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In the era of photometry with space-based telescopes, such as CHEOPS (CHaracterizing ExOPlanets Satellite), JWST (James Webb Space Telescope), PLATO (PLAnetary Transits and Oscillations of stars), and ARIEL (Atmospheric Remote-sensing…

Earth and Planetary Astrophysics · Physics 2025-07-22 Sz. Kálmán , Sz. Csizmadia , L. M. Bernabó , R. Szabó , Gy. M. Szabó

We present detailed asteroseismic modelling of 95 main-sequence solar-like stars and Kepler exoplanet host stars using the FICO procedure, a three-step method that combines forward and inverse techniques that enables precise inference of…

Solar and Stellar Astrophysics · Physics 2026-05-01 Jérôme Bétrisey , Daniel R. Reese , Camilla Pezzotti , Marie-Jo Goupil , Margarida S. Cunha

Detecting the faint emission of a secondary source in the proximity of the much brighter source has been the most severe obstacle for using direct imaging in searching for exoplanets. Using quantum state discrimination and quantum imaging…

Quantum Physics · Physics 2021-09-29 Zixin Huang , Cosmo Lupo

This work is part of an ongoing project which aims to detect terrestrial planets in our neighbouring star system $\alpha$ Centauri using the Doppler method. Owing to the small angular separation between the two components of the $\alpha$…

Earth and Planetary Astrophysics · Physics 2014-12-22 Christoph Bergmann , Michael Endl , John B. Hearnshaw , Robert A. Wittenmyer , Duncan J. Wright

We present a matched-filter based algorithm for transit detection and its application to simulated COROT light curves. This algorithm stems from the work by Bord\'e, Rouan & L\'eger (2003). We describe the different steps we intend to take…

Astrophysics · Physics 2008-11-26 P. Bordé , F. Fressin , M. Ollivier , A. Léger , D. Rouan

The ESA's PLAnetary Transits and Oscillations of Stars (PLATO) mission aims to detect planets orbiting around dwarfs and subgiant stars with spectral type F5 or later, including M-dwarfs. The PLATO Input Catalogue (PIC) contains all targets…

PLATO (PLAnetary Transits and Oscillations of stars) is an ESA M-class satellite planned for launch by end 2026 and dedicated to the wide-field search of transiting planets around bright and nearby stars, with a strong focus on discovering…

Strong variations of any kind and causes within a stellar light curve may prohibit the detection of transits, particularly of faint or shallow transits caused by small planets passing in front of the stellar disk. The success of future…

Instrumentation and Methods for Astrophysics · Physics 2016-07-29 Sascha Grziwa , Martin Pätzold

High-resolution Doppler spectroscopy is a powerful tool for identifying molecular species in the atmospheres of both transiting and non-transiting exoplanets. Currently, such data is analysed using cross-correlation techniques to detect the…

Earth and Planetary Astrophysics · Physics 2019-10-09 Christopher Watson , Ernst de Mooij , Danny Steeghs , Tom Marsh , Matteo Brogi , Neale Gibson , Shannon Matthews

The Hubble Space Telescope (HST) and the Kepler space mission observed a large number of planetary transits showing anomalies due to starspot eclipses, with more such observations expected in the near future by the K2 mission and the…

Earth and Planetary Astrophysics · Physics 2014-07-18 Bence Béky , David M. Kipping , Matthew J. Holman

Estimating accurate bolometric fluxes for stars requires reliable photometry to absolutely flux calibrate the spectra. This is a significant problem for studies of very bright stars, which are generally saturated in modern photometric…

Solar and Stellar Astrophysics · Physics 2015-06-23 Andrew W. Mann , Kaspar von Braun

We present the first public release of photometric redshifts, galaxy rest-frame properties and associated magnification values in the cluster and parallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416. We exploit a…

Using the OSIRIS instrument installed on the 10.4-m Gran Telescopio Canarias (GTC) we acquired multi-color transit photometry of four small (Rp < 5 R_Earth) short-period (P < 6 days) planet candidates recently identified by the Kepler space…

Earth and Planetary Astrophysics · Physics 2016-03-02 Knicole D. Colón , Eric B. Ford , Robert C. Morehead

We present a technique for verifying or refuting exoplanet candidates from the Transiting Exoplanet Survey Satellite (TESS) mission by searching for nearby eclipsing binary stars using higher-resolution archival images from ground-based…

Earth and Planetary Astrophysics · Physics 2023-12-14 Gabrielle Ross , Andrew Vanderburg , Zoë L. de Beurs , Karen A. Collins , Rob J. Siverd , Kevin Burdge

We set out a simulation to explore the follow-up of exoplanet candidates. We look at comparing photometric (transit method) and spectroscopic (Doppler shift method) techniques using three instruments: NGTS, HARPS and CORALIE. We take into…

Earth and Planetary Astrophysics · Physics 2020-05-13 Benjamin F. Cooke , Don Pollacco

Observing extrasolar planetary transits is one of the only ways that we may infer the masses and radii of planets outside the Solar System. As such, the detections made by photometric transit surveys are one of the only foreseeable ways…

Astrophysics · Physics 2009-11-13 Thomas G. Beatty

This paper presents GPFC, a novel Graphics Processing Unit (GPU) Phase Folding and Convolutional Neural Network (CNN) system to detect exoplanets using the transit method. We devise a fast folding algorithm parallelized on a GPU to amplify…

Earth and Planetary Astrophysics · Physics 2024-02-22 Kaitlyn Wang , Jian Ge , Kevin Willis , Kevin Wang , Yinan Zhao

This study aims to assess the potential of the upcoming PLATO mission to investigate exoplanet populations around stars in diverse Galactic environments, specifically focusing on the Milky Way thin disk, thick disk, and stellar halo. We aim…

Earth and Planetary Astrophysics · Physics 2024-11-13 Christopher Boettner , Akshara Viswanathan , Pratika Dayal

We introduce a dual-wavelength Fourier ptychographic topography (FPT) method that extends the lambda/2 height-range limit of single-wavelength FPT. By reconstructing complex fields at two illumination wavelengths and exploiting their phase…

Co-rotating spots at different latitudes on the stellar surface generate periodic photometric variability and can be useful proxies to detect Differential Rotation (DR). DR is a major ingredient of the solar dynamo but observations of…

Solar and Stellar Astrophysics · Physics 2015-06-16 Timo Reinhold , Ansgar Reiners