Testing Theories of Wind/jet Production in YSOs

Details Testing Theories of Wind/jet Production in YSOs Testing Theories of Wind/jet Production in YSOs

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8627c&link_type=abstract

HST Proposal ID #8627

Physics

Hst Proposal Id #8627 Star Formation

Scientific paper

We propose to use STIS ultraviolet spectroscopy to test theories of jet/wind production from the accretion disks of low-mass young stellar objects, providing new insight into disk physics, accretion energy balance, and jet collimation. STIS observations of the Fe II ultraviolet lines in absorption will probe lower-density and lower-temperature material than optical forbidden and permitted emission lines, and thus provide unique information on jet/wind launching and acceleration. Velocity-resolved spectra will distinguish between X-wind models, in which all the mass ejection occurs from the inner disk edge, and disk wind models, where the flow originates from a much larger area of the disk. Our results will provide important new constraints on the best-studied, best-understood astrophysical jet systems.

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