Results 71 to 80 of about 1,216 (137)

Period–Luminosity Relations for Double-mode δ Sct Stars

open access: yesThe Astrophysical Journal
Previous studies of the period–luminosity relations (PLRs) of Delta Scuti ( δ Sct) stars have focused on those with a single pulsation mode. However, for δ Sct stars with many different pulsation modes, classifying a single mode is difficult.
Qi Jia   +5 more
doaj   +1 more source

The Identification of RR Lyrae and Delta Scuti Stars from Variable GALEX Ultraviolet Sources

open access: yes, 2014
We identify the RR Lyrae and delta Scuti (DSCT) stars in three catalogs of GALEX variable sources. The NUV amplitude of RR Lyrae stars is about twice that in V-band, so we find a larger percentage of low amplitude variables than catalogs such as Abbas et al (2014).
Kinman, T. D., Brown, Warren R.
openaire   +2 more sources

Asteroseismology and Dynamics Reveal Interior Structure and Coeval Evolution in the Triply Post-main-sequence System DG Leo

open access: yesThe Astrophysical Journal
δ Scuti stars in binary or multiple systems serve as crucial probes for studying stellar pulsation and evolution. However, many such systems are not ideal for asteroseismology due to uncertainties in mass transfer with close companions and the challenges
Ping Li   +6 more
doaj   +1 more source

Amplitude Variability in gamma Dor and delta Scuti stars observed by the Kepler Spacecraft

open access: yes, 2016
Proceedings of IAU Focus Meeting 17, Advances in Stellar Physics from Asteroseismology, XXIXth IAU General Assembly, Honolulu, Hawaii, August 2015. Focus meeting proceedings edited by C.S. Jeffery, J.A.
Guzik, Joyce A.   +3 more
openaire   +2 more sources

Pulsating and Nonpulsating Components of Detached Eclipsing Binaries in the δ Scuti Instability Strip

open access: yesThe Astronomical Journal
Pulsating detached eclipsing binary systems are crucial for studying the internal structure of oscillating stars. These systems are advantageous because binary effects on pulsations are minimal, allowing for more accurate determinations of fundamental ...
Filiz Kahraman Aliçavuş   +5 more
doaj   +1 more source

Discovery of 79 δ Scuti Stars in NGC 3532 Suggests a Decrease of Pulsator Occurrence with Age

open access: yesThe Astrophysical Journal
Many A–F type stars do not display δ Scuti pulsations, despite being located within the instability strip. Open clusters provide a unique opportunity to study δ Scuti pulsations among coeval populations with uniform chemical composition. Here we use data
Ian Berry   +5 more
doaj   +1 more source

KIC 5623923: A Faint Eclipsing Binary Consisting of δ Scuti Pulsations

open access: yesThe Astrophysical Journal
In this paper, we present a detailed analysis of the light variation of KIC 5623923 using high-precision time-series data from the Kepler mission. The analysis reveals this target is an eclipsing binary system with δ Scuti-type pulsations from the ...
Tao-Zhi Yang   +6 more
doaj   +1 more source

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. VI. Delta Scuti Stars in the Large Magellanic Cloud

open access: yes, 2010
The sixth part of the OGLE-III catalog of Variable Stars presents Sct pulsators in the Large Magellanic Cloud. Altogether 2786 variable stars were found and amongst them 92 are multi-mode objects, including 67 stars pulsating in the fundamental mode and the first overtone (F/1O), nine double-mode pulsators with various combinations of the first three
Poleski, R.   +8 more
openaire   +7 more sources

KIC 8840638: A Newly Discovered Eclipsing Binary with δ Scuti–Type Oscillations

open access: yesThe Astrophysical Journal
In this paper, we analyze the light variation of KIC 8840638 using high-precision time-series data from the Kepler mission. The analysis reveals that this target is a new detached eclipsing binary system with a δ Scuti component, rather than a single δ ...
Tao-Zhi Yang   +6 more
doaj   +1 more source

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