The OGLE Collection of Variable Stars. Over 2600 Delta Scuti Stars in the Small Magellanic Cloud [PDF]
Acta Astronomica, 2022 BEFORE_PUBLICATION
Soszyński, Igor +13 more
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TIC 5724661: A Long-period Binary with a Pulsating sdB Star and δ Scuti Variable [PDF]
The Astrophysical Journal, 2022 Abstract Using TESS 20 s cadence data, we have discovered an unusual combination of pulsating stars in what we infer to be a binary system. The binary consists of a standard δ Scuti star with pulsations over the range 32–41 day−1; this is in a likely wide orbit with a hot subdwarf-B (sdB) star, which itself has a large-amplitude p-mode ...
Rahul Jayaraman +10 more
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The OGLE Collection of Variable Stars. Over 15 000 Delta Scuti Stars in the Large Magellanic Cloud [PDF]
Acta Astronomica, 2023 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. In the case of 12 delta Sct pulsators, we detected additional eclipsing or ellipsoidal variations in their light ...
Soszyński, I. +14 more
openaire +3 more sources
Multisite Observations of δ Scuti Stars 7 Aql and 8 Aql (a New δ Scuti Variable): The Twelfth STEPHI Campaign in 2003 [PDF]
The Astronomical Journal, 2007 We present an analysis of the pulsation behaviour of the Delta Scuti stars 7 Aql (HD 174532) and 8 Aql (HD 174589) -- a new variable star -- observed in the framework of STEPHI XII campaign during 2003 June--July. 183 hours of high precision photometry were acquired by using four-channel photometers at three sites on three continents during 21 days ...
Fox Machado, L. +14 more
openaire +7 more sources
Rotation of stars in NGC 6134 [PDF]
Astronomy & Astrophysics, 2002 12 pages, 7 ...
Rasmussen, M.B. +4 more
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Validating Gaia DR3 Pulsating Variable Classifications with TESS: Building Reliable δ Scuti and γ Doradus Stars Catalogs (In Progress)* [PDF]
Research Notes of the AASAbstract Gaia DR3 revealed 748,058 pulsating variable stars of mixed DSCT∣GDOR∣SXPHE types. This project undertakes a comprehensive examination to validate and distinguish these stars using Transiting Exoplanet Survey Satellite data. Aiming for reliable catalogs of bona fide δ Scuti and γ Doradus stars, I have validated 1715 δ Scuti ...
Zhou, Ai-Ying
openaire +3 more sources
Variable Blue Straggler Stars in the Open Cluster NGC 6819 Observed in the Kepler “Superstamp” Field [PDF]
The Astronomical Journal, 2023 NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft’s field of view from 2009 to 2013. The central part of the cluster was observed in a 200 × 200 pixel “superstamp” during these four years in 30 minute cadence photometry ...
Joyce A. Guzik +6 more
doaj +3 more sources
Position and Time Determination Without Prior State Knowledge via Onboard Optical Observations of Delta Scuti Variable Stars [PDF]
The Journal of the Astronautical SciencesWe present a navigation concept for solving the lost in space and time problem using optical observations of $δ$ Scuti variable stars. Only a small number of techniques exist that allow a spacecraft to recover from being lost in both space and time, which can be caused by a failure of the onboard clock and navigation systems. Optical observations of $δ$
Linyi Hou +3 more
openaire +3 more sources
Analysis of pulsating variable stars using the visibility graph algorithm. [PDF]
PLoS One, 2021 We study the light curves of pulsating variable stars using a complex network approach to build visibility graphs. We consider various types of variables stars (e.g., Cepheids, delta Scuti, RR Lyrae), build two types of graphs (the normal visibility ...
Muñoz V, Garcés NE.
europepmc +3 more sources
A New Catalog of 100,000 Variable \emph{TESS} A-F Stars Reveals a Correlation Between $δ$ Scuti Pulsator Fraction and Stellar Rotation [PDF]
δ Scuti variables are found at the intersection of the classical instability strip and the main sequence on the Hertzsprung-Russell diagram. With space-based photometry providing millions of light-curves of A-F type stars, we can now probe the occurrence rate of δ Scuti pulsations in detail.
Gootkin, Keyan +5 more
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