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Browsing University of Hertfordshire by Author "Clarke, James"
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Discovery of the benchmark metal poor T8 dwarf BD+01 2920B
Pinfield, D.J.; Burningham, B.; Lodieu, N.; Leggett, S.; Tinney, C.G.; van Spaandonk, L.; Marocco, F.; Smart, R.; Gomes, J.; Smith, Leigh; Lucas, P.W.; Day-jones, A.; Murray, D.; Katsiyannis, A. C.; Catalan, S.; Cardoso, C.; Clarke, James; Folkes, S.; Galvez-Ortiz, M.; Homeier, D.; Jenkins, J.; Jones, H.R.A.; Zhang, Z. (2012)We have searched the Wide-field Infrared Survey Explorer first data release for widely separated (<=10,000AU) late T dwarf companions to Hipparcos and Gliese stars. We have discovered a new binary system containing a K-band ... -
Measuring ultracool properties from the UKIDSS Large Area Survey
Day-Jones, Avril; Marocco, F.; Pinfield, D.J.; Zhang, Zenghua; Burningham, B.; Deacon, Niall; Ruiz, Maria-Teresa; Gallardo, Jose; Jones, H.R.A.; Lucas, P.W.; Jenkins, James; Gomes, Joana; Folkes, Stuart; Clarke, James (EDP Sciences, 2013)We discuss the properties and of ultracool and brown dwarfs that can be measured from current large area surveys and how fundamental parameters, such as the mass function and formation history can be measured, describing ...