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http://dx.doi.org/10.5303/PKAS.2015.30.2.183

MID-INFRARED PERIOD-METALLICITY-LUMINOSITY RELATIONS AND KINEMATICS OF RR LYRAE VARIABLES  

DAMBIS, ANDREI K. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
BERDNIKOV, L.N. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
KNIAZEV, A. YU. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
KRAVTSOV, V.V. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
RASTORGUEV, A.S. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
SEFAKO, R. (South African Astronomical Observatory)
VOZYAKOVA, O.V. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
ZABOLOTSKIKH, M.V. (Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University)
Publication Information
Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 183-187 More about this Journal
Abstract
We use ALLWISE data release W1- and W2-band epoch photometry collected by the Wide-Field Infrared Survey Explorer (WISE) to determine slopes of the period-luminosity relations for RR Lyrae stars in 15 globular clusters in the corresponding bands. We further combine these results with V- and K-band photometry of Galactic field RR Lyrae stars to determine the metallicity slopes of the log $P_F-[Fe/H]-M_K$, log $P_F-[Fe/H]-M_{W1}$, and log $P_F-[Fe/H]-M_{W2}$ period-metallicity-luminosity relations. We infer the zero points of these relations and determine the kinematical parameters of thick-disk and halo RR Lyraes via statistical parallax, and estimate the RR Lyrae-based distances to 18 Local-Group galaxies including the center of the Milky Way.
Keywords
stars; variables; RR Lyrae; techniques; photometric;
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