NGTS-10b: The shortest period hot Jupiter yet discovered

Abstract

We report the discovery of a new ultra-short period transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of $2.162{}_{-0.107}^{+0.092}$ M${}_{\mathrm{J}}$ and $1.205{}_{-0.083}^{+0.117}$ R${}_{\mathrm{J}}$ and orbits its host star with a period of $0.7668944\pm 0.0000003$ days, making it the shortest period hot Jupiter yet discovered. The host is a $10.4\pm 2.5$ Gyr old K5V star ($T_{\mathrm{eff}}$=$4400\pm 100$\,K) of Solar metallicity ([Fe/H] = $-0.02\pm 0.12$\,dex) showing moderate signs of stellar activity. NGTS-10b joins a short list of ultra-short period Jupiters that are prime candidates for the study of star-planet tidal interactions. NGTS-10b orbits its host at just $1.46\pm 0.18$ Roche radii, and we calculate a median remaining inspiral time of $38$\,Myr and a potentially measurable transit time shift of $7$\,seconds over the coming decade, assuming a stellar tidal quality factor $Q_{\mathrm{s}}^{\prime }=2\times 10^7$.

arXiv comment16 pages, 19 figures and 5 tables. Submitted 27 Sept 2019. Accepted 10 Jan 2020. Published 20 Feb 2020

References in corpus (88)

• emcee: The MCMC Hammer
• Gaia Data Release 2. Summary of the contents and survey properties
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The Gaia mission
• Correcting for the Effects of Interstellar Extinction
• Analytic Lightcurves for Planetary Transit Searches
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• Astrophysics Source Code Library
• The WASP Project and the SuperWASP Cameras
• Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the Solar neighbourhood
• A box-fitting algorithm in the search for periodic transits
• A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
• The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 microns Using GLIMPSE Data
• astroquery: An Astronomical Web-Querying Package in Python
• No planet for HD 166435
• Rotation Periods of 34,030 Kepler Main-Sequence Stars: The Full Autocorrelation Sample
• Stellar Diameters and Temperatures II. Main Sequence K & M Stars
• Wide-field millimagnitude photometry with HAT: A Tool for Extra-solar Planet Detection
• Correcting systematic effects in a large set of photometric lightcurves
• Accurate, Empirical Radii and Masses of Planets and their Host Stars with Gaia Parallaxes
• The Kilodegree Extremely Little Telescope (KELT): A Small Robotic Telescope for Large-Area Synoptic Surveys
• WASP-12b: The hottest transiting planet yet discovered
• The Equilibrium-Tide Model for Tidal Friction
• Tidal dissipation in rotating solar-type stars
• H- Opacity and Water Dissociation in the Dayside Atmosphere of the Very Hot Gas Giant WASP-18 b
• The Next Generation Transit Survey (NGTS)
• Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler
• LDTk: Limb Darkening Toolkit
• HATSouth: a global network of fully automated identical wide-field telescopes
• H${}_2$O abundances and cloud properties in ten hot giant exoplanets
• WASP-19b: the shortest period transiting exoplanet yet discovered
• Spin-Orbit Evolution Of Short-Period Planets
• Atmospheric Circulation of Hot Jupiters: Dayside-Nightside Temperature Differences
• Detection of titanium oxide in the atmosphere of a hot Jupiter
• WASP-43b: The closest-orbiting hot Jupiter
• ACCESS: A featureless optical transmission spectrum for WASP-19b from Magellan/IMACS
• The KELT-South Telescope
• 3.6 and 4.5 $\mu$m $Spitzer$ Phase Curves of the Highly-Irradiated Hot Jupiters WASP-19b and HAT-P-7b
• Bayesian analysis of ages, masses, and distances to cool stars with non-LTE spectroscopic parameters
• WASP-42 b and WASP-49 b: two new transiting sub-Jupiters
• Spitzer observations of the thermal emission from WASP-43b
• Climate of an Ultra hot Jupiter: Spectroscopic phase curve of WASP-18b with HST/WFC3
• Retrieval of Exoplanet Emission Spectra with HyDRA
• Empirical Tidal Dissipation in Exoplanet Hosts From Tidal Spin-Up
• WASP-103b: a new planet at the edge of tidal disruption
• Accurate spectroscopic parameters of WASP planet host stars
• NGTS-1b: A hot Jupiter transiting an M-dwarf
• New low-mass eclipsing binary systems in Praesepe discovered by K2
• TESS full orbital phase curve of the WASP-18b system
• Effect of the rotation and tidal dissipation history of stars on the evolution of close-in planets
• Evidence for a Dayside Thermal Inversion and High Metallicity for the Hot Jupiter WASP-18b
• Are falling planets spinning up their host stars?
• Three-Dimensional Circulation Driving Chemical Disequilibrium in WASP-43b
• Revisiting the Phase Curves of WASP-43b: Confronting Reanalyzed Spitzer Data with Cloudy Atmospheres
• NGTS-4b: A sub-Neptune Transiting in the Desert
• Characterisation of the radial velocity signal induced by rotation in late-type dwarfs
• The Next Generation Transit Survey (NGTS)
• Hierarchical Bayesian calibration of tidal orbit decay rates among hot Jupiters
• The GTC exoplanet transit spectroscopy survey I: OSIRIS transmission spectroscopy of the short period planet WASP-43b
• Sparkling nights and very hot days on WASP-18b: the formation of clouds and the emergence of an ionosphere
• Bayesian mass and age estimates for transiting exoplanet host stars
• The Possible Orbital Decay and Transit Timing Variations of the Planet WASP-43b
• Broad-band transmission spectrum and K-band thermal emission of WASP-43b as observed from the ground
• NGTS clusters survey. I. Rotation in the young benchmark open cluster Blanco 1
• NGTS-7Ab: An ultra-short period brown dwarf transiting a tidally-locked and active M dwarf
• DONUTS: A science frame autoguiding algorithm with sub-pixel precision, capable of guiding on defocused stars
• Precise photometric transit follow-up observations of five close-in exoplanets : update on their physical properties
• Signs of strong Na and K absorption in the transmission spectrum of WASP-103b
• Searching For Rapid Orbital Decay of WASP-18b
• The age of the Galactic thin disk from Th/Eu nucleocosmochronology III. Extended sample
• Revisiting the Energy Budget of WASP-43b: Enhanced day-night heat transport
• Ruling out the orbital decay of the WASP-43b
• Near-Infrared Emission Spectrum of WASP-103b using Hubble Space Telescope/Wide Field Camera 3
• KELT-16b: A highly irradiated, ultra-short period hot Jupiter nearing tidal disruption
• HATS-18 b: An Extreme Short--Period Massive Transiting Planet Spinning Up Its Star
• Centroid vetting of transiting planet candidates from the Next Generation Transit Survey
• Multi-filter transit observations of WASP-39b and WASP-43b with three San Pedro Mártir telescopes
• Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system
• NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf
• NGTS-6b: An Ultra Short Period Hot-Jupiter Orbiting an Old K Dwarf
• Formation of hot Jupiters through disk migration and evolving stellar tides
• Discarding orbital decay in WASP-19b after one decade of transit observations
• NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert
• The Next Generation Transit Survey - Prototyping Phase
• Orbital decay of short-period gas giants under evolving tides
• NGTS-8b and NGTS-9b: two non-inflated hot-Jupiters

