# WASP-23b: a transiting hot Jupiter around a K dwarf and its Rossiter-McLaughlin effect

@article{Triaud2011WASP23bAT,
title={WASP-23b: a transiting hot Jupiter around a K dwarf and its Rossiter-McLaughlin effect},
author={Amaury H. M. J. Triaud and Didier Queloz and Coel Hellier and Micha{\"e}l Gillon and Barry Smalley and Leslie Hebb and Andrew Collier Cameron and David R. Anderson and Isabelle Boisse and Guillaume H{\'e}brard and Emmanuel Jehin and Tim A. Lister and Christophe Lovis and Pierre F. L. Maxted and Francesco A. Pepe and Don Pollacco and Damien S{\'e}gransan and Elaine Simpson and St{\'e}phane Udry and Richard G. West},
journal={Astronomy and Astrophysics},
year={2011},
volume={531},
pages={6}
}
• Published 14 March 2011
• Physics, Geology
• Astronomy and Astrophysics
We report the discovery of a new transiting planet in the southern hemisphere. It was found by the WASP-south transit survey and confirmed photometrically and spectroscopically by the 1.2 m Swiss Euler telescope, LCOGT 2m Faulkes South Telescope, the 60 cm TRAPPIST telescope, and the ESO 3.6 m telescope. The orbital period of the planet is 2.94 days. We find that it is a gas giant with a mass of 0.88 ± 0.10 MJ and an estimated radius of 0.96 ± 0.05RJ. We obtained spectra during transit with the…

## Figures and Tables from this paper

WASP-80b: a gas giant transiting a cool dwarf
• Physics, Geology
• 2013
We report the discovery of a planet transiting the star WASP-80 (1SWASP J201240.26-020838.2; 2MASS J20124017-0208391; TYC 5165-481-1; BPM 80815; V = 11.9, K = 8.4). Our analysis shows this is a 0.55
The EBLM Project IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot-Jupiters
• Physics, Geology
• 2017
We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M-dwarf
WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars ,
• Physics, Geology
• 2015
We report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31 MJup ;1 .46RJup) in
Mass and period limits on the ringed companion transiting the young star J1407
• Physics, Geology
• 2015
The young (∼16 Myr) pre-main-sequence star in Sco–Cen 1SWASP J140747.93−394542.6, hereafter referred to as J1407, underwent a deep eclipse in 2007 April, bracketed by several shallower eclipses in
Prospects for detecting the Rossiter–McLaughlin effect of Earth-like planets: the test case of TRAPPIST-1b and c
• Physics, Geology
• 2016
The Rossiter-McLaughlin effect is the principal method of determining the sky-projected spin--orbit angle ($\beta$) of transiting planets. Taking the example of the recently discovered TRAPPIST-1
THE MASS OF KOI-94d AND A RELATION FOR PLANET RADIUS, MASS, AND INCIDENT FLUX
• Geology, Physics
• 2013
We measure the mass of a modestly irradiated giant planet, KOI-94d. We wish to determine whether this planet, which is in a 22 day orbit and receives 2700 times as much incident flux as Jupiter, is
Rossiter–McLaughlin effect measurements for WASP-16, WASP-25 and WASP-31★
• Physics, Geology
• 2012
We present new measurements of the Rossiter–McLaughlin (RM) effect for three Wide Angle Search for transiting Planets (WASP) planetary systems, WASP-16, WASP-25 and WASP-31, from a combined analysis
Transiting planets from WASP-South, Euler, and TRAPPIST - WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars
• Geology, Physics
• 2013
Using the WASP transit survey, we report the discovery of three new hot Jupiters, WASP-68 b, WASP-73 b and WASP-88 b. The planet WASP-68 b has a mass of 0.95 ± 0.03 MJup, a radius of 1.24 +0.10 −0.06
HAT-P-65b AND HAT-P-66b: TWO TRANSITING INFLATED HOT JUPITERS AND OBSERVATIONAL EVIDENCE FOR THE REINFLATION OF CLOSE-IN GIANT PLANETS
• Physics, Geology
• 2016
We present the discovery of the transiting exoplanets HAT-P-65b and HAT-P-66b, with orbital periods of and days, masses of and , and inflated radii of and , respectively. They orbit moderately bright
OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS
• Geology, Physics
• 2012
We provide evidence that the obliquities of stars with close-in giant planets were initially nearly random, and that the low obliquities that are often observed are a consequence of star–planet tidal

## References

SHOWING 1-10 OF 52 REFERENCES
WASP-12b: THE HOTTEST TRANSITING EXTRASOLAR PLANET YET DISCOVERED
• Physics, Geology
• 2008
The planet has an equilibrium temperature of T eq = 2516 K caused by its very short period orbit around the hot, twelfth magnitude host star and has the largest radius of any transiting planet yet detected.
WASP-17b: AN ULTRA-LOW DENSITY PLANET IN A PROBABLE RETROGRADE ORBIT
• Physics, Geology
• 2009
It will be important to determine more precisely the current orbital eccentricity by further high-precision radial velocity measurements or by timing the secondary eclipse, both to reduce the uncertainty on the planet's radius and to test tidal-heating models.
The Doppler shadow of WASP-3b A tomographic analysis of Rossiter-McLaughlin observations
• Physics, Geology
• 2010
Context. Hot-Jupiter planets must form at large separations from their host stars where the temperatures are cool enough for their cores to condense. They then migrate inwards to their current
A Possible Tilted Orbit of the Super-Neptune HAT-P-11b
• Physics, Geology
• 2011
We report the detection of the Rossiter-McLaughlin effect for the eccentric, super-Neptune exoplanet HAT-P-11b, based on radial velocity measurements taken with HDS mounted on the Subaru 8.2m
The oblique orbit of the super-Neptune HAT-P-11b
• Physics, Geology
• 2010
We find the orbit of the Neptune-sized exoplanet HAT-P-11b to be highly inclined relative to the equatorial plane of its host star. This conclusion is based on spectroscopic observations of two
The Rossiter-Mclaughlin effect and analytic radial velocity curves for transiting extrasolar planetary systems
• Physics, Geology
• 2005
A transiting extrasolar planet sequentially blocks off the light coming from the different parts of the disk of the host star in a time-dependent manner. Because of the spin of the star, this
Efficient identification of exoplanetary transit candidates from SuperWASP light curves
• Physics, Geology
• 2007
Transiting extrasolar planets constitute only a small fraction of the range of stellar systems found to display periodic, shallow dimmings in wide-field surveys employing small-aperture A camera
A search for transiting extrasolar planet candidates in the OGLE-II microlens database of the galactic plane
• Physics, Geology
• 2007
Context. In the late 1990s, the Optical Gravitational Lensing Experiment (OGLE) team conducted the second phase of their long-term monitoring programme, OGLE-II, which since has been superseded by
Detection of Planetary Transits Across a Sun-like Star.
• Physics, Geology
The Astrophysical journal
• 2000
High-precision, high-cadence photometric measurements of the star HD 209458 are reported, which is known from radial velocity measurements to have a planetary-mass companion in a close orbit and the detailed shape of the transit curve due to both the limb darkening of thestar and the finite size of the planet is clearly evident.
Improved parameters for the transiting planet HD 17156b: a high-density giant planet with a very eccentric orbit
• Geology, Physics
• 2008
We report high-precision transit photometry for the recently detected planet HD 17156b. Using these new data with previously published transit photometry and radial velocity measurements, we perform