YY ERI revisited

Details YY ERI revisited YY ERI revisited

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...159..142n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 159, no. 1-2, April 1986, p. 142-146. CNR-supported research.

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Computational Astrophysics, Eclipsing Binary Stars, Mass Ratios, Radial Velocity, Stellar Spectra, Data Reduction, Roche Limit, Stellar Mass, Stellar Models, Stellar Spectrophotometry

Scientific paper

The RV Cass spectrograph at ESO has been used to observe the W UMa star YY Eri, in order to obtain the spectroscopic mass ratio of its components. A new technique has been successfully applied for the measure of radial velocities from intermediate dispersion spectra. The fit of the radial velocities has been done using a Roche lobe model of stellar surfaces which takes into account the distortion of the radial velocity curves due to tidal effects. As a by-product of the procedure a new photometric solution of YY Eri has been obtained through a simultaneous treatment of B and V bands data.

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