Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.4912j&link_type=abstract
American Astronomical Society, 189th AAS Meeting, #49.12; Bulletin of the American Astronomical Society, Vol. 28, p.1339
Astronomy and Astrophysics
Astronomy
9
Scientific paper
The Trapezium region in Orion is composed of a few high-mass stars, responsible for the ionization of the surrounding gas, and a plethora of low-mass stars with disks. Observations at infrared, optical, and radio wavelengths have led to the discovery of extended ionized envelopes around many of the young low-mass stars requiring evaporation rates dot M ~ 10(-7) Modot/yr. In this poster we explain these observations through a model for the evaporation of disks around young low-mass stars by an external source of high energy photons. In particular, the externally produced ultraviolet continuum longward of the Lyman limit is used to heat the disk surface and produce a warm neutral flow. The model results in an offset ionization front, where the neutral flow encounters Lyman continuum radiation, and a mass-loss rate which is fixed due to the self-regulating nature of FUV heating. Applying this model to the Trapezium region evaporating objects, particularly HST 10, produces a satisfactory solution to both the mass-loss rate and the size of the ionized envelopes. The resulting short destruction times for these disks constrain the gestation period for planet embryos around stars in dense clusters.
Bally John
Hollenbach David
Johnstone Dorothy
Störzer H.
Sutherland Ralph
No associations
LandOfFree
Externally Induced Evaporation of Young Stellar Disks: The Case for HST 10 in Orion's Trapezium. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Externally Induced Evaporation of Young Stellar Disks: The Case for HST 10 in Orion's Trapezium., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Externally Induced Evaporation of Young Stellar Disks: The Case for HST 10 in Orion's Trapezium. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-817173