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Pulsation versus metallicism in Am stars as revealed by LAMOST and WASP
B. Smalley, V. Antoci, D. L. Holdsworth +13
We present the results of a study of a large sample of A and Am stars with spectral types from LAMOST and light curves from WASP. We find that, unlike normal A stars, Sct pulsa…
The Next Generation Transit Survey - Prototyping Phase
James McCormac, Don Pollacco, Peter Wheatley +16
We present the prototype telescope for the Next Generation Transit Survey, which was built in the UK in 2008/09 and tested on La Palma in the Canary Islands in 2010. The goals for…
Rayleigh scattering in the transmission spectrum of HAT-P-18b
J. Kirk, P. J. Wheatley, T. Louden +5
We have performed ground-based transmission spectroscopy of the hot Jupiter HAT-P-18b using the ACAM instrument on the William Herschel Telescope (WHT). Differential spectroscopy o…
No hydrogen exosphere detected around the super-Earth HD97658 b
Vincent Bourrier, David Ehrenreich, George King +5
The exoplanet HD97658b provides a rare opportunity to probe the atmospheric composition and evolution of moderately irradiated super-Earths. It transits a bright K star at a modera…
Transmission spectroscopy of the inflated exoplanet WASP-52b, and evidence for a bright region on the stellar surface
J. Kirk, P. J. Wheatley, T. Louden +5
We have measured the transmission spectrum of the extremely inflated hot Jupiter WASP-52b using simultaneous photometric observations in SDSS u', g' and a filter centred on the sod…
WASP-86b and WASP-102b: super-dense versus bloated planets
F. Faedi, Y. Gómez Maqueo Chew, D. Pollacco +38
We report the discovery of two transiting planetary systems: a super dense, sub-Jupiter mass planet WASP-86b (\mpl\ = 0.82 0.06 \mj, \rpl\ = 0.63 0.01 \rj), and a bloat…