Poster Presentation
What Sub-mm and Mid-IR Variability of Protostars Tells Us about the Accreting Disks of Deeply Embedded Protostars
Presenter: Douglas Johnstone (National Research Council Canada: Herzberg Astronomy and Astrophysics)
I discuss the results from monitoring the variability of deeply embedded protostars for almost a decade at both the sub-millimetre (JCMT) and mid-IR (WISE) wavelengths, in the context of accretion disk evolution. I begin with an overview of the theoretical context relating these brightness variations with episodic accretion onto the protostar. I then present ensemble results that both reveal accretion variability as common during the deeply embedded phase and provide unique constraints on the physical processes responsible for driving accretion within the disk and onto the protostar. I conclude with two case studies where sub-mm variability has been monitored with both single-dish and interferometry, probing the inner infalling envelope and the disk.
[ If accepted, I will coordinate this presentation with the invited talk by Jeong-Eun Lee to provide maximum impact for the conference participants as to our understanding of episodic accretion onto protostars. ]
asiaa.sinica.edu.tw