Analysis of High Time Resolution Optical Spectra of RX J0558.0+5353

Details Analysis of High Time Resolution Optical Spectra of RX J0558.0+5353 Analysis of High Time Resolution Optical Spectra of RX J0558.0+5353

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.7606w&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #76.06; Bulletin of the American Astronomical Society, Vol. 28, p.1371

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We analyze high time resolution optical spectra of the DQ Her type intermediate polar RX J0558.0+5353 obtained at the MMT in December 1995. The spectra cover nearly a complete orbit and reveal a pulse in the mean flux of the continua and in the fluxes of the Hβ , Hγ and He II 4686 lines. This pulse, with a fundamental frequency of approximately 165c/d and a first harmonic at 316c/d confirms the spin period reported by Skillman (1995). Measurements of radial velocities in the line wings suggest that the HeII emission arises from an inner region of the accretion disk, closer to the white dwarf than the region where the Balmer lines are emitted. Doppler tomography of Hβ and HeII lines yields visual confirmation of this picture of accretion and emissions in this intermediate polar system.

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