The origin of jets in young stars - MHD disk wind models confronted to observations

• Type: Article in International Conference Proceedings Book
• Date: 2003

Authors

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

Conference proceedings International

Title: OPEN ISSUES IN LOCAL STAR FORMATION

Pages: 213-222

Int Colloquium on Open Issues in Local Star Formation and Early Stellar Evolution

Ouro Preto, BRAZIL, APR 05-10, 2003

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-008-P7T

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: 10