Browsing by Author "Zhang, Z. H."

Now showing items 1-3 of 3

    • Discovery of a T dwarf plus white dwarf binary system 
      Day-Jones, A. C.; Pinfield, D. J.; Ruiz González, María Teresa; Beaumont, H.; Burningham, B.; Gallardo, J.; Gianninas, A.; Bergeron, P.; Napiwotzki, R.; Jenkins, James Stewart; Zhang, Z. H.; Murray, D. N.; Catalán, S.; Gomes, J. (WILEY-BLACKWELL, 2011-01)
      We present the discovery of the first T dwarf + white dwarf binary system LSPM 1459+0857 AB, confirmed through common proper motion and spectroscopy. The white dwarf is a high proper motion object from the LSPM catalogue ...
    • The sub-stellar birth rate from UKIDSS 
      Day Jones, A. C.; Marocco, F.; Pinfield, D. J.; Zhang, Z. H.; Burningham, B.; Deacon, N.; Ruiz González, María Teresa; Gallardo, J.; Jones, H. R. A.; Lucas, P. W.; Jenkins, James Stewart; Gomes, J.; Folkes, S. L.; Clarke, J. R. A. (Oxford University Press on behalf of the Royal Astronomical Society, 2013)
      We present a new sample of mid-L to mid-T dwarfs with effective temperatures of 1100– 1700 K selected from the UKIDSS Large Area Survey (LAS) and confirmed with infrared spectra from X-shooter/Very Large Telescope . This ...
    • Two new ultracool benchmark systems from WISE+2MASS 
      Gomes, J. I.; Pinfield, D. J.; Marocco, F.; Day Jones, A. C.; Burningham, B.; Zhang, Z. H.; Jones, H. R. A.; Spaandonk, L. van; Weights, D. (Oxford University Press, 2013)
      We have used the Two-Micron All-Sky Survey and the Wide-field Infrared Survey Explorer to look for ultracool dwarfs that are part of multiple systems containing main-sequence stars.We cross-matched L dwarf candidates ...