Results 1 to 10 of about 354,490 (317)

New triple-mode high-amplitude Delta Scuti variables

open access: yesOpen Astronomy, 2022
I present a detection of four new triple-mode high-amplitude Delta Scuti variables, pulsating in the fundamental, first, and second overtone modes. This is a new addition to the ten known cases in the Galaxy.
Khruslov Anton V.
doaj   +1 more source

Most Rotational Variables Dominated by a Single Bright Feature Are α 2 CVn Stars

open access: yesThe Astronomical Journal, 2023
We previously reported a rare class of variable star light curves isolated from a sample of 4.7 million candidate variables from the ATLAS survey. Dubbed “UCBH” light curves, they have broad minima and narrow, symmetrical maxima, with typical periods of ...
A. N. Heinze   +2 more
doaj   +1 more source

Future of the General Catalogue of Variable Stars from the Experience of Recent Name-lists

open access: yesOpen Astronomy, 2021
We briefly outline the history of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variable Stars (NSV catalogue). Recently, we have completed a revision of the NSV catalogue.
Samus Nikolay N.   +5 more
doaj   +1 more source

NEW VARIABLE STAR IN THE ORION CONSTELLATION

open access: yesOdessa Astronomical Publications, 2017
New variable star with α = 05° 57m22s, δ = +20°15.5' (1950) was discovered with elements JD Max=2436999.28 + 0.2343973 E, range 15.6- 16.2m (pg) and asymmetry M-m=0.26.
I. S. Brjukhanov, V. P. Goranskij
doaj   +1 more source

THE DETERMINATION OF PERIODS AND THE DEFINITION OF VARIABILITY TYPE OF NEW VARIABLE STAR IRAS 17583+5150

open access: yesOdessa Astronomical Publications, 2017
The measurements of brightness of the star IRAS 17583+5150 discovered using the Odessa observatory negatives are discussed in the article. The proposed types of these stars are IRAS 17583+5150 -- type SRB (SRC).
A. P. Solonovich, I. S. Bryukhanov
doaj   +1 more source

Cataclysmic Variable Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1984
AbstractThe properties of cataclysmic variable outbursts are reviewed, and interpreted in terms of dynamical instabilities by the red component, and subsequent evolution of the white dwarf accretion disc subject to a mass transfer burst in the transfer stream.
openaire   +1 more source

Variable stars in Local Group Galaxies - II. Sculptor dSph [PDF]

open access: yes, 2016
We present the identification of 634 variable stars in the Milky Way dSph satellite Sculptor based on archival ground-based optical observations spanning $\sim$24 years and covering $\sim$ 2.5 deg$^2$.
Bernard, E. J.   +11 more
core   +2 more sources

OBSERVATIONS OF VARIABLE STARS WITH SMALL TELESCOPES

open access: yesOdessa Astronomical Publications, 2017
No ...
I. S. Bryukhanov
doaj   +1 more source

Sparse Logistic Regression for RR Lyrae versus Binaries Classification

open access: yesThe Astrophysical Journal, 2023
RR Lyrae (RRL) stars are old, low-mass, radially pulsating variable stars in their core helium burning phase. They are popular stellar tracers and primary distance indicators since they obey well-defined period–luminosity relations in the near-infrared ...
Piero Trevisan   +6 more
doaj   +1 more source

Searches of the periods and variability type definition of new variable stars AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori

open access: yesOdessa Astronomical Publications, 2017
Measurements of brightness of stars 1AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori opened in ”HIPPARCOS” experiment are carried out using negatives of the Odessa observatory.
A. P. Solonovich   +2 more
doaj   +1 more source

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