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17 papers · 2 filters
Detection limits for close eclipsing and transiting sub-stellar and planetary companions to white dwarfs in the WASP survey
F. Faedi, R. G. West, M. R. Burleigh +2
We used photometric data from the WASP (Wide-Angle Search for Planets) survey to explore the possibility of detecting eclipses and transit signals of brown dwarfs, gas giants and t…
High C/O Ratio and Weak Thermal Inversion in the Very Hot Atmosphere of Exoplanet WASP-12b
Nikku Madhusudhan, Joseph Harrington, Kevin B. Stevenson +16
The carbon-to-oxygen ratio (C/O) in a planet provides critical information about its primordial origins and subsequent evolution. A primordial C/O greater than 0.8 causes a carbide…
The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-McLaughlin observations
E. K. Simpson, D. Pollacco, A. Collier Cameron +18
We present observations of the Rossiter-McLaughlin effect for the transiting exoplanet systems WASP-1, WASP-24, WASP-38 and HAT-P-8, and deduce the orientations of the planetary or…
MARVELS-1b: A Short-Period, Brown Dwarf Desert Candidate from the SDSS-III MARVELS Planet Search
Brian L. Lee, Jian Ge, Scott W. Fleming +59
We present a new short-period brown dwarf candidate around the star TYC 1240-00945-1. This candidate was discovered in the first year of the Multi-object APO Radial Velocity Exopla…
WASP-37b: a 1.8 MJ exoplanet transiting a metal-poor star
E. K. Simpson, F. Faedi, S. C. C. Barros +39
We report on the discovery of WASP-37b, a transiting hot Jupiter orbiting a mv = 12.7 G2-type dwarf, with a period of 3.577471 \pm 0.00001 d, transit epoch T0 = 2455338.6188 \pm 0.…
WASP-25b: a 0.6 M_J planet in the Southern hemisphere
B. Enoch, A. Collier Cameron, D. R. Anderson +18
We report the detection of a 0.6 M_J extrasolar planet by WASP-South, WASP-25b, transiting its solar-type host star every 3.76 days. A simultaneous analysis of the WASP, FTS and Eu…
Independent discovery and refined parameters of the transiting exoplanet HAT-P-14b
E. K. Simpson, S. C. C. Barros, D. J. A. Brown +30
We present SuperWASP observations of HAT-P-14b, a hot Jupiter discovered by Torres et al. The planet was found independently by the SuperWASP team and named WASP-27b after follow-u…
Spin-orbit angle measurements for six southern transiting planets; New insights into the dynamical origins of hot Jupiters
Amaury H. M. J. Triaud, Andrew Collier Cameron, Didier Queloz +14
For transiting planets, the Rossiter-McLaughlin effect allows the measurement of the sky-projected angle beta between the stellar rotation axis and a planet's orbital axis. Using t…
Detection limits for close eclipsing and transiting sub-stellar and planetary companions to white dwarfs in the WASP survey
F. Faedi, R. G. West, M. R. Burleigh +2
We have performed extensive simulations to explore the possibility of detecting eclipses and transits of close, sub-stellar and planetary companions to white dwarfs in WASP light-c…
WASP-21b: a hot-Saturn exoplanet transiting a thick disc star
F. Bouchy, L. Hebb, I. Skillen +25
We report the discovery of WASP-21b, a new transiting exoplanet discovered by the Wide Angle Search for Planets (WASP) Consortium and established and characterized with the FIES, S…
Spitzer Secondary Eclipses of WASP-18b
Sarah Nymeyer, Joseph Harrington, Ryan A. Hardy +16
The transiting exoplanet WASP-18b was discovered in 2008 by the Wide Angle Search for Planets (WASP) project. The Spitzer Exoplanet Target of Opportunity Program observed secondary…
Line-profile tomography of exoplanet transits -- II. A gas-giant planet transiting a rapidly-rotating A5 star
A. Collier Cameron, E. Guenther, B. Smalley +16
Most of our knowledge of extrasolar planets rests on precise radial-velocity measurements, either for direct detection or for confirmation of the planetary origin of photometric tr…
An Improved Method for Estimating the Masses of Stars with Transiting Planets
B. Enoch, A. Collier Cameron, N. R. Parley +1
To determine the physical parameters of a transiting planet and its host star from photometric and spectroscopic analysis, it is essential to independently measure the stellar mass…
The thermal emission of the exoplanets WASP-1b and WASP-2b
Peter J. Wheatley, Andrew Collier Cameron, Joseph Harrington +24
We present a comparative study of the thermal emission of the transiting exoplanets WASP-1b and WASP-2b using the Spitzer Space Telescope. The two planets have very similar masses…
WASP-22 b: A transiting "hot Jupiter" planet in a hierarchical triple system
P. F. L. Maxted, D. R. Anderson, M. Gillon +21
We report the discovery of a transiting planet orbiting the star TYC 6446-326-1. The star, WASP-22, is a moderately bright (V=12.0) solar-type star (Teff = 6000 +/- 100 K, [Fe/H] =…
Ground-based detection of thermal emission from the exoplanet WASP-19b
N. P. Gibson, S. Aigrain, D. L. Pollacco +6
We present an occultation of the newly discovered hot Jupiter system WASP-19, observed with the HAWK-I instrument on the VLT, in order to measure thermal emission from the planet's…
On the Orbit of Exoplanet WASP-12b
Christopher J. Campo, Joseph Harrington, Ryan A. Hardy +17
We observed two secondary eclipses of the exoplanet WASP-12b using the Infrared Array Camera on the Spitzer Space Telescope. The close proximity of WASP-12b to its G-type star resu…