Results 41 to 50 of about 1,216 (137)
Asteroseismology Applied to Constrain Structure Parameters of δ Scuti Stars
The Astrophysical JournalAsteroseismology is a powerful tool to probe stellar structure. Spaceborne instruments like CoRoT, Kepler, and TESS have observed the oscillations of numerous stars, among which δ Scutis are particularly interesting, owing to their fast rotation and ...
Subrata Kumar Panda +4 more
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The GFCAT: A Catalog of Ultraviolet Variables Observed by GALEX with Subminute Resolution
The Astrophysical Journal Supplement Series, 2023 We have performed the first systematic search of the full Galaxy Evolution Explorer (GALEX) data archive for astrophysical variability on timescales of seconds to minutes by rebinning data across the whole mission to 30 s time resolution.
Chase C. Million +4 more
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, 2018 We develop a technique for removing stellar variability in the light curves of $\delta$-Scuti and similar stars. Our technique, which we name the Linear Algorithm for Significance Reduction (LASR), subtracts oscillations from a time series by minimizing ...
Ahlers, John P. +4 more
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Quadratic Frequency Dispersion in the Oscillations of Intermediate-mass Stars
The Astrophysical Journal LettersAsteroseismology, the study of stellar vibration, has met with great success, shedding light on stellar interior structure, rotation, and magnetism. Prominently known as δ Scutis, the intermediate-mass main-sequence oscillators that often exhibit rapid ...
Subrata Kumar Panda +3 more
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An observer's view on the future of asteroseismology [PDF]
, 2019 Scientific research is a continuous process, and the speed of future progress can be estimated by the pace of finding explanations for previous research questions.
Paparó, Margit
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Seismic Constraints on the Spin Evolution of Slowly Rotating Young Intermediate-mass Stars
The Astrophysical Journalδ Scuti stars are hot, rapid rotators and a poorly understood class of pulsators. Asteroseismology provides the only means with which to probe their interior dynamics.
Kunal H. Singh +3 more
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Variable stars in the Open Cluster M11 (NGC 6705)
, 2007 V-band time-series CCD photometric observations of the intermediate-age open cluster M11 were performed to search for variable stars. Using these time-series data, we carefully examined light variations of all stars in the observing field.
Breger M. +17 more
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Deformation and Differential Rotation in Slowly Rotating Young Intermediate-mass Stars
The Astrophysical JournalAsteroseismology, the study of stellar vibrations, is a method that can probe the structure deformation and internal rotation of stars. Salient among the seismic inferences of rotation from TESS observations are TIC 408165734, whose equatorial rotation ...
Subrata Kumar Panda, Shravan Hanasoge
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KIC 10855535: An Elegant δ Scuti Pulsator with Amplitude and Phase Modulation
The Astrophysical JournalWe investigated the pulsating behavior of KIC 10855535 using Kepler 4 yr long-cadence data. Two independent frequencies were detected: a pulsation frequency F0 = 17.733260(5) day ^−1 and a low frequency f _8 = 0.412643(8) day ^−1 .
Li-xian Shen +8 more
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USING CONSUMER-GRADE DSLR CAMERA AND SMALL TELESCOPE TO FIND NEW VARIABLE STARS
Odessa Astronomical Publications, 2019 Twenty-seven new variable stars were found in DSLR images captured from October 2017 to June 2019. All images were taken using unmod- i?ed Canon EOS 600D DSLR attached to a Sky- watcher 150/750 Newtonian on a motorized equato- rial mount.
M. Yu. Pyatnytskyy
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