EPoS Contribution
EPoS Contribution
Disk formation and SLR transport in a realistic GMC environment

Aake Nordlund
STARPLAN, Copenhagen, DK
We have followed the formation of 11 individual disk with RAMSES AMR simulations covering a scale range from 40 pc to 2 AU. Disks were selected from the formation of 1-2 solar mass stars formed in a simulation with 126 AU resolution, covering several Myr of GMC evolution, with tracking of the production, transport, and incorporation in disks of the short lived radionuclides (SLRs) 26Al and 60Fe. In a few cases we have subsequently repeated shorter stretches of the runs with AMR resolutions of 0.015 AU, to study the disks in greater detail. We find that disks around stars that accrete to similar masses can have a wide distribution of properties (size, captured magnetic flux, disk mass evolution, etc.), while on the other hand the general formation sequences are qualitatively similar. In particular we find that, even though large SLR variations are present in the GMC model as a whole (cf. the Figure), the disks all have very nearly homogeneous distributions of the SLRs (albeit at different levels), reflecting thorough mixing and short transport times of SLRs in the disks.
Caption: Distribution of 26Al/27Al abundance inside the GMC. The colors in the left and mid panels represent the gas temperature from cold (purple) to warm (red). The right hand side panel is a visualization of the 26Al distribution in the GMC.
M. Küffmeier, STARPLAN, DK
T. Haugbølle, STARPLAN, DK
T. Mogensen, STARPLAN, DK
M. Bizzarro, STARPLAN, DK
A. Vasileiades, STARPLAN, DK
Key publication

Suggested Session: Disk Formation