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Astronomy Colloquium - "The Cradles of Star and Planet Formation: Disks, Multiplicity, and Stellar Masses of Low to Intermediate-Mass Protostars"

Event Type
Seminar/Symposium
Sponsor
Department of Astronomy
Location
https://go.illinois.edu/AstronomyColloquiumVirtualLink
Virtual
wifi event
Date
Nov 2, 2021   3:45 pm  
Speaker
Dr. John Tobin, NRAO
Contact
Rebecca Bare
E-Mail
rsbare@illinois.edu
Phone
217-265-8226
Views
4
Originating Calendar
Astronomy Colloquium Speaker Calendar

The formation of disks and multiple star systems are integral parts of the star and planet formation process. Most stellar mass must be accreted through a disk, disks are the future sites of planet formation, and disks will also give rise to companion stars. Using ALMA and the VLA, we are conducting large surveys (with a molecular lines toward subsets) of protostars in the nearby Perseus and Orion star-forming regions (with 20-30 AU resolution) to characterize the disk radii, disk masses, and frequency of multiplicity throughout the protostellar phase. The molecular line data enable us to measure the masses of the protostars and we are beginning to identify and characterize the formation environments of both low and intermediate mass protostars. We find clear changes in multiplicity properties with evolution that link back to their formation mechanisms, establishing a foundation from which multiplicity evolution must begin.

 

Topic: Astronomy Department Colloquium
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