Photometry of long-period Algol binaries. II - Anomalies in five-color photometric solutions of RS Cephei

Abstract

view Abstract Citations (8) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometry of long-period Algol binaries. II. Anomalies in five-color photometric solutions of RS Cephei. Olson, E. C. Abstract New photometric solutions, essentially consistent at five wavelengths, are derived for the long-period totally eclipsing binary RS Cephei. The relatively small perturbations to the continuum light from the accretion disk surrounding the hot gainer are isolated and discussed, and a disk temperature of roughly 6000 K is found. Light perturbations suggest that the disk is asymmetrical, with most of the matter above the trailing hemisphere of the gainer. Occasional brightenings of the system at all wavelengths are identified as accretion episodes, when matter from the disk strikes the photosphere of the gainer. Large color anomalies, variable from eclipse to eclipse, were detected across the disk of the gainer during partial phases of primary eclipse. These color variations, which are not explainable by any simple model, appear to be a new effect among eclipsing binaries. Publication: The Astronomical Journal Pub Date: June 1986 DOI: 10.1086/114120 Bibcode: 1986AJ.....91.1421O Keywords: Eclipsing Binary Stars; Stellar Color; Stellar Mass Accretion; Stellar Spectrophotometry; Ubv Spectra; A Stars; Accretion Disks; Anomalies; Cool Stars; Infrared Spectra; Light Curve; Spectral Energy Distribution; Astronomy full text sources ADS | data products SIMBAD (1) Related Materials (5) Part 1: 1986AJ.....91.1418O Part 3: 1987AJ.....94.1309O Part 4: 1988AJ.....96.1439O Part 5: 1989AJ.....97..505O Part 6: 1989AJ.....98.1002O