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

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

Authors

C. Dougados (Author) Other; S. Cabrit (Author) Other; J. Ferreira (Author) Other; N. Pesenti (Author) Other; Paulo J. V. Garcia (Author) FEUP; D. O'Brien (Author) Other

Journal

Title: Astrophysics and Space Science

Vol. 292 No. 1-4

Pages: 643-650

ISSN: 0004-640X

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-00F-J1B

DOI: 10.1023/b:astr.0000045070.22924.8b

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 magneto-centrifugal disk wind ejection models. However dynamically cold disk wind solutions predict too large terminal velocities and too low jet densities and ionisation fractions, suggesting that thermal gradients ( originating in an accretion heated disk corona for example) may play an important role in accelerating the flow.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8