Results 21 to 30 of about 1,219 (138)

Amplitude variability or close frequencies in pulsating stars -- the   Scuti star FG Vir [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2006
10 pages, 6 figures.
Breger, Michel, Pamiatnych, Aleksiej
openaire   +3 more sources

KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum

open access: yesThe Astrophysical Journal, 2023
In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone f _1 = 17.597 day ^−1 as the dominant frequency, the non-radial
Xiao-Ya Sun   +3 more
doaj   +1 more source

V 1162 Ori: A multiperiodic delta Scuti star with variable period and amplitude [PDF]

open access: yesAstronomy & Astrophysics, 2001
We present the results of multisite observations of the delta Scuti star V1162 Ori. The observations were done in the period October 1999 - May 2000, when 18 telescopes at 15 observatories were used to collect 253 light extrema during a total of 290 hours of time-series observations.
Arentoft, T   +24 more
openaire   +4 more sources

A Rapidly Evolving High-amplitude δ Scuti Star Crossing the Hertzsprung Gap

open access: yesThe Astrophysical Journal Letters, 2022
In this work, we report the discovery of the rapidly evolving high-amplitude δ Scuti star KIC 6382916 (J19480292+4146558), which is crossing the Hertzsprung gap.
Jia-Shu Niu, Hui-Fang Xue
doaj   +1 more source

Amplitude Variability of Delta Scuti Stars: 4 CVn [PDF]

open access: yesInternational Astronomical Union Colloquium, 2000
AbstractThe amplitude variability of δ Scuti stars is demonstrated by the behavior of the evolved δ Scuti star 4 CVn. The data on 4 CVn covering over 30 yr shows the amplitudes of almost all modes to be extremely variable with a time scales of ten years or longer.
openaire   +1 more source

Kepler observations of A-F pre-main sequence stars in Upper Scorpius: Discovery of six new $\delta$~Scuti and one $\gamma$~Doradus stars [PDF]

open access: yes, 2015
We present light curves and periodograms for 27 stars in the young Upper Scorpius association (age=$11 \pm 1$\,Myr) obtained with the Kepler spacecraft. This association is only the second stellar grouping to host several pulsating pre-main sequence (PMS)
Balona, L.   +5 more
core   +2 more sources

Rotation of stars in NGC 6134 [PDF]

open access: yesAstronomy & Astrophysics, 2002
12 pages, 7 ...
Rasmussen, M.B.   +4 more
openaire   +4 more sources

The NMSU 1 m Telescope at Apache Point Observatory

open access: yesAdvances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We describe the New Mexico State University (NMSU) 1 m telescope located at the Apache Point Observatory (APO), and in particular, its robotic mode of operation. Some of the issues we have encountered may be of interest to others developing similar facilities.
Jon A. Holtzman   +3 more
wiley   +1 more source

T35: A Small Automatic Telescope for Long‐Term Observing Campaigns

open access: yesAdvances in Astronomy, Volume 2010, Issue 1, 2010., 2010
The T35 is a small telescope (14″) equipped with a large format CCD camera installed in the Sierra Nevada Observatory (SNO) in Southern Spain. This telescope will be a useful tool for the detecting and the studying of pulsating stars, particularly, in open clusters.
Susana Martín-Ruiz   +11 more
wiley   +1 more source

Equidistant frequency triplets in pulsating stars: The Combination Mode Hypothesis [PDF]

open access: yes, 2006
Multiplet structures are a common feature in pulsating stars, and can be the consequence of rotational splitting, mode interaction or sinusoidal amplitude variations.
Breger, M., Kolenberg, K.
core   +3 more sources

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