Results 141 to 150 of about 363 (172)
Cepheids, Thermally-Pulsing AGB Stars and RR Lyrae Variables: Cornerstones to the E/G Distance Scale
Barry Madore
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Proper motions of 64 RR Lyrae variable stars
Chinese Astronomy, 1979Abstract The relative proper motions of 64 RR Lyrae variables are determined using Turner's method. The first-epoch positions are taken from the Carte du Ciel Astrographic Catalogue, while the second-epoch positions are measured positions from plates taken with the 40-cm refractor ( f =6.9 m) of the Zo-Se Section, Shanghai Observatory, in 1962–1965 ...
null Wan Lai +3 more
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Subsystems of RR Lyrae variable stars in our Galaxy
Astronomy Reports, 2002We have used published, high-accuracy, ground-based and satellite proper-motion measurements, a compilation of radial velocities, and photometric distances to compute the spatial velocities and Galactic orbital elements for 174 RR Lyrae (ab) variable stars in the solar neighborhood.
T. V. Borkova, V. A. Marsakov
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A possible new RR Lyrae variable star
Publications of the Astronomical Society of the Pacific, 1984UBV observations and a light curve are presented for a new variable star, chosen to be a companion star for the very hot degenerate dwarf PG 1520 + 525, and these data are found to be consistent with the interpretation that the new variable is a halo RR Lyrae variable of Bailey's type 'c'.
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Applied Machine Learning for and Analysis of RR Lyrae Variable Stars
2018 2nd International Conference on I-SMAC (IoT in Social, Mobile, Analytics and Cloud) (I-SMAC)I-SMAC (IoT in Social, Mobile, Analytics and Cloud) (I-SMAC), 2018 2nd International Conference on, 2018Machine Learning is being used extensively in various fields. From health, physical systems and astronomy, the scope of automating process and analyzing data has no limits, added by the sheer amount of computation prowess. In this paper, we will use various Machine Learning Algorithms to perform supervised classification of one of the most relevant and
Jasvinder Singh +3 more
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Three-dimensional motion of dwarf stars and RR Lyrae variables
Publications of the Astronomical Society of the Pacific, 1979A collection of 220 high-velocity dwarfs, 532 low-velocity dwarfs, and 114 RR Lyrae variables is given in tables with calculations of kinematical quantities in a three-dimensional model of galactic space. A metal indicator, Delta-S, for RR Lyrae variables is transformed into the ultraviolet excess, delta (0.6), which is utilized for a statistical study
H. Saio, Y. Yoshii
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Variability of the period of the star DU Monocerotis, an RR Lyrae variable with the Blazhko effect
Astronomy Letters, 2017In 2012–2014 we obtained 3641 CCD frames of the fields of the RR Lyrae (AB subtype, P = 0.583 days) variable DU Mon with BV I c filters using the 76-cm telescope of the South African Astronomical Observatory (SAAO) and the 1-m telescopes of the Las Cumbres ...
L. N. Berdnikov +4 more
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Asteroseismology of RR Lyrae stars with non-radial modes
Monthly Notices of the Royal Astronomical Society, 2022H Netzel, R Smolec
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