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On Mode Identification in delta Scuti

Cugier, H.; Monier, R.

UV light amplitudes and phase shifts obtained from the IUE observations are discussed for pulsating star delta Scuti. The published ground-based photometric and radial velocity data are also included in the analysis. The observations are compared with model calculations which take into account temperature and pressure changes during pulsation cycl…

An Evidence for Gaseous Envelope Surrounding the RS CVn System lambda And

Glebocki, R.; Sikorski, J.

MgII h and k profiles are analyzed in 62 high dispersion IUE spectra of a long-period RS CVn binary lambda And. We find strong evidence of the presence of circumstellar matter surrounding the binary system. Estimated lower mass limit of the envelope is 6.6 times 10^{-14} M_odot. We present evidence for the changes with time of the perias…