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Peculiarities and Variations in the Optical Spectrum of the RV Tauri-type Star R Sct
Kipper, Tõnu; Klochkova, Valentina G.
We analyzed some new high resolution optical spectra of the semiregular RV Tauri-type star R Sct. Fundamental parameters were found to be Teff=4500 K, log g=0.0 and ξt=4.0 km s-1. The results of chemical analysis show that R Sct is a metal-poor star with [Fe/H]≈-0.5. The carbon content with respect to iron is signi…
Pulsation of IU Per from the Ground-based and `Integral' Photometry
Gális, R.; Kundra, E.; Hric, L.
IU Per is an eclipsing semi-detached binary with a pulsating component. Using our own ground-based, as well as INTEGRAL satellite photometric observations in the B and V passbands, we derived geometrical and physical parameters of this system. We detected the short-term variations of IU Per in the residuals of brightness after the subtraction of s…