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
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Official URL: http://www.springerlink.com/content/p77h0r8072n6jr...
Related URL: http://dx.doi.org/10.1007/BF00636769
Abstract
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 |
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