Results 1 to 10 of about 2,888,460 (154)
Asteroseismology Applied to Constrain Structure Parameters of δ Scuti Stars [PDF]
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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Variable Blue Straggler Stars in the Open Cluster NGC 6819 Observed in the Kepler “Superstamp” Field
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
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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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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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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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The Astrophysical Journal Letters, 2023 The detection of long-period binary stars containing a δ Scuti variable is helpful to study the formation and evolution of binaries in the intermediate-mass region.
Xin Lyu, Ming Yang
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The Astrophysical JournalEclipsing Algol-type systems containing a δ Scuti (hereafter δ Sct) star enable precise determination of physical parameters and the investigation of stellar internal structure and evolution.
Qi-Huan Zeng +5 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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The Astronomical JournalKOI-1755 (KIC 5302006) was initially identified by the Kepler mission as a candidate exoplanet host but subsequently classified as a false positive due to suspected background contamination.
Haozhi Wang +8 more
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