Soydugan, FarukSoydugan, EsinFrasca, A.2025-01-272025-01-272007978-1-583812-38-91050-3390https://hdl.handle.net/20.500.12428/21793Workshop on Solar and Stellar Physics through Eclipses -- MAR 27-29, 2006 -- Ankara Univ, ORSEM Campus, Side, Antalya, TURKEYThis study presents the results of the medium-resolution optical spectra of S Equ obtained with the echelle spectrograph of the Catania Astro-physical Observatory. In this work, new radial velocity curves for the components of the system with a precision better than in previous works are obtained using the cross-correlation technique. We have determined the absolute parameters of S Equ combining the orbit and light curve solutions. The preliminary results of the Ha line analysis indicate an extra emission and absorption as a likely result of a mass-transfer process and chromospheric activity of the cooler component.eninfo:eu-repo/semantics/closedAccessCircumstellar MaterialMass-TransferCassiopeiaeEquuleiStarsConference Object370201+N/AWOS:000246823600027