The new eclipsing magnetic binary system E 1114 + 182

Details The new eclipsing magnetic binary system E 1114 + 182 The new eclipsing magnetic binary system E 1114 + 182

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...293..303b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 293, June 1, 1985, p. 303-320. Sponsorship: Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

79

Cataclysmic Variables, Eclipsing Binary Stars, Magnetic Stars, Stellar Spectrophotometry, X Ray Binaries, Ephemerides, Light Curve, Linear Polarization, Magnetohydrodynamics, Stellar Orbits, White Dwarf Stars

Scientific paper

A comprehensive analysis of E 1114 + 182, the first eclipsing AM Herculis binary system and the shortest-period eclipsing cataclysmic variable known, is presented. The time-resolved X-ray observations which led to the system's recognition as an AM Her system with a roughly 90 minute orbital period are reported. The current optical photometric and polarimetric ephemeris and a description of the system's phase-modulated properties are given. The detailed photometric eclipse profile and the highly variable spectroscopic behavior are addressed. This information is used to determine systemic parameters and derive new information on the line emission regions. The data put severe constraints on current torque models for keeping the binary and white dwarf rotation in phase.

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