Circumstellar disks and planetary formation

Details Circumstellar disks and planetary formation Circumstellar disks and planetary formation

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978m%26p....19..207t&link_type=abstract

(Conference on Protostars and Planets, Tucson, Ariz., Jan. 3-7, 1978.) Moon and the Planets, vol. 19, Oct. 1978, p. 207-210.

Physics

Planetary Evolution, Protostars, Stellar Envelopes, Stellar Evolution, Angular Velocity, Disks (Shapes), Mass Distribution, Planetary Mass, Stellar Mass Ejection

Scientific paper

The role of viscous forces in determining the evolution of a disk of gas around a pre-main-sequence star during the later stages of evolution is examined. A quasi-steady disklike distribution of opaque material is considered, and characteristic parameters are calculated for the observed disk around MWC 349. The results obtained indicate a central star mass of about 10 to 30 solar masses, a ZAMS spectral type of O6.5, a mass infall rate of approximately 1.5 thousandths of a solar mass per year, an exceedingly high density in the disk, conditions that should lead to the growth of condensed objects of large (at least planetesimal) size, and abundant material for planet formation

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