We present an investigation of rotation-activity correlation using IUE SWP measurements of CIV emission line at 1550\AA for 72 active binary systems. We use a standard stellar evolution code to derive non-empirical Rossby numbers, R_{o}, for each star in our sample and compare the resulting CIV rotation-activity correlation to that found for empirically derived values of Rossby number and that based on rotation alone. ...

... SPARCompiler(TM) Fortran 90 1.0 . FORTRAN 77 3.0.1 . ... important of these. -ansi: Report non-ANSI extensions. -c: Suppress linking, produce .o files -e: Recognize extended (132 character) source lines -fast: Specify common set of performance options - fixed : Interpret all Fortran source files according to fixed form rules -flags: Print summary of compiler options -fnonstd: Non-standard initialization of floating-point hardware -fnonstop: Execute without trapping on invalid, overflow ...