terminal age main sequence (TAMS)
rešte-ye farist bâ senn-e pâyâni
Fr.: séquence principale d'âge terminal
The locus of stars on the → Hertzsprung-Russell diagram that are at the point of exhausting hydrogen in their cores. TAMS forms the upper luminosity boundary of the → main sequence strip. See also → zero age main sequence (ZAMS).