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Constraining the Movement of the Spiral Features and the Locations of Planetary Bodies within the AB Aur System


Jamie Lomax (University of Washington)

November 28, 2017 @ 12:00 PM - 1:00 PM

The circumstellar disk around the Herbig Ae star AB Aur has many interesting features, including spirals, asymmetries, and non-uniformities. However, comparatively little is known about the envelope surrounding the system. Recent work by Tang et al (2012) has suggested that the spirals in the disk may instead be due to areas of increased density in the envelope and projection effects. I will report polarimetric modeling results of AB Aur designed to begin to place constraints on properties of the envelope such as infall rate and cavity opening angle, compare our results to observations in order to determine the origin of the spiral structures, and place constraints on the location of planetary bodies within the system.