New CCD measurements on the two high-amplitude δ Sct stars V798 Cyg and V831 Tau were carried out. The double-mode pulsation of V798 Cyg is demonstrated beyond any doubt. The f 1 /f 2 ratio of 0.800 is confirmed to be related to the unusual shape of the f 1 light curve. The properties of the Fourier parameters were revisited also by considering the new light curve of V831 Tau.In particular, the classical double-mode pulsators cannot fill the gap in the R 21 distribution. Two new variable stars were discovered in the field of V798 Cyg.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.