The MACHO Project Large Magellanic Cloud Variable Star Inventory. XI. Frequency Analysis of the Fundamental-Mode RR Lyrae Stars

  title={The MACHO Project Large Magellanic Cloud Variable Star Inventory. XI. Frequency Analysis of the Fundamental-Mode RR Lyrae Stars},
  author={Charles R. Alcock and David Randall Alves and Andrew Cameron Becker and David P. Bennett and K. H. Cook and Andrew J. Drake and Kenneth C. Freeman and Marla Geha and Kim Griest and G'abor Kov'acs and Matthew J. Lehner and Stuart L. Marshall and Dante Minniti and Cailin Anne Nelson and Bradley M. Peterson and Piotr Popowski and Mark Robin Pratt and Peter Quinn and Alex W. Rodgers and Christopher W. Stubbs and William J. Sutherland and Thor Vandehei and D. L. Welch},
  journal={The Astrophysical Journal},
We have frequency-analyzed 6391 variables classified earlier as fundamental-mode RR Lyrae (RR0) stars in the MACHO database on the Large Magellanic Cloud (LMC). The overwhelming majority (i.e., 96%) of these variables have been proved to be indeed RR0 stars, whereas the remaining ones have fallen into one of the following categories: single- and double-mode Cepheids, binaries, first-overtone and double-mode RR Lyrae stars, and nonclassified variables. Special attention has been paid to the… Expand
Blazhko-type fundamental-mode RR Lyrae stars in the globular cluster M3
  • J. Jurcsik
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • 2019
Blazhko stars from the extended BVIC time series of RRab stars in the globular cluster M3 are analysed. This is the largest sample of Blazhko stars with full details of their Blazhko properties inExpand
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We analyse the OGLE-IV photometry of the first overtone and double-mode RR Lyrae stars (RRc/RRd) in the two fields towards the Galactic bulge observed with high cadence. In 27 per cent of RRc starsExpand
Multiperiodic Galactic field RR Lyrae stars in the ASAS catalogue
The All Sky Automated Survey (ASAS) monitors bright stars (8 < V < 14 mag) south of declination +28 ◦ . The ASAS Catalogue of Variable Stars (ACVS) presently contains 50 099 objects; among them areExpand
The SERMON project: 48 new field Blazhko stars and an investigation of modulation-period distribution
We investigated 1234 fundamental mode RR Lyrae stars observed by the All Sky Automated Survey (ASAS) to identify the Blazhko (BL) effect. A sample of 1547 BL stars from the literature was collectedExpand
Metal Abundances, Radial Velocities, and Other Physical Characteristics for the RR Lyrae Stars in The Kepler Field
Spectroscopic iron-to-hydrogen ratios, radial velocities, atmospheric parameters, and new photometric analyses are presented for 41 RR Lyrae stars (and one probable high-amplitude δ Sct star) locatedExpand


More than 1300 variables classified provisionally as first-overtone RR Lyrae pulsators in the MACHO variable-star database of the Large Magellanic Cloud (LMC) have been subjected to standardExpand
On the double-mode RR Lyrae variables of the Sculptor dwarf galaxy
Frequency analysis of more than 300 stars of the ogle data base on Sculptor galaxy has led to the discovery of 18 double-mode RR Lyrae (RRd) variables. This yields a 20% incidence rate forExpand
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Metallicities for six double-mode RR Lyrae stars (RRd's) in the Large Magellanic Cloud have been estimated using the ΔS method. The derived [Fe/H] values are in the range [Fe/H] = -1.09 to -1.78 (orExpand
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Analysis of 746 new V-band observations of the RR Lyrae star AH Cam obtained during 1989 - 1992 clearly show that its light curve cannot be described by a single period. In fact, at first glance, theExpand
The Clusters AgeS Experiment (CASE): RR Lyrae variables in the globular cluster NGC 6362
ABSTRA C T We present V- and B-band charge-coupled device (CCD) photometry of 35 RR Lyr stars in the Southern hemisphere globular cluster NGC 6362. Fourier decomposition of the light curves was usedExpand
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We carried out a period analysis on 3700 RR Lyrae stars on two Schmidt elds centred on (l;b )=( 3:1, 7.1 )a nd (6.6, 10.8) respectively, covering an area of50 deg 2 . These stars are distributedExpand
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Our former study on the empirical relations between the Fourier parameters of the light curves of the fundamental mode RR Lyrae stars and their basic stellar parameters has been extended toExpand
Calibration of the MACHO Photometry Database
The MACHO Project is a microlensing survey that monitors the brightnesses of ~60 million stars in the Large Magellanic Cloud (LMC), Small Magellanic Cloud, and Galactic bulge. Our database presentlyExpand
The evolution of He-burning stars - Horizontal and asymptotic branches in Galactic globulars
A grid of theoretical evolutionary models covering the horizontal-branch (HB) and the asymptotic-giant-branch (AGB) phases of globular cluster stars is presented. The computations were performed forExpand