Cited by in corpus (18)

• Tidal dissipation in evolving low-mass and solar-type stars with predictions for planetary orbital decay
• TESS Transit Timing of Hundreds of Hot Jupiters
• Exoplanet weather and climate regimes with clouds and thermal ionospheres: A model grid study in support of large-scale observational campaigns
• Three Short Period Jupiters from TESS
• Determining the mass of the planetary candidate HD 114762 b using Gaia
• The influence of planetary engulfment on stellar rotation in metal-poor main-sequence stars
• Migrating Planets into Ultra-Short-Period Orbits during Episodic Accretion Events
• The impact of tidal friction evolution on the orbital decay of ultra-short period planets
• Orbital period modulation in hot Jupiter systems
• TATOO: a tidal-chronology standalone tool to estimate the age of massive close-in planetary systems
• NGTS-21b: An Inflated Super-Jupiter Orbiting a Metal-poor K dwarf
• Forming short period sub-stellar companions in 47 Tucanae -- II. Analytic expressions for the orbital evolution of planets in dense environments
• Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
• Horizontal transport as a source of disequilibrium chemistry on the nightside of a hot exoplanet
• A search for transit timing variations in the transiting hot Jupiter systems HIP 65, NGTS-6, NGTS-10 and WASP-173
• Impacts of Tidal Locking on Magnetospheric Energy Input to Exoplanet Atmospheres
• Search for (sub)stellar companions of exoplanet hosts by exploring the second ESA-Gaia data release
• ExoEcho: Exoplanet Ephemerides Change Observations. III. A JWST Survey for Transit Timing Variations of 37 Exoplanets