Oral Presentation
Obtaining a Sample of Protostellar Masses via Radiative Transfer Modeling.
Presenter: Blake Drechsler (University of Virginia)
Obtaining precise protostellar mass estimates is essential for understanding many aspects of protostellar evolution, especially characterizing the protostellar IMF and accretion. The stellar mass is also correlated to the protostellar disk mass and influences its gravitational stability. Here we present mass estimates for the sample of protostars observed by the eDisk ALMA large program. Rather than computing the masses through PV analysis, we instead perform full radiative transfer modeling. This is a more robust approach due to incorporating more self-consistent physics and considering all spatial information within the visbility data. Additionally, fitting via the visibilities enables a better understanding of uncertainties and can eliminate the ambiguity associated with deconvolution. After demonstrating the performance of our fitting for several models on a test source, L1527 IRS, we extended our methodology to the rest of the eDisk sources, obtaining the largest sample of precise protostellar masses to date measured with a consistent methodology.
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