When:
Tuesday, October 21, 2014
4:00 PM - 5:00 PM CT
Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it
Audience: Faculty/Staff - Student - Public
Contact:
Liz Lwanga
(847) 491-3645
Group: Physics and Astronomy Astrophysics Seminars
Category: Academic
Title: “Tracing the Mass Flow in Clustered Star Forming Regions”
Speaker: Rachel Friesen, Dunlap Institute, University of Toronto
Host: Laura Fissel
Abstract:Most stars in our galaxy do not form in isolation. Instead, stars are born in groups and clusters embedded within dense filaments and clumps in molecular clouds. Many clustered star-forming regions share similar morphologies, where the greatest star formation rates are found within a central ‘hub’ of dense molecular gas, that is connected to streams or filaments of additional material. To understand how stars form in clusters, we need to understand how these filaments accrete mass from the surrounding environment, funnel mass to star-forming ‘hubs’, and fragment to form dense star-forming cores. I will present observational evidence of ongoing accretion of material onto dense filaments in a nearby young cluster, with derived mass accretion rates that are sufficient to trigger additional fragmentation and gravitational collapse. In particular, I will show how combining observations of gas dynamics and chemistry in star forming regions can be used to answer these questions.
Keywords: Physics, Astronomy, Astrophysics