WASP-92b, WASP-93b and WASP-118b: Three new transiting close-in giant planets

Abstract

We present the discovery of three new transiting giant planets, first detected with the WASP telescopes, and establish their planetary nature with follow up spectroscopy and ground-based photometric lightcurves. WASP-92 is an F7 star, with a moderately inflated planet orbiting with a period of 2.17 days, which has $R_p=1.461\pm 0.077R_{\mathrm{J}}$ and $M_p=0.805\pm 0.068M_{\mathrm{J}}$. WASP-93b orbits its F4 host star every 2.73 days and has $R_p=1.597\pm 0.077R_{\mathrm{J}}$ and $M_p=1.47\pm 0.029M_{\mathrm{J}}$. WASP-118b also has a hot host star (F6) and is moderately inflated, where $R_p=1.440\pm 0.036R_{\mathrm{J}}$ and $M_p=0.513\pm 0.041M_{\mathrm{J}}$ and the planet has an orbital period of 4.05 days. They are bright targets (V = 13.18, 10.97 and 11.07 respectively) ideal for further characterisation work, particularly WASP-118b, which is being observed by K2 as part of campaign 8. WASP-93b is expected to be tidally migrating outwards, which is divergent from the tidal behaviour of the majority of hot Jupiters discovered.

arXiv comment14 pages, 10 figures; submitted to MNRAS

References in corpus (44)

• The chemical composition of the Sun
• Analytic Lightcurves for Planetary Transit Searches
• The K2 Mission: Characterization and Early results
• Accurate masses and radii of normal stars: modern results and applications
• Shrinking binary and planetary orbits by Kozai cycles with tidal friction
• The WASP Project and the SuperWASP Cameras
• Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
• A box-fitting algorithm in the search for periodic transits
• A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
• Ages for illustrative field stars using gyrochronology: viability, limitations and errors
• Hot Stars with Hot Jupiters Have High Obliquities
• Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments
• The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD108147 and HD168746
• Efficient identification of exoplanetary transit candidates from SuperWASP light curves
• The Frequency of Hot Jupiters Orbiting Nearby Solar-Type Stars
• The Rossiter-McLaughlin effect and analytic radial velocity curves for transiting extrasolar planetary systems
• Time scales of Li evolution: a homogeneous analysis of open clusters from ZAMS to late-MS
• WASP-47: A Hot Jupiter System with Two Additional Planets Discovered by K2
• Kepler constraints on planets near hot Jupiters
• Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler
• WASP-3b: a strongly-irradiated transiting gas-giant planet
• Tidal Evolution of Close-in Planets
• A fast hybrid algorithm for exoplanetary transit searches
• SOPHIE velocimetry of Kepler transit candidates VII. A false-positive rate of 35% for Kepler close-in giant exoplanet candidates
• Line-profile tomography of exoplanet transits I: The Doppler shadow of HD 189733b
• On the Relation Between Hot Jupiters & the Roche Limit
• Falling Transiting Extrasolar Giant Planets
• WASP-30b: a 61 Mjup brown dwarf transiting a V=12, F8 star
• WASP-41b: A transiting hot Jupiter planet orbiting a magnetically-active G8V star
• WASP-42 b and WASP-49 b: two new transiting sub-Jupiters
• An Improved Method for Estimating the Masses of Stars with Transiting Planets
• The destruction of inner planetary systems during high-eccentricity migration of gas giants
• On the Occurrence Rate of Hot Jupiters in Different Stellar Environments
• Correcting the spectroscopic surface gravity using transits and asteroseismology. No significant effect on temperatures or metallicities with ARES+MOOG in LTE
• Accurate spectroscopic parameters of WASP planet host stars
• A paucity of proto-hot Jupiters on super-eccentric orbits
• Are falling planets spinning up their host stars?
• Tidal Evolution of Close-in Extrasolar Planets: High Stellar Q from New Theoretical Models
• Hot Jupiters with relatives: discovery of additional planets in orbit around WASP-41 and WASP-47
• Updated parameters for the transiting exoplanet WASP-3b using RISE, a new fast camera for the Liverpool Telescope
• Bayesian mass and age estimates for transiting exoplanet host stars
• A Search for Photometric Variability Towards M71 with the Near-Infrared Transiting ExoplanetS Telescope
• RISE: a fast-readout imager for exoplanet transit timing
• PIRATE: A Remotely-Operable Telescope Facility for Research and Education

Cited by in corpus (18)

• A library of ATMO forward model transmission spectra for hot Jupiter exoplanets
• TESS Transit Timing of Hundreds of Hot Jupiters
• ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
• Visible-light Phase Curves from the Second Year of the TESS Primary Mission
• ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides
• WASP-167b/KELT-13b: Joint discovery of a hot Jupiter transiting a rapidly-rotating F1V star
• Starspots on WASP-107 and pulsations of WASP-118
• A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE
• ExoClock Project: An open platform for monitoring the ephemerides of Ariel targets with contributions from the public
• Discovery and characterization of the exoplanets WASP-148b and c. A transiting system with two interacting giant planets
• NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf
• Dispersed Matter Planet Project Discoveries of Ablating Planets Orbiting Nearby Bright Stars
• Stellar obliquities and magnetic activities of Planet-Hosting Stars and Eclipsing Binaries based on Transit Chord Correlation
• Spinning up a Daze: TESS Uncovers a Hot Jupiter orbiting the Rapid-Rotator TOI-778
• Looking For Timing Variations in the Transits of 16 Exoplanets
• WASP-92, WASP-93 and WASP-118: Transit timing variations and long-term stability of the systems
• An asynchronous object-oriented approach to the automation of the 0.8-meter George Mason University campus telescope in Python
• On the parameter refinement of inflated exoplanets with large radius uncertainty based on TESS observations