Sierk van Terwisga (MPIA): The SODA survey: an empirical view of disk destruction in Orion

When: Thursday, September 21, 2023, 3:30 PM - 4:30 PM
Where: G.O. Jones room 610 & online

Speaker: Sierk van Terwisga (MPIA)

The SODA survey: an empirical view of disk destruction in Orion

The ability of a protoplanetary disk to form planets depends on the evolution of their bulk (dust) mass reservoir. Surveys of nearby star-forming regions have revealed that there is a time dependence on
the disk dust mass. These regions, however, tend to be deficient in massive stars, and are thus not necessarily representative of the birthplaces of the average planetary system. Moreover, they contain relatively small numbers of stars. This makes it difficult to constrain weaker statistical trends that are, nonetheless, important for planet population syntheses.

In this talk, I discuss how the Orion A and B star-forming regions, containing thousands of disk-bearing stars, can provide us unique insight into the destruction of protoplanetary disks. Most of the results derive from the largest single survey of disk masses to date, an 873-disk sample of ALMA observations. We zoom in on the effect of FUV irradiation and the impact of possible multiplicity on disk masses.