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The CoRoT field LRa02 has been observed with the Berlin Exoplanet Search Telescope II (BEST II) during the southern summer 2007/2008. A first analysis of stellar variability led to the publication of 345 newly discovered variable stars.…

Instrumentation and Methods for Astrophysics · Physics 2012-05-11 T. Fruth , P. Kabath , J. Cabrera , R. Chini , Sz. Csizmadia , P. Eigmüller , A. Erikson , S. Kirste , R. Lemke , M. Murphy , T. Pasternacki , H. Rauer , R. Titz-Weider

High-quality time series provided by space instrumentation such as CoRoT and Kepler, allow us to measure modulations in the light curves due to changes in the surface of stars related to rotation and activity. Therefore, we are able to…

Solar and Stellar Astrophysics · Physics 2013-07-17 R. A. Garcia , T. Ceillier , S. Mathur , D. Salabert

The CoRoT (COnvection, internal ROtation and Transiting planets) space mission was launched in the last days of 2006, becoming the first major space mission dedicated to the search for and study of exoplanets, as well as doing the same for…

Earth and Planetary Astrophysics · Physics 2019-05-01 Magali Deleuil , Malcolm Fridlund

In this research, 14 light curves of 10 hot Jupiter exoplanets available on Exoplanet Transit Database (ETD) were analyzed. We extracted the transit parameters using EXOFAST software. Finally, we compared the planet's radius parameter…

Earth and Planetary Astrophysics · Physics 2020-06-14 F. Davoudi , A. Poro , E. Paki , P. Mirshafie , F. Ahangarani , A. Farahani , M. Roshana , F. Abolhasani , Sh. Zamanpour , E. Lashgari , S. Modarres , A. Mohandes

We present the DONUTS autoguiding algorithm, designed to fix stellar positions at the sub-pixel level for high-cadence time-series photometry, which is also capable of autoguiding on defocused stars. DONUTS was designed to calculate guide…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 J. McCormac , D. Pollacco , I. Skillen , F. Faedi , I. Todd , C. A. Watson

Change point detection (CPD) aims to locate abrupt property changes in time series data. Recent CPD methods demonstrated the potential of using deep learning techniques, but often lack the ability to identify more subtle changes in the…

Machine Learning · Computer Science 2021-07-21 Tim De Ryck , Maarten De Vos , Alexander Bertrand

Commute Time Distance (CTD) is a random walk based metric on graphs. CTD has found widespread applications in many domains including personalized search, collaborative filtering and making search engines robust against manipulation. Our…

Artificial Intelligence · Computer Science 2011-07-28 Nguyen Lu Dang Khoa , Sanjay Chawla

In this paper, we consider subaperture-based approaches for the digital aberration correction (DAC) of optical coherence tomography (OCT) images. In particular, we introduce a mathematical framework for describing this class of approaches,…

Following the widespread practice of exoplanetary transit simulations, various presumed components of an extrasolar system can be examined in numerically simulated transits, including exomoons, rings around planets, and the deformation of…

Earth and Planetary Astrophysics · Physics 2024-05-24 Szilárd Kálmán , Gyula M. Szabó , Csaba Kiss

Road curbs are considered as one of the crucial and ubiquitous traffic features, which are essential for ensuring the safety of autonomous vehicles. Current methods for detecting curbs primarily rely on camera imagery or LiDAR point clouds.…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Fulong Ma , Peng Hou , Yuxuan Liu , Yang Liu , Ming Liu , Jun Ma

The principal component analysis (PCA) is widely used for data decorrelation and dimensionality reduction. However, the use of PCA may be impractical in real-time applications, or in situations were energy and computing constraints are…

Image and Video Processing · Electrical Eng. & Systems 2024-01-31 R. S. Oliveira , R. J. Cintra , F. M. Bayer , T. L. T. da Silveira , A. Madanayake , A. Leite

The CoRoT satellite has provided high-precision photometric light curves for more than 163,000 stars and found several hundreds of transiting systems compatible with a planetary scenario. If ground-based velocimetric observations are the…

We report on observations of the CoRoT IR01 field with the Berlin Exoplanet Search Telescope (BEST). BEST is a small aperture telescope with a wide field of view (FOV). It is dedicated to search for variable stars within the target fields…

Solar and Stellar Astrophysics · Physics 2009-07-29 P. Kabath , P. Eigmüller , A. Erikson , P. Hedelt , H. Rauer , R. Titz , T. Wiese

Up to now, planet search programs have concentrated on main sequence stars later than spectral type F5. However, identifying planets of early type stars would be interesting. For example, the mass loss of planets orbiting early and late…

Earth and Planetary Astrophysics · Physics 2010-10-14 Daniel Sebastian , Eike W. Guenther

Stellar activity, such as starspots, can induce radial velocity (RV) variations that can mask or even mimic the RV signature of orbiting exoplanets. For this reason RV exoplanet surveys have been unsuccessful when searching for planets…

Earth and Planetary Astrophysics · Physics 2015-06-12 V. E. Moulds , C. A. Watson , X. Bonfils , S. P. Littlefair , E. K. Simpson

Of the over 450 exoplanets known to date, more than 420 of them have been discovered using radial velocity studies, a method that tells nothing about the inclination of the planet's orbit. Because it is more likely that the companion is a…

The present work deals with the detection of phase changes in an exoplanetary system. HD 46375 is a solar analog known to host a non-transiting Saturn-mass exoplanet with a 3.0236 day period. It was observed by the CoRoT satellite for 34…

In this paper, we developed the solution of roadside LiDAR object detection using a combination of two unsupervised learning algorithms. The 3D point clouds are firstly converted into spherical coordinates and filled into the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Tianya Zhang , Peter J. Jin

For exoplanet direct detection mission concepts such as Terrestrial Planet Finder or Exoplanet Probe, light from the exozodiacal dust tends to obscure any exoplanets present in the image. Data analysis methods to identify point sources…

Instrumentation and Methods for Astrophysics · Physics 2010-12-07 Charley Noecker , Marc Kuchner

Anomaly detection in temporal data from sensors under aviation scenarios is a practical but challenging task: 1) long temporal data is difficult to extract contextual information with temporal correlation; 2) the anomalous data are rare in…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Hao Yang , Junyu Gao , Yuan Yuan , Xuelong Li
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