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The chromospheric rotation activity relation in late type close binary systems (1982)

Laurent, R. ; Basri, G. S. ; Walter, F. M.

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Publication Date: 2011-08-18

Description: The IUE data on 36 late type close binary stars are presented. It is shown that the chromospheric and TR line fluxes increase with decreasing stellar rotation period, though not as rapidly as does the X-ray flux. There is an increasing dependence upon rotation with increasing line temperature. The data are consistent with the hypothesis that there exists a critical rotation rate, which depends on temperature, below which the emission flux is independent of rotation and above which it increases linearly with increasing angular velocity omega.

Keywords: ASTRONOMY

Type: NASA. Goddard Space Flight Center Advan. in Ultraviolet Astron.; p 566-569

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