CfA Colloquium Schedule Spring 2014
 30 January 2014

30 January 2014

Speaker: Eric Feigelson (Penn State)

Title: MYStIX: A New Look at Clustered Star Formation

Abstract: The formation of rich star clusters is poorly understood: Do they form quickly or slowly? Do they form as a coherent structure or by merging subclumps? How does OB stellar feedback affect the molecular environment? Progress has been slow in part due to the weakness of a stellar census in massive star forming regions inhibited by crowding, HII region nebulosity, and contamination by Galactic field stars. I describe a new project, Massive Young Star-Forming Complex Study in Infrared and X-ray that combines X-ray sources from the Chandra X-ray Observatory and infrared sources from UKIRT and Spitzer Space Telescope to produce a catalog of >30,000 young stars in 20 Galactic star-forming regions at distances 0.4-4 kpc. Early results include: diversity in star clusters morphology and mass segregation; dynamical expansion of clusters; age gradients across star formation regions and within rich clusters; and new evidence for the destruction of protoplanetary disks by OB stars.


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