Issue |
A&A
Volume 433, Number 2, April II 2005
|
|
---|---|---|
Page(s) | 635 - 639 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20042314 | |
Published online | 22 March 2005 |
A serendipitous XMM-Newton observation of the intermediate polar WX Pyx*
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 plane.
Key words: X-rays: individuals: WX Pyx / X-rays: binaries / stars: novae, cataclysmic variables
© ESO, 2005
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