22 March 2001CfA Colloquium

Title: Tracing the Evolution of Disks around Young Stars

Speaker: Anneila I. Sargent

Abstract: Circumstellar disks appear to occur naturally as stars form. Young disk properties are such that it has been postulated that these are the reservoirs of material which other planetary systems are born. While it is now clear that other planetary systems exist, the evolutionary path from optically thick disks to planet formation is still unclear, and the dissipation time scales for circumstellar dust and gas are uncertain. Relevant observations at millimeter and infrared wavelengths will be presented and discussed.

Reference for students:

"Circumstellar Disks and the Search for Neighboring Planetary Systems" Beckwith, S.V.W. & Sargent, A.I. 1996 Nature 383 139

In Protostars and Planets IV (eds. Mannings, Boss and Russell): Chapters by Mundy et al (p 355), Calvet et al (p 377), Hollenbach et al (p 401), and Wilner & Lay (p509).

Lunch with the students is at 12:00 on Friday, March 23rd in A-101.