Fine structure of the chromospheric activity in Solar-type stars – The Hα line

• Published in: Astronomy and astrophysics (Berlin) Vol. 431; no. 1; pp. 329 - 338
• Main Authors: Lyra, W., G. F. Porto de Mello
• Format: Journal Article
• Language: English
• Published: Les Ulis EDP Sciences 01.02.2005
• Subjects: Galaxy: solar neighbourhood; line: formation; stars: activity; stars: atmospheres; stars: chromospheres; techniques: spectroscopic; stars: atmospheres; H-alpha lines; Sun; Subgiant star; Fine structure; Solar activity; stars: chromospheres; line: formation; Metallicity; techniques: spectroscopic; Kinematics; Solar neighborhood; Models; Dwarf stars; stars: activity; Age; Galaxy: solar neighbourhood; Solar type star

A calibration of Hα as both a chromospheric diagnostic and an age indicator is presented, complementing the works previously done on this subject ([CITE]; [CITE]). The chromospheric diagnostic was built with a statistically significant sample, covering nine years of observations, and including 175 s...