Understanding sub-stellar populations using wide-field infrared surveys
- Pinfield, D. J.
- Day-Jones, A. C.
- Burningham, B.
- Leggett, S. K.
- Beaumont, H.
- Tamura, M.
- Tinney, C. G.
- Liu, M. C.
- Homeier, Derek
- Lodieu, N.
- Deacon, N. R.
- West, A. A.
- Huelamo, N.
- Dupuy, Trent J.
- Mortlock, D. J.
- Warren, S. J.
- Jones, H. R. A.
- Lucas, P. W.
- Ishi, M.
- McMahon, R. G.
- Hewett, P.
- Zapatero-Osorio, M. R.
- Martin, E. L.
- Venemans, B. P.
- Barrado, D.
- Zhang, Z.
- Morales-Calderon, M.
- West, A. A.
Publication date
July 2011
DOI Publisher
EDP Sciences Journal
EPJ Web of ConferencesAbstract
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
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