EPoS
EPoS Contribution

Gas infall via accretion disk - late findings

Alberto Sanna
INAF, Cagliari, IT
In this seminar, I will present novel, high-angular resolution observations of one of the closest, massive, young-stellar-objects to the Sun. For the first time, these observations reveal the details of how fast circumstellar gas collapses and slowly spins to pile up near a young star at high rates of 10-3 Msun/yr, within disk radii of only 700au and less. I will discuss both state-of-the-art simulations and a toy model which reproduce our observations in detail, commenting on (1) how these new findings advance our knowledge of (proto-)stellar disks at large and (2) how they can drive future observations in the field.
Collaborators:
M. Beltran, INAF, IT
C. Brogan, NRAO, US
A. Caratti o Garatti, INAF, IT
C. Carrasco-Gonzalez, IRyA, MX
A. Giannetti, INAF, IT
T. Hunter, NRAO, US
R. Kuiper, U Duisburg-Essen, DE
L. Moscadelli, INAF, IT
A. Oliva, Université de Genève, CH
A. Rodriguez-Kmenetzky, CONICET - UNC, AR
G. Sabatini, INAF, IT
J.M. Torrelles, CSIC-IEEC, ES
Relevant topic(s):
Accretion
Disks
Relevant Big Question:
How does gas infall proceed through the accretion disk of a young massive star?