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Spin-Resolved Hα Spectroscopy and Photometry of the Intermediate Polar RXJ0558+5353

Published online by Cambridge University Press:  12 April 2016

S. R. Duck ,
M. D. Still ,
A. Allan ,
K. Horne  and
R. W. Hilditch
S. R. Duck
Affiliation:
Oxford University, Astrophysics, Keble Road, Oxford, UK
M. D. Still
Affiliation:
St. Andrews University, N. Haugh, St. Andrews, Fife, UK
A. Allan
Affiliation:
St. Andrews University, N. Haugh, St. Andrews, Fife, UK
K. Horne
Affiliation:
St. Andrews University, N. Haugh, St. Andrews, Fife, UK
R. W. Hilditch
Affiliation:
St. Andrews University, N. Haugh, St. Andrews, Fife, UK

Extract

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RXJ0558+5353 was discovered and classified as an intermediate polar during the ROSAT all-sky survey and subsequent optical follow up programme (Haberl et al. 1994). A further pointed ROSAT observation revealed a spin periodicity of 272.74 s and a soft X-ray component well represented by an absorbed 57 eV blackbody, the spin modulation being due principally to intensity variations of the component (rather than variable absorption). Optical spectroscopy showed the orbital period to be 4.15 h. In this paper we show the true spin period to be 545.4555(8) s (Allan, Horne & Hilditch 1995), twice the published X-ray period, and also discuss preliminary results of the first spin-resolved spectroscopy of RXJ0558+5353.

Type
Intermediate Polars
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 177 - 178
Copyright
Copyright © Kluwer 1996

References

Allan, A., Horne, K., Hilditch, R.W., 1995, IAUC 6154 Google Scholar
Haberl, F., Thorstensen, J.R., Schwarzenburg-Czerny, A. et al., 1994, A&A, 291, 171 Google Scholar