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Photometric surveys such as Kepler have the precision to identify exoplanet and eclipsing binary candidates from only a single transit. K2, with its 75d campaign duration, is ideally suited to detect significant numbers of single-eclipsing…

We report the results of a prototype photometric search for transiting extrasolar planets using Subaru Suprime-Cam. Out of about 100,000 stars monitored around the Galactic plane (l=90 degree,b=0 degree), we find that 7,700 (27,000) stars…

In this work, we present the analysis of 976 814 FGKM dwarf and sub-giant stars in the TESS Full Frame Images (FFIs) of the Southern ecliptic hemisphere. We present a new pipeline, DIAmante, developed to extract optimized, multi-sector…

Earth and Planetary Astrophysics · Physics 2020-08-25 M. Montalto , L. Borsato , V. Granata , G. Lacedelli , L. Malavolta , E. E. Manthopoulou , D. Nardiello , V. Nascimbeni , G. Piotto

Currently, we have only limited means to probe the presence of planets at large orbital separations. Foreman-Mackey et al. searched for long-period transiting planets in the Kepler light curves using an automated pipeline. Here, we apply…

Earth and Planetary Astrophysics · Physics 2019-07-17 Miranda K. Herman , Wei Zhu , Yanqin Wu

We present design considerations for a ground-based survey for transiting exoplanets around L and T dwarfs, spectral classes that have yet to be thoroughly probed for planets. We simulate photometry for L and T targets with a variety of…

Earth and Planetary Astrophysics · Physics 2019-10-09 Patrick Tamburo , Philip S. Muirhead

We study the statistical characteristics of a box-fitting algorithm to analyze stellar photometric time series in the search for periodic transits by extrasolar planets. The algorithm searches for signals characterized by a periodic…

Astrophysics · Physics 2016-08-30 G. Kovács , S. Zucker , T. Mazeh

Radial velocity searches for extrasolar planets have recently detected several very low mass (7-20M_Earth) planets in close orbits with periods <10 days. We consider the prospects for detecting the analogs of these planets in Galactic open…

Astrophysics · Physics 2007-05-23 Joshua Pepper , B. Scott Gaudi

Most of the known transiting exoplanets are in short-period orbits, largely due to the bias inherent in detecting planets through the transit technique. However, the eccentricity distribution of the known radial velocity planets results in…

Earth and Planetary Astrophysics · Physics 2015-05-19 Stephen R. Kane , Sabine Reffert , Gregory W. Henry , Debra Fischer , Christian Schwab , Kelsey I. Clubb , Christoph Bergmann

Several planet-search groups have acquired a great deal of data in the form of time-series spectra of several hundred nearby stars with time baselines of over a decade. While binary star detections are generally not the goal of these…

Solar and Stellar Astrophysics · Physics 2015-12-16 Kevin Gullikson , Michael Endl , William D. Cochran , Phillip J. MacQueen

We present the results of an extensive study of the detectability of Earth-sized planets and super-Earths in the habitable zones of cool and low-mass stars using transit timing variation method. We have considered a system consisting of a…

Earth and Planetary Astrophysics · Physics 2015-05-28 Nader Haghighipour , Sabrina Kirste

Context: New eclipse minimum timings of the M4.5/M4.5 binary CM Dra were obtained between the years 2000 and 2007. In combination with published timings going back to 1977, a clear non-linearity in observed-minus-calculated (O-C) times has…

Astrophysics · Physics 2009-11-13 H. J. Deeg , B. Ocaña , V. P. Kozhevnikov , D. Charbonneau , F. T. O'Donovan , L. R. Doyle

Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted transit depths. However, these giant host stars are also some of the brightest in the…

We apply, for the first time, the Transit Least Squares (TLS) algorithm to search for new transiting exoplanets. TLS is a successor to the Box Least Squares (BLS) algorithm, which has served as a standard tool for the detection of periodic…

Earth and Planetary Astrophysics · Physics 2019-05-23 René Heller , Kai Rodenbeck , Michael Hippke

The bright $(V=3.86)$ star $\beta$ Pictoris is a nearby young star with a debris disk and gas giant exoplanet, $\beta$ Pictoris b, in a multi-decade orbit around it. Both the planet's orbit and disk are almost edge-on to our line of sight.…

Earth and Planetary Astrophysics · Physics 2018-05-15 M. Mol Lous , E. Weenk , M. A. Kenworthy , K. Zwintz , R. Kuschnig

HP Dra is a well-detached eclipsing binary containing two late-F stars on an orbit with a relatively large period of 10.76 d and a small eccentricity of 0.036. It has been observed in 14 sectors using the Transiting Exoplanet Survey…

Solar and Stellar Astrophysics · Physics 2025-08-07 John Southworth

We conducted a global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey - a prototype of the SPECULOOS transit search conducted with the TRAPPIST-South robotic telescope in Chile from 2011 to 2017 - to estimate the occurrence rate of…

Earth and Planetary Astrophysics · Physics 2020-07-22 F. Lienhard , D. Queloz , M. Gillon , A. Burdanov , L. Delrez , E. Ducrot , W. Handley , E. Jehin , C. A. Murray , A. H. M. J. Triaud , E. Gillen , A. Mortier , B. V. Rackham

The Wide Angle Search for Planets (WASP) photometrically surveys a large number of nearby stars to uncover candidate extrasolar planet systems by virtue of small-amplitude lightcurve dips on a < 5-day timescale typical of the…

We provide the catalogue of all transit-like features, including false alarms, detected by the CoRoT exoplanet teams in the 177 454 light curves of the mission. All these detections have been re-analysed with the same softwares so that to…

In the coming decades, research in extrasolar planets aims to advance two goals: 1) detecting and characterizing low-mass planets increasingly similar to the Earth, and 2) improving our understanding of planet formation. We present a new…

Astrophysics · Physics 2007-05-23 Jason H. Steffen , B. Scott Gaudi , Eric B. Ford , Eric Agol , Mathew J. Holman

We have made a comprehensive transit search for exoplanets down to ~1.5 - 2 Earth radii in the HD 189733 system, based on 21-days of nearly uninterrupted broadband optical photometry obtained with the MOST (Microvariability & Oscillations…