7 papers
The first planet detected in the WTS: an inflated hot-Jupiter in a 3.35 day orbit around a late F-star [ERRATUM]
M. Cappetta, R. P. Saglia, J. L. Birkby +35
We report the discovery of WTS-1b, the first extrasolar planet found by the WFCAM Transit Survey, which began observations at the 3.8-m United Kingdom Infrared Telescope (UKIRT) in…
WTS-2 b: a hot Jupiter orbiting near its tidal destruction radius around a K-dwarf
J. L. Birkby, M. Cappetta, P. Cruz +34
We report the discovery of WTS-2 b, an unusually close-in 1.02-day hot Jupiter (Mp=1.12MJ, Rp=1.363RJ) orbiting a K2V star, which has a possible gravitationally-bound M-dwarf compa…
Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups
M. C. Gálvez-Ortiz, M. Kuznetsov, J. R. A. Clarke +12
We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving gr…
A catalogue of bright (K < 9) M dwarfs
J. Frith, D. J. Pinfield, H. R. A. Jones +8
Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwa…
A spectroscopic and proper motion search of Sloan digital Sky Survey: red subdwarfs in binary systems
Z. H. Zhang, D. J. Pinfield, B. Burningham +13
Red subdwarfs in binary systems are crucial for both model calibration and spectral classification. We search for red subdwarfs in binary systems from a sample of high proper motio…
A spectral differential approach to characterizing low-mass companions to late-type stars
N. M. Kostogryz, M. Kuerster, T. M. Yakobchuk +2
In this paper, we develop a spectral differential technique with which the dynamical mass of low-mass companions can be found. This method aims at discovering close companions to l…