weak-line T Tauri star
setâre-ye T-Gâv bâ xatthâ-ye nezâr
Fr.: étoile T Tauri à raies faibles
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong → stellar wind and → infrared excess. These objects are believed to be → pre-main sequence stars without obvious signs for disk → accretion. Weak-line T Tauri stars result from the evolution of → classical T Tauri stars.