EPoS Contribution
EPoS Contribution
Modeling the Disk-Envelope Boundary Around the Protostar L1527

Susan Terebey
CalStateLA, Los Angeles, US
ALMA probes continuum and spectral line emission from protostars that comes from both the envelope and circumstellar disk. For the protostar L1527 there is also spectral line emission that appears to trace the disk-envelope boundary. We present models of what ALMA should detect that incorporate a self-consistent collapse solution, radiative transfer, and time dependent chemical abundance calculations, a method that we name RadChemT. Results for the outer disk show that there can be significant differences from standard assumptions due to the effect of CO freeze out and non-Keplerian dynamics.
Caption: The predicted Position-Velocity diagram for C18O(2-1) shows a striking similarity between the model (left) and ALMA data (right). The method shows promise for tracing the dynamics and chemistry of the outer disk region.
Collaborators:
L. Flores, MPIA, DE
K. Willacy, JPL/Caltech, US
A. Isella, Rice U, US
N. Turner, JPL/Caltech, US
M. Flock, MPIA, DE
Suggested Session: Cores2Disks