Transit-period search from single-event space-based data: the role of wide-field surveys

Abstract

We investigate the optimization of dataset weighting in searching for the orbital period of transiting planets when high-precision space-based data with a single transit event are combined with (relatively) low-precision ground-based (wide-field) data. The optimization stems from the lack of multiple events in the high-precision data and the likely presence of such events in the low-precision data. With noise minimization, we combined two types of frequency spectra: i) spectra that use two fixed transit parameters (moment of the center of the transit and duration of the event) derived from the space data alone; ii) spectra that result from the traditional weighted box signal search with optimized transit parameters for each trial period. We used many mock signals to test the detection power of the method. Marginal or no detections in the ground-based data may lead to secure detections in the combined data with the above weighting. Depending on the coverage and quality of the ground-based data, transit depths of ~0.05% and periods up to ~100days are accessible by the suggested optimum combination of the data.

arXiv commentto appear in A&A, 11 pages, 0.9Mb

References in corpus (27)

• The Transiting Exoplanet Survey Satellite
• The WASP Project and the SuperWASP Cameras
• A box-fitting algorithm in the search for periodic transits
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• Wide-field millimagnitude photometry with HAT: A Tool for Extra-solar Planet Detection
• The Transiting Exoplanet Survey Satellite: Simulations of planet detections and astrophysical false positives
• HAT-P-11b: A Super-Neptune Planet Transiting a Bright K Star in the Kepler Field
• The Kilodegree Extremely Little Telescope (KELT): A Small Robotic Telescope for Large-Area Synoptic Surveys
• A Revised Exoplanet Yield from the Transiting Exoplanet Survey Satellite (TESS)
• HD147506b: A Super-Massive Planet in an Eccentric Orbit Transiting a Bright Star
• The KELT-South Telescope
• TESS full orbital phase curve of the WASP-18b system
• HAT-P-6b: A Hot Jupiter transiting a bright F star
• Transits and Occultations
• Precision Light Curves from TESS Full-Frame Images: A Difference Imaging Approach
• Five Planets Transiting a Ninth Magnitude Star
• HATS-17b: A Transiting Compact Warm Jupiter in a 16.3 Days Circular Orbit
• Single Transit Candidates from K2: Detection and Period Estimation
• An Estimate of the Yield of Single-Transit Planetary Events from the Transiting Exoplanet Survey Satellite
• Characterizing Long-Period Transiting Planets Observed by Kepler
• A Discrete Set of Possible Transit Ephemerides for Two Long Period Gas Giants Orbiting HIP 41378
• Single site observations of \textit{TESS} single transit detections
• Directed follow-up strategy of low-cadence photometric surveys in Search of transiting exoplanets - I. Bayesian approach for adaptive scheduling
• Planet Detection Simulations for Several Possible TESS Extended Missions
• The secondary transit of the hot Jupiter WASP-121b at 2 $\mu$m
• Directed follow-up strategy of low-cadence photometric surveys in Search of Transiting Exoplanets - II. application to Gaia
• Precovery of TESS Single Transits with KELT

Cited by in corpus (1)

• On the follow-up efforts of long-period transiting planet candidates detected with Gaia astrometry