Precise photometric transit follow-up observations of five close-in exoplanets : update on their physical properties
arXiv:1905.11258 · doi:10.3847/1538-3881/ab24dd
Abstract
We report the results of the high precision photometric follow-up observations of five transiting hot jupiters - WASP-33b, WASP-50b, WASP-12b, HATS-18b and HAT-P-36b. The observations are made from the 2m Himalayan Chandra Telescope at Indian Astronomical Observatory, Hanle and the 1.3m J. C. Bhattacharyya Telescope at Vainu Bappu Observatory, Kavalur. This exercise is a part of the capability testing of the two telescopes and their back-end instruments. Leveraging the large aperture of both the telescopes used, the images taken during several nights were used to produce the transit light curves with high photometric S/N () by performing differential photometry. In order to reduce the fluctuations in the transit light curves due to various sources such as stellar activity, varying sky transparency etc. we preprocessed them using wavelet denoising and applied Gaussian process correlated noise modeling technique while modeling the transit light curves. To demonstrate the efficiency of the wavelet denoising process we have also included the results without the denoising process. A state-of-the-art algorithm used for modeling the transit light curves provided the physical parameters of the planets with more precise values than reported earlier.
arXiv comment24 pages including 12 figures with 13 subfigures and 5 tables. It has been accepted for publishing in the Astronomical Journal
References in corpus (20)
- emcee: The MCMC Hammer
- Analytic Lightcurves for Planetary Transit Searches
- Detection of Planetary Transits Across a Sun-like Star
- Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
- Temperate Earth-sized planets transiting a nearby ultracool dwarf star
- Line-profile tomography of exoplanet transits -- II. A gas-giant planet transiting a rapidly-rotating A5 star
- On Correlated-noise Analyses Applied To Exoplanet Light Curves
- A method for the direct determination of the surface gravities of transiting extrasolar planets
- Ground-based near-UV observations of 15 transiting exoplanets: Constraints on their atmospheres and no evidence for asymmetrical transits
- Transit Timing Variation Measurements of WASP-12b and Qatar-1b: No Evidence for Additional Planets
- HAT-P-34b -- HAT-P-37b: Four Transiting Planets More Massive Than Jupiter Orbiting Moderately Bright Stars
- Radial Velocity Observations and Light Curve Noise Modeling Confirm That Kepler-91b is a Giant Planet Orbiting a Giant Star
- Measurement of the Nodal Precession of WASP-33 b via Doppler Tomography
- WASP-33: The first delta Scuti exoplanet host star
- The GAPS Programme with HARPS-N at TNG VIII: Observations of the Rossiter-McLaughlin effect and characterisation of the transiting planetary systems HAT-P-36 and WASP-11/HAT-P-10
- WASP-50b: a hot Jupiter transiting a moderately active solar-type star
- Pulsation analysis and its impact on primary transit modeling in WASP-33
- HATS-18 b: An Extreme Short--Period Massive Transiting Planet Spinning Up Its Star
- On signals faint and sparse: the ACICA algorithm for blind de-trending of Exoplanetary transits with low signal-to-noise
- TFAW: wavelet-based signal reconstruction to reduce photometric noise in time-domain surveys
Cited by in corpus (34)
- Carbon monoxide emission lines reveal an inverted atmosphere in the ultra hot Jupiter WASP-33 b consistent with an eastward hot spot
- Assessing the C/O Ratio Formation Diagnostic: A Potential Trend with Companion Mass
- Stellar Rotation in the K2 Sample: Evidence for Modified Spindown
- Time-resolved rotational velocities in the upper atmosphere of WASP-33 b
- A Search for FeH in Hot-Jupiter Atmospheres with High-Dispersion Spectroscopy
- NGTS-10b: The shortest period hot Jupiter yet discovered
- Pseudo-2D Modelling of Heat Redistribution Through H Thermal Dissociation/Recombination: Consequences for Ultra-Hot Jupiters
- Search for TiO and Optical Night-side Emission from the Exoplanet WASP-33b
- A Fast, 2D Gaussian Process Method Based on Celerite: Applications to Transiting Exoplanet Discovery and Characterization
- Exoplanet Interior Retrievals: core masses and metallicities from atmospheric abundances
- Multi-band transit follow up observations of five hot-Jupiters with critical noise treatments: Improved physical properties
- Chemical evolution of local post-starburst galaxies: Implications for the mass-metallicity relation
- TASTE V. A new ground-based investigation of orbital decay in the ultra-hot Jupiter WASP-12b
- Titanium chemistry of WASP-121 b with ESPRESSO in 4-UT mode
- Migrating Planets into Ultra-Short-Period Orbits during Episodic Accretion Events
- Tidal Response and Shape of Hot Jupiters
- Constraints on TESS albedos for five hot Jupiters
- Gravity darkening and tidally perturbed stellar pulsation in the misaligned exoplanet system WASP-33
- Probing Transit Timing Variations of Three Hot-Jupiters: HATP-36b, HATP-56b, and WASP-52b
- Transit Light-curves for Exomoons: Analytical Formalism
- Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
- Precise Transit Photometry Using TESS: Updated Physical Properties for 28 Exoplanets Around Bright Stars
- Hotter Than Expected: HST/WFC3 Phase-resolved Spectroscopy of a Rare Irradiated Brown Dwarf with Strong Internal Heat Flux
- TFAW survey. I. Wavelet-based denoising of K2 light curves. Discovery and validation of two new Earth-sized planets in K2 campaign 1
- An Analytic Characterization of the Limb Asymmetry -- Transit Time Degeneracy
- Generic Models for Disk-Resolved and Disk-Integrated Phase Dependent Linear Polarization of Light Reflected from Exoplanets
- An Early Look at the Performance of IGRINS-2 at Gemini-North with Application to the ultrahot Jupiter, WASP-33 b
- Retrieving interior properties of hot Jupiters with Love numbers and atmospheric measurements
- Refined Ephemeris for Four Hot Jupiters using Ground-Based and TESS Observations
- PEPSI's non-detection of escaping hydrogen and metal lines adds to the enigma of WASP-12 b
- Cleaning WASP-33 b transits from the host star photometric variability: analysis of TESS data from two sectors
- Thermal emission spectra of the ultra-hot Jupiter WASP-33 b
- Comparing Results from Two Uniform Phase Curve Surveys
- Day-side Fe I Emission, Day-Night Brightness Contrast and Phase Offset of the Exoplanet WASP-33b