Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry

Abstract

We have initiated a dedicated project to follow-up with ground-based photometry the transiting planets discovered by CoRoT in order to refine the orbital elements, constrain their physical parameters and search for additional bodies in the system. From 2012 September to 2016 December we carried out 16 transit observations of six CoRoT planets (CoRoT-5b, CoRoT-8b, CoRoT-12b, CoRoT-18b, CoRoT-20b, and CoRoT-27b) at three observatories located in Germany and Spain. These observations took place between 5 and 9 yr after the planet's discovery, which has allowed us to place stringent constraints on the planetary ephemeris. In five cases we obtained light curves with a deviation of the mid-transit time of up to ~115min from the predictions. We refined the ephemeris in all these cases and reduced the uncertainties of the orbital periods by factors between 1.2 and 33. In most cases our determined physical properties for individual systems are in agreement with values reported in previous studies. In one case, CoRoT-27b, we could not detect any transit event in the predicted transit window.

arXiv comment17 pages, 23 figures, 15 tables, accepted by MNRAS

References in corpus (35)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Analytic Lightcurves for Planetary Transit Searches
• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
• The NASA Exoplanet Archive: Data and Tools for Exoplanet Research
• The CoRoT satellite in flight : description and performance
• EXOFAST: A fast exoplanetary fitting suite in IDL
• Homogeneous studies of transiting extrasolar planets. IV. Thirty systems with space-based light curves
• KEPLER's First Rocky Planet: Kepler-10b
• Parameter Estimation from Time-Series Data with Correlated Errors: A Wavelet-Based Method and its Application to Transit Light Curves
• Stellar Limb-Darkening Coefficients for CoRot and Kepler
• Calibrating Gyrochronology using Kepler Asteroseismic targets
• Homogeneous studies of transiting extrasolar planets. V. New results for 38 planets
• How stellar activity affects the size estimates of extrasolar planets
• Effect of stellar spots on high-precision transit light-curve
• Homogeneous studies of transiting extrasolar planets. II. Physical properties
• The effect of stellar limb darkening values on the accuracy of the planet radii derived from photometric transit observations
• Transit Analysis Package (TAP and autoKep): IDL Graphical User Interfaces for Extrasolar Planet Transit Photometry
• Mass-loss rates for transiting exoplanets
• Transiting exoplanets from the CoRoT space mission: VII. The "hot-Jupiter"-type planet CoRoT-5b
• Transiting exoplanets from the CoRoT space mission. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf
• XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet
• Constraints on a second planet in the WASP-3 system
• High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere
• Transiting exoplanets from the CoRoT space mission. XII. CoRoT-12b: a short-period low-density planet transiting a solar analog star
• Transit timing of TrES-2: a combined analysis of ground- and space-based photometry
• Secondary eclipses in the CoRoT light curves: A homogeneous search based on Bayesian model selection
• STK: A new CCD camera at the University Observatory Jena
• Transiting exoplanets from the CoRoT space mission XXV. CoRoT-27b: a massive and dense planet on a short-period orbit
• Transiting exoplanets from the CoRoT space mission. XVIII. CoRoT-18b: a massive hot jupiter on a prograde, nearly aligned orbit
• WASP-14 b: Transit Timing analysis of 19 light curves
• YETI observations of the young transiting planet candidate CVSO 30 b
• CTK - A new CCD Camera at the University Observatory Jena

Cited by in corpus (8)

• TESS Transit Timing of Hundreds of Hot Jupiters
• Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets
• Securing the legacy of TESS through the care and maintenance of TESS planet ephemerides
• TESS Data for Asteroseismology: Light Curve Systematics Correction
• Radial Velocity Survey for Planets around Young stars (RVSPY) A transiting warm super-Jovian planet around HD 114082, a young star with a debris disk
• Three Warm Jupiters around Solar-analog stars detected with TESS
• K2-HERMES II. Planet-candidate properties from K2 Campaigns 1-13
• On the Need for a Classification System for Consistent Characterization of the Composition of Planetary Bodies