Sponsor: Buenaventura Section
Speaker: Dr. Marion F. Villenave of JPL/NASA/Caltech

Meeting Date: 04 May 2023
Time: 06:00 PM to 09:00 PM
Cost: This event is free but registration is required.
Location: 31416 Agoura Road Westlake Village, California
Reservations: IEEE
Summary:
To form giant planets during protoplanetary disk lifetime, small micron sized particles must grow rapidly to larger sizes. A full understanding of that process requires a detailed characterization of the radial and vertical structure of the gas-rich disks associated with forming young stars. Multi-wavelengths observations of protoplanetary disks, for example in the millimeter and near-infrared, allow to probe two widely separated grain sizes that are differently affected by dust evolutionary mechanisms. I will show that the modeling of multi-wavelength observations of disks allows to identify high density regions. Those are favorable for grain growth and allow to better understand the efficiency of planet formation in protoplanetary disks.

Bio: Dr. Villenave received her MSc in Engineering (2013-2017) from the Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-Supaéro), Toulouse, France, and MSc in Astrophysics (2016-2017) from Université Paul Sabatier, Toulouse, France. September 2020, she finished her PhD at IPAG in Grenoble, France on the study of the evolution of protoplanetary disks, using multi-wavelength observations. Marion spent two years of her thesis in Chile at the European Southern Observatory (ESO), where she learned to calibrate and use complex ALMA observations. She is also familiar with scattered light observation (with SPHERE or HST), and model both using radiative transfer. She is now NASA Postdoctoral Fellow at JPL.