The origin of jets from young stars: Steady state disk wind models confronted to observations

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Catherine Dougados (Author) Other; Sylvie Cabrit (Author) Other; Jonathan Ferreira (Author) Other; Nicholas Pesenti (Author) Other; Paulo Garcia (Author) FEUP; Darren O'Brien (Author) Other

Journal

Title: Astrophysics and Space Science

Vol. 293 No. 1-2

Pages: 45-52

ISSN: 0004-640X

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 11 Citations

ISI Web of Science

Scopus - 11 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-CAT

DOI: 10.1023/b:astr.0000044651.96542.23

Abstract (EN): We discuss in this contribution constraints on the origin of mass-loss from young stars brought by recent observations at high angular resolution (0.1"=14 AU) of the inner regions of winds from T Tauri stars. Jet widths and collimation scales, the large extent of the velocity profile as well as the detection of rotation signatures agree with predictions from extended (R(e)greater than or equal to1 AU) magneto-centrifugal disk wind ejection models. Detected poloidal and toroidal velocities imply large ejection efficiencies (xisimilar or equal to0.05, lambdasimilar or equal to10), suggesting that thermal gradients (originating in an accretion heated disk corona for example) play an important role in accelerating the flow.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8