tests to the nature of dark matter or stellar feedback strength. I will also discuss how we can study those tidally “disturbed” or even “destroyed” satellite galaxies as building blocks to our Milky Way stellar halo by understanding the properties of their progenitors and observation limits imposed by current data. close

Apr 24	No talk scheduled

May 1	No talk scheduled