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Sodium Ionization in T-Tauri Stars

Published online by Cambridge University Press:  12 April 2016

A. Natta  and
C. Giovanardi
A. Natta
Affiliation:
Osservatorio Astrofisico di Arcetri, Italy
C. Giovanardi
Affiliation:
Centro per l’Astronomia Infrarossa, CNR, Italy

Extract

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We present the results of a study of the sodium ionization and excitation in the winds of low-luminosity, pre-main-sequence stars. Line profiles for the Nal doublet at 5990,5986 Åare discussed and compared with the observations for those T Tauri stars with P-Cygni profiles. We find that the observed shape of the lines put significative constraints on the rate of mass-loss (M ≥ 3 x 10-8M⊙/yr).

Type
III. Discs, Outflows, Jets and HH Objects
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 304
Copyright
Copyright © Springer-Verlag 1989