Issue |
A&A
Volume 447, Number 2, February IV 2006
|
|
---|---|---|
Page(s) | L17 - L19 | |
Section | Letters | |
DOI | https://doi.org/10.1051/0004-6361:200500232 | |
Published online | 07 February 2006 |
Letter to the Editor
The periods of the intermediate polar RX J0153.3+7446
Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK e-mail: a.j.norton@open.ac.uk
Received:
6
December
2005
Accepted:
23
December
2005
We present the first optical photometry of the counterpart to the
candidate intermediate polar RX J0153.3+7446. This reveals an optical pulse period
of s. Reanalysis of the previously published ROSAT X-ray data
reveals that the true X-ray pulse period is probably
s, rather than
the 1414 s previously reported. Given that the previously noted orbital period
of the system is 3.94 h, we are able to
identify the X-ray pulse period with the white dwarf spin period and the optical
pulse period with the rotation period of the white dwarf in the binary reference
frame, as commonly seen in other intermediate polars. We thus confirm that
RX J0153.3+7446 is indeed a typical intermediate polar.
Key words: binaries: close / stars: white dwarfs / stars: individual: RX J0153.3+7446
© ESO, 2006
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