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 |
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Feb 6 |
No talk scheduled |
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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 |
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 |
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 |
Mar 6 3:00 p.m. RLM 5.104 |
SPECIAL COLLOQUIUM Adam Ginsburg NRAO |
High-mass star and cluster formation in the Galaxy Star formation is the most important driver of galaxy evolution. Massive stars, those producing ionizing radiation and supernovae, shape the interstellar medium. They heat the gas, drive turbulence, and destroy clouds. Despite their clear importance, we do not know exactly where, how, and how often these stars form. Addressing these questions is an essential step toward a complete theory of star formation. I will present studies of star-forming environments in the Galactic plane, showing when and on which scales turbulence and stellar feedback are the dominant processes. In low-mass local regions, star formation is slow and reasonably well-understood and feedback is weak. In massive, dense protoclusters, stellar feedback affects different physical scales over time, first controlling local collapse conditions and then evaporating the stars' parent clouds. These high-mass protoclusters form stars efficiently. In our Galaxy's center, star formation is suppressed by enhanced turbulence, which we directly observe affecting gas temperature. I will conclude by discussing how ongoing high-resolution observations of accretion toward high-mass protostars will constrain the physical mechanisms governing star formation. |
Mar 13 |
Spring Break |
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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 |
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 |
Apr 24 |
No talk scheduled |
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May 1 |
No talk scheduled |
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9 December 2016
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