An infall model for the T Tauri phenomenon.
Abstract
An infall model which produces P Cygni type II emission lines is presented. The blueshifted apparent absorption feature in these emission lines is interpreted in this model as the overlap region between a strong emission line centered near the rest velocity of the star and a weaker emission line at a velocity near -150 km/s. According to this model the energy source for the continuum and line-emission features observed in T Tauri stars is the kinetic energy of the infalling matter. A weak flux of soft X-rays is produced in the high-temperature postshock gas. These X-rays may be responsible for producing the nebulae observed near some T Tauri stars.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1976
- DOI:
- 10.1086/154840
- Bibcode:
- 1976ApJ...210..377U
- Keywords:
-
- Emission Spectra;
- Gravitational Collapse;
- Stellar Evolution;
- Stellar Spectra;
- T Tauri Stars;
- Variable Stars;
- H Alpha Line;
- H Beta Line;
- Kinetic Energy;
- Line Spectra;
- Radiative Transfer;
- Shock Layers;
- Stellar Models;
- Astrophysics