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

A. K. Dambis | Zendy; Л. Н. Бердников | Zendy; A. Y. Kniazev | Zendy; В. В. Кравцов | Zendy; А. С. Расторгуев | Zendy; Ramotholo Sefako | Zendy; O. V. Vozyakova | Zendy; M. V. Zabolotskikh | Zendy

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

Author(s) -

A. K. Dambis,

Л. Н. Бердников,

A. Y. Kniazev,

В. В. Кравцов,

А. С. Расторгуев,

Ramotholo Sefako,

O. V. Vozyakova,

M. V. Zabolotskikh

Publication year - 2015

Publication title -

publications of the korean astronomical society

Language(s) - English

Resource type - Journals

eISSN - 2287-6936

pISSN - 1225-1534

DOI - 10.5303/pkas.2015.30.2.183

Subject(s) - rr lyrae variable , period (music) , metallicity , astrophysics , infrared , luminosity , kinematics , astronomy , physics , galaxy , classical mechanics , acoustics , globular cluster

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 eld 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.

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