A search for binary candidates among the fundamental mode RR Lyrae stars observed byKepler
نویسندگان
چکیده
منابع مشابه
Double mode RR Lyrae stars in Omega Centauri
Aims. The aim of this work was to search for double mode pulsators among RR Lyr variables of globular cluster ω Cen. Methods. We conducted a systematic frequency analysis of CASE photometry of ω Cen RR Lyr stars. We searched for periodicities using Fourier and ANOVA periodograms, combined with consecutive prewhitening technique. Results. We discovered six double mode pulsators, with the first o...
متن کاملRr Lyrae Stars in the Macho Database
The MACHO Project has catalogued 8000 RR Lyrae stars in the Large Magellanic Cloud, 1800 in the Galactic bulge, and 50 in the Sgr dwarf galaxy. These variables are excellent distance indicators, and are used as tools to study the structure of the Large Magellanic Cloud and the bulge. The large datasets also probe uncommon pulsation modes. A number of double-mode RR Lyrae stars (RRd) are found i...
متن کاملThe Macho Project Large Magellanic Cloud Variable Star Inventory. Xi. Frequency Analysis of the Fundamental Mode Rr Lyrae Stars
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 in one of the following categories: singleand double-mode Cepheids, binaries, first overtone and do...
متن کاملCatalog of fundamental mode RR Lyrae stars in the Galactic bulge from the Optical Gravitational Lensing Experiment
We present a catalog of 1888 distinct fundamental-mode RR Lyrae stars detected in the Galactic bulge fields of the second phase of the Optical Gravitational Lensing Experiment (OGLE), covering an area near 11 deg. These stars were selected primarily according to their light curve morphologies. The catalog includes basic parameters of the light curves, significant frequencies detected close to t...
متن کاملThe distance modulus of the Large Magellanic Cloud based on double-mode RR Lyrae stars
We use double-mode RR Lyrae (RRd) stars from the macho variable star database of the Large Magellanic Cloud (LMC) to estimate its distance, by utilizing photometric data, linear pulsation and stellar atmosphere models. If we set EB−V = 0.11 and [M/H]= −1.5 for LMC, we get M − m = 18.52 mag, which is in agreement with the value obtained from Galactic cluster RRd stars. Although the formal statis...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2015
ISSN: 2100-014X
DOI: 10.1051/epjconf/201510106030