EDP Sciences
Free access
Volume 433, Number 2, April II 2005
Page(s) 635 - 639
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20042314

A&A 433, 635-639 (2005)
DOI: 10.1051/0004-6361:20042314

A serendipitous XMM-Newton observation of the intermediate polar WX Pyx

E. M. Schlegel

High Energy Astrophysics Division, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, USA
    e-mail: eschlegel@cfa.harvard.edu

(Received 4 November 2004 / Accepted 8 December 2004)

We briefly describe a serendipitous observation of the little-studied intermediate polar WX Pyx using XMM-Newton. The X-ray spin period is 1557.3 s, confirming the optical period published in 1996. An orbital period of ~5.54 h is inferred from the separation of the spin-orbit sidelobe components. The soft and hard band spin-folded light curves are roughly sinusoidal in shape. The best-fit spectrum is consistent with a bremsstrahlung temperature of ~18 keV. An upper limit of ~300 eV is assigned to the presence of Fe line emission. WX Pyx lies near TX and TV Col in the $P_{\rm spin}-P_{\rm orb}$ plane.

Key words: X-rays: individuals: WX Pyx -- X-rays: binaries -- stars: novae, cataclysmic variables

SIMBAD Objects

© ESO 2005