The discontinuous nature of chromospheric-activity evolution

• Type: Article in International Scientific Journal
• Date: 2010

Authors

G. Pace (Author) FCUP

Journal

Title: Astrophysics and Space Science

Vol. 328 No. 1-2

Pages: 307-311

ISSN: 0004-640X

Publisher: Springer Nature

Indexing

ISI Web of Science

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Abstract (EN): Chromospheric activity has been thought to decay smoothly with time and, hence, to be a viable age indicator. Measurements in solar-type stars in open clusters seem to point to a different conclusion: chromospheric activity undergoes a fast transition from Hyades level to that of the Sun after about 1 Gyr of main-sequence lifetime and any decaying trend before or after this transition must be much less significant than the short-term variations.

Language: English

Type (Professor's evaluation): Scientific