The discontinuous nature of chromospheric-activity evolution

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

G. Pace (Autor) FCUP

Revista

Título: Astrophysics and Space Science

Vol. 328 Nº 1-2

Páginas: 307-311

ISSN: 0004-640X

Editora: Springer Nature

Indexação

ISI Web of Science

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica