2017 - 2018 Astro Seminar Schedule

DateEvent TypeSpeakerTitle
09/08/2017Astro SeminarMarcel SchmittfullFundamental physics from the nonlinear Universe [ + Description ]
09/15/2017Astro SeminarNicholas BattagliaLarge-Scale Structure Information Encoded in CMB Photons [ + Description ]
09/22/2017Astro SeminarVivian PoulinCosmological signatures of exotic electromagnetic energy injection [ + Description ]
09/29/2017Astro SeminarTjitske StarkenburgThe diverse history of counterrotating galaxies [ -- Description ]

Description: Current and upcoming IFU and HI surveys will provide us with a wealth of kinematic information that could give clues to the evolutionary and environmental history of individual galaxies. Extreme kinematics like counter-rotation of gas or stars is particularly interesting as this can provide additional dynamical or evolutionary constraints. There is however no statistical prediction of the occurrence, properties and possible origin of counter-rotating galaxies within the concordance cosmological framework. I will present a study of these issues using the Illustris cosmological simulation. We predict the general occurrence and properties of counter-rotating galaxies over a large range in stellar mass. Additionally, we focus in detail on the evolutionary history of 5 disky sub-L* galaxies that show extremely clear gas disk-stellar disk counterrotation. These specific galaxies are selected as analogues to an observational sample of counter-rotating dwarf galaxies carried on with Keck. I will summarize the several mechanisms identified as origin of counter-rotation in low mass galaxies, and discuss possible links between counter-rotation and a galaxy’s evolutionary history. (11:00 AM, 726 Broadway, 940, CCPP Seminar)
10/06/2017Astro SeminarMansi KasliwalThe Dynamic Infrared Sky [ + Description ]
10/20/2017Astro SeminarJulie ComerfordAGN Fueling and Feedback in Galaxies [ + Description ]
10/27/2017Astro SeminarRenee HlozekNew cosmology with small-scale CMB data: ultra light dark matter, isocurvature and cosmic voids [ + Description ]
11/03/2017Astro SeminarJames PeeblesA Tale of Two Theories: Missing Mass in 1980 and Galaxy Formation Today [ + Description ]
11/10/2017Astro SeminarMatias ZaldarriagaThe spin of the black holes detected by LIGO [ + Description ]
11/17/2017Astro SeminarSarah PearsonThe Milky Way’s Galactic bar can punch holes in stellar streams [ + Description ]
12/01/2017Astro SeminarVera GluscevicTBA (Theoretical Cosmology) [ + Description ]
12/08/2017Astro SeminarIlsedore CleevesTBA (planetary astronomy) [ + Description ]
01/19/2018Astro Seminar[none]No seminar this week; competing event at Flatiron CCA [ + Description ]
02/09/2018Astro SeminarJackie FahertyTBA (low-mass stars) [ + Description ]
04/13/2018Astro SeminarChris HaywardTBA (galaxy formation) [ + Description ]