Variation of stellar coronal activity with age

Kunte, P. K. ; Rao, A. R. ; Vahia, M. N. (1988) Variation of stellar coronal activity with age Astrophysics and Space Science, 143 (1). pp. 207-210. ISSN 0004-640X

Full text not available from this repository.

Official URL:

Related URL:


We investigate the variation in coronal activity of late-type stars with age. We determine the age of the star from the colour-colour diagram (U-B vsB-V). We show that the ratio of X-ray luminosity (L x) to bolometric luminosity (L bol) is well correlated with age over several orders of magnitude variations. We find thatLx/L bol) decreases with age with a power of -1.55. This is consistant with the expected results from the studies of the variation of the corona with chromosphere and the dependence of chromosophere on age.

Item Type:Article
Source:Copyright of this article belongs to Springer.
ID Code:85584
Deposited On:03 Mar 2012 14:44
Last Modified:03 Mar 2012 14:44

Repository Staff Only: item control page