KPS-1b: the first transiting exoplanet discovered using an amateur astronomer's wide-field CCD data

Abstract

We report the discovery of the transiting hot Jupiter KPS-1b. This exoplanet orbits a V=13.0 K1-type main-sequence star every 1.7 days, has a mass of $1.090_{-0.087}^{+0.086}$ $M_{\mathrm{Jup}}$ and a radius of $1.03_{-0.12}^{+0.13}$ $R_{\mathrm{Jup}}$. The discovery was made by the prototype Kourovka Planet Search (KPS) project, which used wide-field CCD data gathered by an amateur astronomer using readily available and relatively affordable equipment. Here we describe the equipment and observing technique used for the discovery of KPS-1b, its characterization with spectroscopic observations by the SOPHIE spectrograph and with high-precision photometry obtained with 1-m class telescopes. We also outline the KPS project evolution into the Galactic Plane eXoplanet survey (GPX). The discovery of KPS-1b represents a new major step of the contribution of amateur astronomers to the burgeoning field of exoplanetology.

arXiv comment12 pages, 8 figures, accepted for publication in PASP (Publications of the Astronomical Society of the Pacific)

References in corpus (44)

• The Transiting Exoplanet Survey Satellite
• Analytic Lightcurves for Planetary Transit Searches
• The K2 Mission: Characterization and Early results
• The PLATO 2.0 Mission
• The WASP Project and the SuperWASP Cameras
• Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits
• A box-fitting algorithm in the search for periodic transits
• Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• The NASA Exoplanet Archive: Data and Tools for Exoplanet Research
• The CoRoT satellite in flight : description and performance
• Defining and cataloging exoplanets: The exoplanet.eu database
• The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD108147 and HD168746
• Wide-field millimagnitude photometry with HAT: A Tool for Extra-solar Planet Detection
• Homogeneous studies of transiting extrasolar planets. IV. Thirty systems with space-based light curves
• Correcting systematic effects in a large set of photometric lightcurves
• TrES-1: The Transiting Planet of a Bright K0V Star
• Spin-orbit angle measurements for six southern transiting planets; New insights into the dynamical origins of hot Jupiters
• The Frequency of Hot Jupiters Orbiting Nearby Solar-Type Stars
• KELT-1b: A Strongly Irradiated, Highly Inflated, Short Period, 27 Jupiter-mass Companion Transiting a mid-F Star
• Starspots, spin-orbit misalignment, and active latitudes in the HAT-P-11 exoplanetary system
• The Exoplanet Orbit Database II: Updates to exoplanets.org
• WASP-3b: a strongly-irradiated transiting gas-giant planet
• The Transit Light Curve (TLC) Project. I. Four Consecutive Transits of the Exoplanet XO-1b
• HATSouth: a global network of fully automated identical wide-field telescopes
• Misaligned spin-orbit in the XO-3 planetary system?
• Exoplanetary Atmospheres - Chemistry, Formation Conditions, and Habitability
• The TRAPPIST survey of southern transiting planets. I. Thirty eclipses of the ultra-short period planet WASP-43 b
• The XO Project: Searching for Transiting Extra-solar Planet Candidates
• Starspots and spin-orbit alignment in the WASP-4 exoplanetary system
• Planet Hunters: The First Two Planet Candidates Identified by the Public using the Kepler Public Archive Data
• An Improved Method for Estimating the Masses of Stars with Transiting Planets
• The retrograde orbit of the HAT-P-6b exoplanet
• The SOPHIE search for northern extrasolar planets III. A Jupiter-mass companion around HD 109246
• Highlights in the Study of Exoplanet Atmospheres
• SOPHIE velocimetry of Kepler transit candidates XII. KOI-1257 b: a highly eccentric three-month period transiting exoplanet
• Benchmarking the power of amateur observatories for TTV exoplanets detection
• Spin-orbit inclinations of the exoplanetary systems HAT-P-8, HAT-P-9, HAT-P-16 and HAT-P-23
• The MASTER-II Network of Robotic Optical Telescopes. First Results
• The EMCCD-Based Speckle Interferometer of the BTA 6-m Telescope: Description and First Results
• WASP-50b: a hot Jupiter transiting a moderately active solar-type star
• Tidal and Magnetic Interactions between a Hot Jupiter and its Host Star in the Magnetospheric Cavity of a Protoplanetary Disk
• Astrokit -- an Efficient Program for High-Precision Differential CCD Photometry and Search for Variable Stars
• First results of the Kourovka Planet Search: discovery of transiting exoplanet candidates in the first three target fields

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• TESS Transit Timing of Hundreds of Hot Jupiters
• ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
• ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides
• Utilizing Small Telescopes Operated by Citizen Scientists for Transiting Exoplanet Follow-up
• ExoClock Project: An open platform for monitoring the ephemerides of Ariel targets with contributions from the public
• Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets
• Discovery of a pre-cataclysmic binary with unusual chromaticity of the eclipsed white dwarf by the GPX Survey
• Efficient Follow-Up of Exoplanet Transits Using Small Telescopes
• Homogeneous search for spot transits in Kepler and TESS photometry of K $-$ M-type main-sequence stars
• Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey