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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

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

Revista

Título: Astrophysics and Space Science

Vol. 292 Nº 1-4

Páginas: 643-650

ISSN: 0004-640X

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 6 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8