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Related papers: The EPOCH Project: I. Periodic variable stars in t…

200 papers

The stellar evolution theory of massive stars remains uncalibrated with high-precision photometric observational data mainly due to a small number of luminous stars that are monitored from space. Automated all-sky surveys have revealed…

Solar and Stellar Astrophysics · Physics 2017-02-08 Jaan Laur , Indrek Kolka , Tõnis Eenmäe , Taavi Tuvikene , Laurits Leedjärv

We have created a catalogue of variable stars found from a search of the publicly available K2 mission data from Campaigns 1 and 0. This catalogue provides the identifiers of 8395 variable stars, including 199 candidate eclipsing binaries…

Solar and Stellar Astrophysics · Physics 2015-06-29 D. J. Armstrong , J. Kirk , K. W. F. Lam , J. McCormac , S. R. Walker , D. J. A. Brown , H. P. Osborn , D. L. Pollacco , J. Spake

We are entering an era of unprecedented quantities of data from current and planned survey telescopes. To maximise the potential of such surveys, automated data analysis techniques are required. Here we implement a new methodology for…

We present the OGLE collection of delta Scuti stars in the Large Magellanic Cloud and in its foreground. Our dataset encompasses a total of 15 256 objects, constituting the largest sample of extragalactic delta Sct stars published so far.…

Based on high-resolution near-infrared photometric data from the James Webb Space Telescope (JWST) targeting the Large Magellanic Cloud (LMC), this study attempts to evaluate the feasibility and sensitivity limits of variable star detection…

Solar and Stellar Astrophysics · Physics 2025-06-30 Jiyu Wang , Xiaodian Chen , Jianxing Zhang , Ziming Yan , Shu Wang , Licai Deng

In this paper, we report the detections of stellar variabilities from the first 2-year observations of sky area of about 1300 square degrees from the Tsinghua University-NAOC Transient Survey (TNTS). A total of 1237 variable stars…

Solar and Stellar Astrophysics · Physics 2015-09-23 Xinyu Yao , Lingzhi Wang , Xiaofeng Wang , Tianmeng Zhang , Juncheng Chen , Wenlong Yuan , Jun Mo , Wenxiong Li , Zhiping Jin , Xuefeng Wu , JunDan Nie , Xu Zhou

RV variable stars are important in astrophysics. The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic survey has provided ~ 6.5 million stellar spectra in its Data Release 4 (DR4). During the survey, ~ 4.7…

The period-change rate (PCR) of pulsating variable stars is a useful probe of changes in their interior structure, and thus of their evolutionary stages. So far, the PCRs of Classical Cepheids in the Large Magellanic Cloud (LMC) have been…

We initiated digitization of the Moscow collection of astronomical plates using flatbed scanners. Techniques of photographic photometry of the digital images were applied, enabling an effective search for new variable stars. Our search for…

Astrophysics · Physics 2008-10-08 D. M. Kolesnikova , L. A. Sat , K. V. Sokolovsky , S. V. Antipin , N. N. Samus

We extend the work developed in previous papers on microlensing with a selection of variable stars. We use the Pixel Method to select variable stars on a set of 2.5 x 10**6 pixel light curves in the LMC Bar presented elsewhere. The previous…

Astrophysics · Physics 2009-11-06 A. -L. Melchior , S. M. G. Hughes , J. Guibert

We present a new catalogue of variable stars compiled from data taken for the University of New South Wales Extrasolar Planet Search. From 2004 October to 2007 May, 25 target fields were each observed for 1-4 months, resulting in ~87000…

In this project we use data obtained by Zwicky Transient Facility to develop and test a neural-network-based, multiband classification algorithm to classify periodic variable stars (i.e. pulsating variable stars and eclipsing binaries). The…

Instrumentation and Methods for Astrophysics · Physics 2026-02-25 Tamás Szklenár , Attila Bódi , Róbert Szabó

We report the discovery of 73 double-mode RR Lyrae (RRd) stars in fields near the bar of the LMC. The stars are detected among the MACHO database of short-period variables that currently contains about 7900 RR Lyrae stars. Fundamental…

In this experiment, we created a Multiple-Input Neural Network, consisting of Convolutional and Multi-layer Neural Networks. With this setup the selected highest-performing neural network was able to distinguish variable stars based on the…

Solar and Stellar Astrophysics · Physics 2022-10-26 T. Szklenár , A. Bódi , D. Tarczay-Nehéz , K. Vida , Gy. Mező , R. Szabó

Periodic variables are always of great scientific interest in astrophysics. Thanks to the rapid advancement of modern large-scale time-domain surveys, the number of reported variable stars has experienced substantial growth for several…

The COROT space mission will monitor several target fields for up to 150 days to perform asteroseismology and to search for extrasolar planets by photometric transits. Variable stars in the target fields are important objects for additional…

Solar and Stellar Astrophysics · Physics 2009-09-29 C. Karoff , H. Rauer , A. Erikson , H. Voss , P. Kabath , T. Wiese , M. Deleuil , C. Moutou , J. C. Meunier , H. Deeg

We present results of star variability analysis in OGLE II first bulge field. Photometric database was derived by means of image subtraction method (Wozniak 2000) and contains 4597 objects pre-classified as variables. We analyzed all the…

Astrophysics · Physics 2007-05-23 Tomasz Mizerski , Michal Bejger

The Asteroid Terrestrial-impact Last Alert System (ATLAS) carries out its primary planetary defense mission by surveying about 13000 deg^2 at least four times per night. The resulting data set is useful for the discovery of variable stars…

A complete periodic star extraction and classification scheme is set up and tested with the Hipparcos catalogue. The efficiency of each step is derived by comparing the results with prior knowledge coming from the catalogue or from the…