On stellar accretion of matter through a disk and the ejection of bipolar flows

Details On stellar accretion of matter through a disk and the ejection of bipolar flows On stellar accretion of matter through a disk and the ejection of bipolar flows

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...256..686t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 256, no. 2, p. 686-688.

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7

Molecular Flow, Stellar Mass Accretion, Stellar Mass Ejection, Computational Astrophysics, Radiative Transfer, Stellar Evolution

Scientific paper

Numerical simulations in one dimension with radiative losses approximately taken into account were conducted to evaluate the effectiveness of a hydrodynamical mechanism proposed to account for the ejection of bipolar flows from systems undergoing disk accretion. When radiative cooling is taken into account, the mechanism fails to accelerate matter to escape velocity for reasonable values of protostellar disk densities. However, a significant fraction, about 0.01, of the accreted matter can be accelerated to velocities in excess of 0.25-0.5 of the orbital velocity.

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