Abstract
We present a near-infrared photometric search for low mass stellar and substellar companions, and for debris disks around white dwarfs in the UKIDSS Large Area Survey DR5. A cross correlation of the SDSS DR4 and McCook and Sion catalogues of white dwarfs gave near-infrared photometry for 1,161 stars. Atmospheric models are fitted to the optical and near-infrared photometry of the matched stars to identify those with a photometric excess consistent with an unresolved companion or debris disk. In total 7 new potential white dwarf + brown dwarf binary candidates have been identified. We present follow-up spectroscopy of a previously identified candidate; PHL5038. We confirm that this system is a resolved white dwarf + L8 brown dwarf binary.
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Steele, P.R. et al. (2013). White Dwarfs in UKIDSS. In: Adamson, A., Davies, J., Robson, I. (eds) Thirty Years of Astronomical Discovery with UKIRT. Astrophysics and Space Science Proceedings, vol 37. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7432-2_16
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DOI: https://doi.org/10.1007/978-94-007-7432-2_16
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