Understanding sub-stellar populations using wide-field infrared surveys

D. J. Pinfield, A. C. Day-Jones, B. Burningham, S. K. Leggett, H. Beaumont, M. Tamura, C. G. Tinney, M. C. Liu, D. Homeier, N. Lodieu, N. R. Deacon, A. A. West, N. Huelamo, T. Dupuy, D. J. Mortlock, S. J. Warren, H. R A Jones, P. W. Lucas, M. Ishi, R. G. McMahonP. C. Hewett, M. R. Zapatero-Osorio, E. L. Martin, B. P. Venemans, D. Barrado, Z. Zhang, M. Morales-Calderon

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper discusses benchmark brown dwarfs in various environments, and focuses on those in wide binary systems. We present a summary of the recently discovered T dwarf population from the UKIDSS Large Area Survey, and describe the constraints that it places on our knowledge of the sub-stellar initial mass function. We also present some exciting results from our ongoing search for wide companions to this sample, that has so far revealed an M4-T8.5 binary system at ∼12 parsecs and also the first ever Tdwarf-white dwarf binary system. The T dwarfs in these binaries have their properties constrained by the primary object and are thus benchmark objects that are already testing the predictions of theoretical model atmospheres.

Original languageEnglish
Title of host publicationResearch, Science and Technology of Brown Dwarfs and Exoplanets: Proceedings of an International Conference Held in Shangai on Occasion of a Total Eclipse of the Sun
PublisherEDP Sciences
Editionarticle 06002
ISBN (Print)9782759806645
Publication statusPublished - 18 Jul 2011
EventInternational Conference Held in Shangai on Occasion of a Total Eclipse of the Sun - Shanghai, China
Duration: 20 Jul 200924 Jul 2009


ConferenceInternational Conference Held in Shangai on Occasion of a Total Eclipse of the Sun


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