Photometry of the Magnetic White Dwarf SDSS 121209.31+013627.7

C. Koen; P. F. L. Maxted

doi:10.1111/j.1365-2966.2006.10790.x

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arXiv · astro-ph/0607299

Photometry of the Magnetic White Dwarf SDSS 121209.31+013627.7

C. Koen·P. F. L. Maxted

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Abstract

The results of 27 hours of time series photometry of SDSS 121209.31+013627.7 are presented. The binary period established from spectroscopy is confirmed and refined to 0.061412 d (88.43 minutes). The photometric variations are dominated by a brightening of about 16 mmag, lasting a little less than half a binary cycle. The amplitude is approximately the same in V, R and white light. A secondary small brightness increase during each cycle may also be present. We speculate that SDSS 121209.31+013627.7 may be a polar in a low state.

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C. Koen, P. F. L. Maxted. 2006-07-13. Photometry of the Magnetic White Dwarf SDSS 121209.31+013627.7. https://doi.org/10.1111/j.1365-2966.2006.10790.x

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