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200 papers

When searching for exoplanets, one wants to count how many planets orbit a given star, and to determine what their characteristics are. If the estimated planet characteristics are too far from those of a planet truly present, this should be…

Instrumentation and Methods for Astrophysics · Physics 2025-03-25 Nathan C. Hara , Thibault de Poyferré , Jean-Baptiste Delisle , Marc Hoffmann

The radius of a planet is a fundamental parameter that probes its composition and habitability. Precise radius measurements are typically derived from the fraction of starlight blocked when a planet transits its host star. The wide-field…

Earth and Planetary Astrophysics · Physics 2025-11-12 Te Han , Paul Robertson , Timothy D. Brandt , Shubham Kanodia , Caleb Cañas , Avi Shporer , George Ricker , Corey Beard

Eclipsing binaries are important benchmark objects to test and calibrate stellar structure and evolution models. This is especially true for binaries with a fully convective M-dwarf component for which direct measurements of these stars'…

We focus on the automated classification of eclipsing binary stars using deep learning methods to handle the vast data generated by large-scale photometric sky surveys. These surveys produce extensive datasets that are impractical for…

Solar and Stellar Astrophysics · Physics 2026-03-27 Bedri Keskin , Özgür Baştürk

We introduce a catalog of stellar properties for stars observed by the Kepler follow-on mission, K2. We base the catalog on a cross-match between the K2 Campaign target lists and the current working version of the NASA TESS target catalog.…

Solar and Stellar Astrophysics · Physics 2016-07-12 Keivan G. Stassun , Joshua A. Pepper , Ryan Oelkers , Martin Paegert , Nathan De Lee , Roberto Sanchis-Ojeda

Multi-planet system architectures are frequently used to constrain possible formation and evolutionary pathways of observed exoplanets. Therefore, understanding the predictive and descriptive power of empirical models of these systems is…

Earth and Planetary Astrophysics · Physics 2025-04-17 Emma V. Turtelboom , Jamie Dietrich , Courtney D. Dressing , Caleb K. Harada

We have developed a procedure for the classification of eclipsing binaries from their light-curve parameters and spectral type. The procedure was tested on more than 1000 systems with known classification, and its efficiency was estimated…

Solar and Stellar Astrophysics · Physics 2014-09-09 Ekaterina Avvakumova , Oleg Malkov

Space telescopes such as EChO (Exoplanet Characterisation Observatory) and JWST (James Webb Space Telescope) will be important for the future study of extrasolar planet atmospheres. Both of these missions are capable of performing high…

Earth and Planetary Astrophysics · Physics 2012-12-21 Joanna K. Barstow , Suzanne Aigrain , Patrick G. J. Irwin , Neil Bowles , Leigh N. Fletcher , Jae-Min Lee

Transiting planet systems offer a unique opportunity to measure the masses and radii of many planets and their host stars. Yet, relative photometry and radial velocity measurements alone only constrain the density of the host star. In…

Earth and Planetary Astrophysics · Physics 2024-08-08 Alison Duck , B. Scott Gaudi , Jason D. Eastman , Joseph E. Rodriguez

Precise physical properties of the known transiting exoplanets are essential for their precise atmospheric characterization using modern and upcoming instruments. Leveraging the large volume of high SNR photometric follow-up data from TESS,…

Earth and Planetary Astrophysics · Physics 2025-11-25 Suman Saha

The direct detection of new extrasolar planets from high-precision photometry data is commonly based on the observation of the transit signal of the planet as it passes in front of its star. Close-in planets, however, leave additional…

Earth and Planetary Astrophysics · Physics 2021-10-04 J. Lillo-Box , S. Millholland , G. Laughlin

A novel artificial intelligence (AI) technique that uses machine learning (ML) methodologies combines several algorithms, which were developed by ThetaRay, Inc., is applied to NASA's Transiting Exoplanets Survey Satellite (TESS) dataset to…

Earth and Planetary Astrophysics · Physics 2021-09-08 Leon Ofman , Amir Averbuch , Adi Shliselberg , Idan Benaun , David Segev , Aron Rissman

In close eclipsing binaries, measurements of the variations in binary's eclipse timing may be used to infer information about the existence of circumbinary objects. To determine the possibility of the detection of such variations with CoRoT…

Earth and Planetary Astrophysics · Physics 2015-05-27 R. Schwarz , N. Haghighipour , S. Eggl , E. Pilat-Lohinger , B. Funk

NASA's all-sky survey mission, the Transiting Exoplanet Survey Satellite (TESS), is specifically engineered to detect exoplanets that transit bright stars. Thus far, TESS has successfully identified approximately 400 transiting exoplanets,…

The T16 project has produced a uniformly detrended and systematics-corrected set of 83,717,159 TESS Cycle 1 full-frame image light curves for stars observed by TESS in its primary mission down to T=16 mag, enabling sensitive transit…

Our incomplete understanding of the formation of gas giants and of their mass-radius relationship has motivated ground-based, wide-field surveys for new transiting extrasolar giant planets. Yet, astrophysical false positives have dominated…

Astrophysics · Physics 2007-05-23 Francis T. O'Donovan , David Charbonneau

We recently used near-infrared spectroscopy to improve the characterization of 76 low-mass stars around which K2 had detected 79 candidate transiting planets. Thirty of these worlds were new discoveries that have not previously been…

In a few years the Kepler and TESS missions will provide ultra-precise photometry for thousands of RR Lyrae and hundreds of Cepheid stars. In the extended Kepler mission all targets are proposed in the Guest Observer (GO) Program, while the…

Solar and Stellar Astrophysics · Physics 2016-03-25 E. Plachy , L. Molnár , R. Szabó , K. Kolenberg , E. Bányai

When an exoplanet passes in front of its host star, the resulting eclipse causes an observable decrease in stellar flux, and when multiple such transits are detected, the orbital period of the exoplanet can be determined. Over the past six…

Earth and Planetary Astrophysics · Physics 2025-05-22 Dillon Bass , Daniel Fabrycky