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Light curves and periodograms of 160 B stars observed by the TESS space mission and 29 main-sequence B stars from Kepler and K2 were used to classify the variability type. There are 114 main-sequence B stars in the TESS sample, of which 45…

Solar and Stellar Astrophysics · Physics 2019-03-06 L. A. Balona , G. Handler , S. Chowdhury , D. Ozuyar , C. A. Engelbrecht , G. M. Mirouh , G. A. Wade , A. David-Uraz , M. Cantiello

A recent analysis of high precision photometry obtained using the Kepler spacecraft has revealed two surprising discoveries: (1) over 860 main sequence A-type stars -- approximately 40% of those identified in the Kepler field -- exhibit…

Solar and Stellar Astrophysics · Physics 2017-12-11 James Sikora , Gregg A. Wade , Jason Rowe

Accurately and rapidly classifying exoplanet candidates from transit surveys is a goal of growing importance as the data rates from space-based survey missions increases. This is especially true for NASA's TESS mission which generates…

In the first three years of operation the Kepler mission found 3,697 planet candidates from a set of 18,406 transit-like features detected on over 200,000 distinct stars. Vetting candidate signals manually by inspecting light curves and…

The Zwicky Transient Facility (ZTF) has been observing the entire northern sky since the start of 2018 down to a magnitude of 20.5 ($5 \sigma$ for 30s exposure) in $g$, $r$, and $i$ filters. Over the course of two years, ZTF has obtained…

We introduce a new machine learning based technique to detect exoplanets using the transit method. Machine learning and deep learning techniques have proven to be broadly applicable in various scientific research areas. We aim to exploit…

Earth and Planetary Astrophysics · Physics 2022-01-05 Abhishek Malik , Benjamin P. Moster , Christian Obermeier

Differentiating between real transit events and false positive signals in photometric time series data is a bottleneck in the identification of transiting exoplanets, particularly long-period planets. This differentiation typically requires…

Earth and Planetary Astrophysics · Physics 2024-05-29 Valentina Tardugno Poleo , Nora Eisner , David W. Hogg

The TESS mission produces a large amount of time series data, only a small fraction of which contain detectable exoplanetary transit signals. Deep learning techniques such as neural networks have proved effective at differentiating…

One of the major challenges in astronomy involves accurately classifying galaxies, particularly distinguishing between different galaxy types. While many complex algorithms have shown strong performance in classification tasks, their…

Instrumentation and Methods for Astrophysics · Physics 2026-03-13 Sazatul Nadhilah Zakaria , Santtosh Muniyandy , John Y. H. Soo

Space-based transit missions such as Kepler and TESS have demonstrated that planets are ubiquitous. However, the success of these missions heavily depends on ground-based radial velocity (RV) surveys, which combined with transit photometry…

The analysis of non-variable stars is generally neglected in the literature. However, such objects are needed for many calibration processes and for testing pulsational models. The photometric time series of the Kepler satellite mission…

Stellar parameters for large samples of stars play a crucial role in constraining the nature of stars and stellar populations in the Galaxy. An increasing number of medium-band photometric surveys are presently used in estimating stellar…

The launch of NASA's Kepler space telescope in 2009 revolutionized the quality and quantity of observational data available for asteroseismic analysis. While Kepler was able to detect solar-like oscillations in hundreds of main-sequence and…

Solar and Stellar Astrophysics · Physics 2023-08-04 Travis S. Metcalfe , Richard H. D. Townsend , Warrick H. Ball

The recent NASA TESS mission has the potential to increase the available asteroseismic sample dramatically, but its precision and accuracy have yet to be confirmed. To date, NASA's Kepler mission has been considered the gold standard for…

Solar and Stellar Astrophysics · Physics 2023-07-27 Artemis Theano Theodoridis , Jamie Tayar

Research into light curves from stars (temporal variation of brightness) has completely changed how exoplanets are discovered or characterised. This study including star light curves from the Kepler dataset as a way to discover exoplanets…

Earth and Planetary Astrophysics · Physics 2025-06-24 Krishna Chamarthy

We develop a new and powerful method to analyze time series to rigorously detect flares in the presence of an irregularly oscillatory baseline, and apply it to stellar light curves observed with TESS. First, we remove the underlying…

Solar and Stellar Astrophysics · Physics 2025-12-23 Qiyuan Wang , Giovanni Motta , Genaro Sucarrat , Vinay L. Kashyap

The Kepler spacecraft is providing photometric time series with micro-magnitude precision for thousands of variable stars. The continuous time-series of unprecedented time span open up opportunities to study the pulsational variability in…

Solar and Stellar Astrophysics · Physics 2011-11-08 K. Uytterhoeven , KASC WG#10

Kepler has revolutionized the study of transiting planets with its unprecedented photometric precision on more than 150,000 target stars. Most of the transiting planet candidates detected by Kepler have been observed as long-cadence targets…

Earth and Planetary Astrophysics · Physics 2015-06-22 Ellen M. Price , Leslie A. Rogers

TESS is finding transiting planet candidates around bright, nearby stars across the entire sky. The large field-of-view, however, results in low spatial resolution, therefore multiple stars contribute to almost every TESS light curve.…

Earth and Planetary Astrophysics · Physics 2020-01-08 Carl Ziegler , Andrei Tokovinin , Cesar Briceno , James Mang , Nicholas Law , Andrew W. Mann

lightcurver is a photometric pipeline for time series astronomical imaging data, designed for the semi-automatic extraction of precise light curves from small, blended targets. Such targets include, but are not limited to, lensed quasars,…

Instrumentation and Methods for Astrophysics · Physics 2024-10-18 Frédéric Dux