Accretion disk eruptions in the FU Orionis variable stars

Kenyon, Scott J.
June 2000
AIP Conference Proceedings;2000, Vol. 522 Issue 1, p411
Academic Journal
The pre-main sequence FU Orionis variables undergo 3–6 mag outbursts lasting from decades to centuries. The outbursts occur in a large, self-luminous accretion disk surrounding a young star with an age of 1–10×10[sup 5] yr. Models of thermally unstable disks generally account for the scale and duration of the outburst. The accretion rate through the disk is large enough to add ∼1% of a solar mass to the central star in each outburst. Repetitive eruptions could add >=20% of a solar mass to each pre-main sequence star in the solar neighborhood. © 2000 American Institute of Physics.


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