2016 - 2017 Astro Seminar Schedule

DateEvent TypeSpeakerTitle
09/23/2016Astro SeminarAshley ZaudererObservational Signatures of Tidal Disruption Events: Are Jets and Radio Emission Ubiquitous? [ + Description ]
09/30/2016Astro SeminarZoltan HaimanRapid Formation of the First Supermassive Black Holes [ + Description ]
10/07/2016Astro SeminarPeter GarnavichThe Earliest Hours of Supernovae with Kepler/K2 [ + Description ]
10/21/2016Astro SeminarRachel SommervilleThe impact of AGN driven winds on galaxy quenching, morphology, and structure [ + Description ]
11/04/2016Astro SeminarAdrian LiuThe Past, Present, and Future of 21cm Cosmology [ + Description ]
11/11/2016Astro SeminarPieter van DokkumExploring the low surface brightness sky with the Dragonfly Telephoto Array [ + Description ]
11/18/2016Astro SeminarJo BovyStellar streams and fundamental physics [ + Description ]
12/02/2016Astro SeminarSjoert van VelzenNew ways to study the tidal disruption of stars by supermassive black holes [ + Description ]
01/23/2017Astro SeminarMaryam ModjazStellar Forensics with the Most Powerful Explosions in the Universe [ + Description ]
01/27/2017Big Apple ColloquiumHiranya PeirisTowards Fundamental Physics from the Cosmic Microwave Background [ + Description ]
02/03/2017Astro SeminarPhilipp MoestaModeling the most powerful explosions in 3D [ + Description ]
02/10/2017Astro SeminarBenoit CotéConnecting Nuclear Astrophysics to Cosmological Structure Formation with Galactic Chemical Evolution [ + Description ]
02/17/2017Astro SeminarOr GraurRage against the dying of the light: what can we learn from three-year-old supernovae? [ + Description ]
03/10/2017Astro SeminarAna BonacaThe Milky Way halo in the Gaia era [ + Description ]
03/17/2017Astro Seminarn/ano astro seminar -- Spring Break [ + Description ]
03/24/2017Astro Seminarn/ano astro seminar -- prospective graduate student day [ + Description ]
03/31/2017Astro SeminarEmanuele CastorinaCosmology with Neutral Hydrogen [ + Description ]
04/07/2017Astro SeminarColin HillNew Information in Ancient Photons: Novel Approaches to CMB Secondary Anisotropies [ + Description ]
04/14/2017Astro SeminarRuth AngusUnlocking stellar ages with Gaia: prospects for galactic archaeology and exoplanet populations [ -- Description ]

Description: The processes behind the formation of the galaxy and the formation of exoplanets are two elusive and complicated topics in astrophysics connected by a common theme: stellar ages. Main sequence stars comprise the majority of our galaxy but unfortunately their ages are notoriously difficult to measure. Their positions on the HR diagram don't change significantly during their hydrogen burning lifetimes, a fact that is convenient for life on Earth but inconvenient for galactic archaeologists. Now, due to the abundance of rotation periods for MS stars provided by Kepler and to-be provided by TESS, LSST and Wfirst, rotation periods are the most readily available, precise age indicators. Rotation-dating works well for young stars but a question mark still hangs over its accuracy for stars older than the Sun. Gaia provides dynamical ages for thousands of stars, which can be used to test, and even calibrate the age-rotation relations. I will present methods for inferring! Probabilistic rotation periods from light curves and discuss a new age model that uses both rotation periods and dynamical information, applicable to the millions of stars ultimately observed by Gaia, Kepler, TESS, LSST and Wfirst. (11:00 AM, 726 Broadway, 940, CCPP Seminar)
04/21/2017Astro SeminarEliot QuataertThe Surprisingly Dynamic Last Years in the Lives of Massive Stars [ + Description ]
04/28/2017Astro SeminarAndy HowellA new window into supernovae and their progenitors with Las Cumbres Observatory [ + Description ]
05/19/2017Astro SeminarAbigail PolinModeling Sub-Chandrasekhar Mass White Dwarf Explosions [ + Description ]