Results 1 to 10 of about 1,219 (138)

Determination of oscillation frequencies and stellar properties of three Delta Scuti variable stars using Kepler data

open access: yesJournal of the National Science Foundation of Sri Lanka, 2020
Asteroseismology is the science that deals with the oscillations in the stars with the goal of understanding the stellar structure. In this study, photometric data of Kepler mission have been used for the asteroseismic study of Delta Scuti type pulsating stars. The light curve analysis of three Delta Scuti stars observed by Kepler mission is presented.
J. Adassuriya   +3 more
openaire   +2 more sources

USING CONSUMER-GRADE DSLR CAMERA AND SMALL TELESCOPE TO FIND NEW VARIABLE STARS

open access: yesOdessa 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
doaj   +1 more source

The GFCAT: A Catalog of Ultraviolet Variables Observed by GALEX with Subminute Resolution

open access: yesThe 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
doaj   +1 more source

MOSTsatellite photometry of stars in the M67 field: eclipsing binaries, blue stragglers and δ Scuti variables [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
accepted to MNRAS, 2008 August ...
Theodor Pribulla   +10 more
openaire   +2 more sources

Pulsation of EE Cam

open access: yes, 2007
EE Cam is a previously little studied Delta Scuti pulsator with amplitudes between those of the HADS (High-Amplitude Delta Scuti stars) group and the average low-amplitude pulsators.
Breger M.   +5 more
core   +1 more source

The Transit Signal of KOI-1755 Originates from a Background Eclipsing Binary Star—Extracting the Light Curve of a Faint Background Star from Kepler Target Pixel File Data

open access: yesThe Astronomical Journal
KOI-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
doaj   +1 more source

Dealing With δ-Scuti Variables: Transit Light Curve Analysis of Planets Orbiting Rapidly Rotating, Seismically Active A/F Stars [PDF]

open access: yesThe Astronomical Journal, 2019
Abstract We measure the bulk system parameters of the seismically active, rapidly rotating δ-Scuti KOI-976 and constrain the orbit geometry of its transiting binary companion using a combined approach of asteroseismology and gravity-darkening light curve analysis. KOI-976 is a 1.62 ± 0.2 M ⊙ star with a measured v sin(i)
John P. Ahlers   +2 more
openaire   +2 more sources

Eight Phase-step δ Scuti Variables in TESS Data

open access: yesThe Astronomical Journal
Analysis of the previously classified delta Scuti variable star MW Camelopardalis using data from the Transiting Exoplanet Survey Satellite sparked a deeper inquiry due to unexpected patterns within the target’s observed − calculated ( O − C ) diagram ...
Saragrace Felvus-Richmond, Eric G. Hintz
doaj   +1 more source

A magnetic study of the δ Scuti variable HD 21190 and the close solar-type background star CPD −83°64B [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
HD 21190 is a known $\delta$ Scuti star showing Ap star characteristics and a variability period of 3.6 h discovered by the Hipparcos mission. Using Gaia DR1 data for an astrometric analysis, it was recently suggested that HD 21190 forms a physical binary system with the companion CPD -83$^{\circ}$ 64B.
S P Järvinen   +5 more
openaire   +2 more sources

Joint Long-baseline Study Based on WASP, Kepler, and TESS: Revealing the Pulsation Characteristics of δ Scuti Star KIC 8712760

open access: yesThe Astrophysical Journal
We report a significant nonperiodic amplitude modulation in the δ Scuti star KIC 8712760. In this study, we conduct a long-term, multimission analysis of KIC 8712760, using uniformly processed light curves from the Wide Angle Search for Planets (WASP ...
Jianwei Yao   +8 more
doaj   +1 more source

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