Multi-epoch time-resolved photometry of the eclipsing polar CSS081231:J071126+440405
arXiv:1501.05217 · doi:10.1002/asna.201412151
Abstract
The eclipsing polar CSS081231 turned bright (V_max ~ 14.5) in late 2008 and was subsequently observed intensively with small and medium-sized telescopes. A homogeneous analysis of this comprehensive dataset comprising 109 eclipse epochs is presented and a linear ephemeris covering the five years of observations, about 24000 orbital cycles, is derived. Formally this sets rather tight constraints on the mass of a hypothetical circumbinary planet, M_pl <= 2 M_Jup. This preliminary result needs consolidation by long-term monitoring of the source. The eclipse lasts 433.08 +- 0.65 s, and the orbital inclination is found to be i=79.3 - 83.7 degrees. The centre of the bright phase displays accretion-rate dependent azimuthal shifts. No accretion geometry is found that explains all observational constraints, suggesting a complex accretion geometry with possible pole switches and a likely non-dipolar field geometry.
arXiv comment11 pages, 11 figures, accepted for publication in AN
References in corpus (10)
- First Results from the Catalina Real-time Transient Survey
- Two planets orbiting the recently formed post-common envelope binary NN Serpentis
- Detection of a planetary system orbiting the eclipsing polar HU Aqr
- A dynamical analysis of the proposed HU Aquarii planetary system
- Revisiting the proposed planetary system orbiting the eclipsing polar HU Aquarii
- On the HU Aquarii planetary system hypothesis
- Hunting high and low: XMM monitoring of the eclipsing polar HU Aquarii
- Phase-resolved spectroscopy and photometry of the eclipsing polar EP Draconis (=H1907+690)
- Testing the planetary models of HU Aquarii
- Evidence for an oscillation of the magnetic axis of the white dwarf in the polar DP Leonis
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- Discovery, observations and modelling of a new eclipsing polar: MASTER OT J061451.70-272535.5
- Time-Variable Aluminum Absorption in the Polar AR Ursae Majoris, and an Updated Estimate for the Mass of the White Dwarf
- Discovery of the magnetic cataclysmic variable XMM J152737.4-205305.9 with a deep eclipse-like feature
- X-ray and Optical Analysis of the Prototype Polar AN UMa