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RX J1039.7-0507: A New Intermediate Polar and Probable Recent Nova, possessing a large Reflection Effect | | Patrick A. Woudt
; Brian Warner
; | | Date: |
25 Oct 2002 | | Journal: | Mon.Not.Roy.Astron.Soc. 339 (2003) 731 | | Subject: | astro-ph | | Affiliation: | Univ. of Cape Town) and Brian Warner (Univ. of Cape Town | | Abstract: | The ROSAT source RX J1039.7-0507, known from its optical spectrum to be a Cataclysmic Variable star, is shown from high speed photometry to have an orbital period of 1.574 h. The system has a nearly sinusoidal photometric modulation with a range of 1.1 mag which we interpret as the reflection effect caused by a very hot white dwarf primary. This suggests that a nova explosion occured on the primary in the relatively recent past. In addition, RX J1039.7-0507 has periodic signals at 1932.5 s and 721.9 s which, with the aid of other periods present at low amplitude, we interpret as an orbital sideband and the first harmonic of the primary’s spin period. RX J1039.7-0507 is therefore an intermediate polar with a spin period of 1444 s (24.07 min). | | Source: | arXiv, astro-ph/0210565 | | Services: | Forum | Review | PDF | Favorites | |
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