2017-18

"Declining rotation curves, missing baryons and the origin of turbulence: the puzzling properties of high-redshift disk galaxies" Abstract: The redshift 2 universe is one of the most interesting epochs of galaxy evolution. It is the era with the peak of...

"Modeling feedback effects from active galactic nuclei in galaxy scale simulations" Video of talk: Abstract: It is generally believed that feedback from active galactic nuclei (AGNs) has a significant impact on the formation and evolution of massive...

"The tide is turning in large scale structure" Abstract: Tidal effects have long been known to influence dark matter halo formation. Tidal effects on halo clustering are more subtle, but they do matter for precision cosmology. I'll describe recent work...

Jeremy Drake (CfA) “Stellar Coronal Mass Ejections: Coming soon to an exoplanet near you” Are recent superflares observed on Proxima Centauri and other stars harbingers of massive and energetic coronal mass ejections (CMEs)? Such CMEs would create extreme...

Suzan Edwards (Smith College) "Winds from Young Stars and their Accretion Disks" The simultaneous existence of accreting proto-planetary disks and accretion powered outflows from young stars has been known for some time. The winds that are the source of...

Ivan Cabrera (CfA), "The gas content of star clusters" Abstract: Studies during the last decade have revealed that nearly all Globular Clusters (GCs) host multiple populations (MPs) of stars with a distinctive chemical patterns in light elements. Young...

"Earth's Radiation Belt Electron Acceleration and Its Response to Solar Wind Drivers" Wen Li (Department of Astronomy/Center for Space Physics, Boston University) Earth’s Van Allen radiation belts, which extend from ~1,000 to ~60,000 km above the Earth’s...

Anna Rosen (ITC) Title: Gone with the wind: Where is the missing stellar wind energy from massive star clusters? Abstract: Star clusters larger than ∼103 M⊙ contain multiple hot stars that launch fast stellar winds. The integrated kinetic energy carried...

Xiawei Wang (Harvard) Self-sustaining star formation fronts in filaments during cosmic dawn Abstract: We propose a new model for the ignition of star formation in low-mass halos by a self-sustaining shock front in cosmic filaments at high redshifts. The...

Andrea Dupree Sleuthing Stellar Winds Stellar winds and mass loss affect stellar evolution, impact exoplanets and neighboring stars, and influence the stellar environment. Mass outflows and winds from stars are detected in many clever ways from the ground...