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In this work, six convolutional neural networks (CNNs) have been trained based on %different feature images and arrays from the database including 15,638 superflare candidates on solar-type stars, which are collected from the three-years…

太阳与恒星天体物理 · 物理学 2022-09-19 Zuo-Lin Tu , Qin Wu , Wenbo Wang , G. Q. Zhang , Zi-Ke Liu , F. Y. Wang

Space-based missions such as TESS are identifying a wealth of short-period ($\lesssim30$ d) transiting planets. Despite the growing number of confirmed and candidate planets, the sample is still incomplete and highly biased, challenging…

地球与行星天体物理 · 物理学 2026-04-27 M. Lafarga , D. J. Armstrong , K. Cui , A. Hadjigeorghiou , V. Kunovac , L. Doyle , E. M. Bryant , R. F. Díaz , L. A. Nieto , A. Osborn

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,…

地球与行星天体物理 · 物理学 2025-11-25 Suman Saha

The Kepler Mission was designed to identify and characterize transiting planets in the Kepler Field of View and to determine their occurrence rates. Emphasis was placed on identification of Earth-size planets orbiting in the Habitable Zone…

In this paper, we study stellar light curves from the TESS satellite (Transiting Exoplanet Survey Satellite) for the presence of stellar flares. The main aim is to detect stellar flares using two-minutes cadence data and to perform…

太阳与恒星天体物理 · 物理学 2022-08-31 Małgorzata Pietras , Robert Falewicz , Marek Siarkowski , Kamil Bicz , Paweł Preś

We developed, tested and validated a new Fast, Robust and Automated (FRA) tool to detect solar-like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power $\nu_{max}$, without relying on…

太阳与恒星天体物理 · 物理学 2023-06-27 C. Gehan , T. L. Campante , M. S. Cunha , F. Pereira

We present a systematic phase curve analysis of known transiting systems observed by the Transiting Exoplanet Survey Satellite (TESS) during year one of the primary mission. Using theoretical predictions for the amplitude of the planetary…

The Transiting Exoplanet Survey Satellite (TESS) has a goal of detecting small planets orbiting stars bright enough for mass determination via ground-based radial velocity observations. Here we present estimates of how many exoplanets the…

地球与行星天体物理 · 物理学 2018-10-31 Thomas Barclay , Joshua Pepper , Elisa V. Quintana

We present a magnitude-limited set of lightcurves for stars observed over the TESS Extended Mission, as extracted from full-frame images (FFIs) by MIT's Quick-Look Pipeline (QLP). QLP uses multi-aperture photometry to produce lightcurves…

We consider the potential for the Transiting Exoplanet Survey Satellite (TESS) to detect transit timing variations (TTVs) during both its nominal and extended mission phases. Building on previous estimates of the overall yield of planetary…

地球与行星天体物理 · 物理学 2019-10-02 Sam Hadden , Thomas Barclay , Matthew J. Payne , Matthew J. Holman

The variability of fast-rotating Oe/Be stars has been reported in detail in recent years. However, much less known about the behaviour of fast-rotating OB stars without known decretion disks, and hence it is difficult to identify the…

太阳与恒星天体物理 · 物理学 2024-07-12 Yael Naze , Nikolay Britavskiy , Jonathan Labadie-Bartz

The Transiting Exoplanet Survey Satellite (TESS) is providing precise time-series photometry for most star clusters in the solar neighborhood. Using the TESS images, we have begun a Cluster Difference Imaging Photometric Survey (CDIPS), in…

太阳与恒星天体物理 · 物理学 2019-11-25 L. G. Bouma , J. D. Hartman , W. Bhatti , J. N. Winn , G. Á. Bakos

The ESA space mission Ariel requires bright sources that are stable at the level of 100ppm over 6 hours in order to accurately measure exoplanet atmospheres through transmission spectroscopy. To ensure this, in-flight instrument calibration…

天体物理仪器与方法 · 物理学 2026-02-27 Elena Tonucci , Tim van Kempen , Jean-Philippe Beaulieu , Lilou Bernard

The slowly pulsating B (SPB) stars are a class of variable star with masses between about 3 and 8 M$_{\odot}$. Their gravity-mode pulsation frequencies are sensitive to the near-core structure, which makes them useful probes of rotation and…

太阳与恒星天体物理 · 物理学 2025-12-08 L. J. A. Scott , D. M. Bowman

The Transiting Exoplanet Survey Satellite (TESS) is focusing on relatively bright stars and has found thousands of planet candidates. However, mainly because of the low spatial resolution of its cameras ($\approx$ 21 arcsec/pixel), TESS is…

As the NASA Transiting Exoplanet Survey Satellite (TESS) fulfills its primary mission, it is executing an unprecedented survey of almost the entire sky: TESS's approved extended mission will likely extend sky coverage to ~94%, including…

地球与行星天体物理 · 物理学 2019-11-12 Matthew J Payne , Matthew J Holman , András Pál

With the availability of large-scale surveys like Kepler and TESS, there is a pressing need for automated methods to classify light curves according to known classes of variable stars. We introduce a new algorithm for classifying light…

太阳与恒星天体物理 · 物理学 2022-06-30 Nicholas H. Barbara , Timothy R. Bedding , Ben D. Fulcher , Simon J. Murphy , Timothy Van Reeth

Transiting exoplanets in multi-planet systems have non-Keplerian orbits which can cause the times and durations of transits to vary. The theory and observations of transit timing variations (TTV) and transit duration variations (TDV) are…

地球与行星天体物理 · 物理学 2025-05-01 Eric Agol , Daniel Fabrycky

For ongoing studies of the role of rotation in stellar evolution, we require large catalogs of rotation periods for testing and refining gyrochronology. While there is a wealth of data from the Kepler and K2 missions, TESS presents both an…

太阳与恒星天体物理 · 物理学 2024-02-26 Isabel L. Colman , Ruth Angus , Trevor David , Jason Curtis , Soichiro Hattori , Yuxi Lucy Lu

NASA's Transiting Exoplanet Survey Satellite (TESS) has begun a two-year survey of most of the sky, which will include lightcurves for thousands of solar-like oscillators sampled at a cadence of two minutes. To prepare for this steady…

太阳与恒星天体物理 · 物理学 2018-12-26 Warrick H. Ball , William J. Chaplin , Mathew Schofield , Andrea Miglio , Diego Bossini , Guy R. Davies , Léo Girardi