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Full-Text Articles in Physical Sciences and Mathematics
Hr Aurigae: An Active Binary ?, Charles G. Loomis, Edward G. Schmidt
Hr Aurigae: An Active Binary ?, Charles G. Loomis, Edward G. Schmidt
Edward Schmidt Publications
Photometric and spectral observations of the variable star HR Aurigae are presented. Based on these data we conclude that this star, previously regarded as a type II Cepheid, is, in fact, an active binary.
The Period-Decline-Rate Relation For Pulsating Stars, Edward G. Schmidt, Kathryn H. Wiese
The Period-Decline-Rate Relation For Pulsating Stars, Edward G. Schmidt, Kathryn H. Wiese
Edward Schmidt Publications
The relationships between the periods and the rate of decline in V and R for pulsating stars are investigated. It is shown that these relationships are useful for making preliminary estimates of periods for stars with little data. These estimates can then be used to optimize times of further observations.
The Chromosphere Of Beta Cassiopeiae, Terry J. Teays, Edward G. Schmidt, Massimo Fracassini, Laura E. Pasinetti Fracassini
The Chromosphere Of Beta Cassiopeiae, Terry J. Teays, Edward G. Schmidt, Massimo Fracassini, Laura E. Pasinetti Fracassini
Edward Schmidt Publications
We have carried out high-resolution, long-wavelength IUE observations and ground-based photometry of the δ Scuti star β Cas. The ground-based observations were used together with previous results of Antonello et al. to ensure that the IUE observations were correctly phased relative to the photometric variation. Fluxes for the emission core of the Mg II k λ2796 line were obtained from the ultraviolet spectra over several cycles in 1986 and 1987. We found that there is an increase in the emission during part of the cycle but it occurs near minimum light in contrast to another δ Scuti star, ρ Pup, …