Radial Velocity Estimation of EX Leo Using BF Algorithm

Details Radial Velocity Estimation of EX Leo Using BF Algorithm Radial Velocity Estimation of EX Leo Using BF Algorithm

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pkas...22...35k&link_type=abstract

Publication of the Korean Astronomical Society

Astronomy and Astrophysics

Astronomy

Boes, Eclipsing Binary, Radial Velocity, Spectroscopic Observation, Ex Leo

Scientific paper

We present the result of radial velocity observation of a W UMa type binary star EX Leo. We observed the star on February 16, 2003, using Long-Slit spectrograph of BOAO (Bohyunsan Optical Astronomical Observatory). Since the spectral lines are broad due to its fast rotation, it is difficult to distinguish two radial velocities from cross correlation function. Instead of cross correlation function, we used broadening function to develop our own code which estimate the radial velocity of the broadened line spectra. With our own code, radial velocities of primary and secondary stars are derived simultaneously. From the radial velocity curve fit, we obtained K1 = 50.24 ± 8.29 km/s and K2 = 254.05 ± 20.984 km/s respectively.

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