An eclipse in FO Aquarii

Details An eclipse in FO Aquarii An eclipse in FO Aquarii

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237p..39h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 1, 1989, p. 39P-44P. Research supported by t

Astronomy and Astrophysics

Astronomy

22

Accretion Disks, Astronomical Photometry, Eclipsing Binary Stars, Spectroscopic Analysis, White Dwarf Stars, Emission Spectra, Light Curve, Line Shape, Line Spectra, X Ray Sources

Scientific paper

Spectroscopic data on the intermediate polar FO Aqr show a 'rotational disturbance' of the emission line profiles at orbital minimum, indicating an eclipse of an accretion disk. Some evidence for the eclipse is seen photometrically, but not in the X-ray band. It is suggested that the eclipse is only of the near side of the disk, with the primary remaining uneclipsed. This indicates an inclination in the range 65-75 deg, much greater than previously believed. The implications of the findings for the system geometry and component masses are discussed.

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