Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734026j&link_type=abstract
American Astronomical Society, AAS Meeting #217, #340.26; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We have modeled protoplanetary disks with a range of initial properties to determine how each condition effects the general profile of an evolved disk, which is valuable for extracting physical quantities from observations. We varied the mass of the star amongst 0.5, 1.0, and 1.5 solar masses and the initial slope of the surface density between -1.0 and -1.5. Our model consists of 1D and 1+1D codes without the assumption of steady state. We find that the evolved disk's surface density profile does not depend on the initial profile, and is not a power law with a slope of -1.0 or -1.5 (which is usually assumed). Also, the general shape of the mass accretion rate as a function of radius does not depend on the initial masses. It is clearly not constant, and changes direction (inward to outward flow) around 5 AU to 10 AU, depending on the evolution time. Both of these findings, the surface density profile and mass accretion rates, are critical for future modeling and observations.
Dodson-Robinson Sarah
Jones Amy
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