EPoS Contribution
EPoS Contribution
Line-Driven Ablation of Massive Star Forming Accretion Disks

Nathaniel-Dylan Kee
U Tübingen, Tübingen, DE
While it is well established that there is an upper mass limit for stars, its origin is not well understood. This work examines the role of UV-line scattering, known to drive strong stellar mass loss in the main sequence phase, in removing material from protostellar accretion disks. By using a 3D line-transport prescription embedded in hydrodynamic simulations, we demonstrate the strong impact such ablative mass loss has on accretion. Particular emphasis is placed on the potential role that the resulting disk disruption may have on terminating accretion onto the massive protostar, and thus helping to explain the paucity of stars more massive than ~150 Msol.
Caption: Mass loss rate driven by UV-line scattering from a disk being constantly replenished at the midplane, measured in solar masses per year. Over plotted are contours of log(density) in g cm-3.
R. Kuiper, U Tübingen, DE
D. Meyer, U Tübingen, DE
A. Kölligan, U Tübingen, DE
S. Owocki, U Delaware, US
J. Sundqvist, INTA, ES
A. ud-Doula, Penn State, US
Key publication

Suggested Session: Massive Star Formation