Mid-infrared Period–Luminosity Relations for Miras in the Large Magellanic Cloud
Patryk Iwanek, Igor Soszyński, Szymon Kozłowski
Abstract
Abstract We present the mid-infrared (mid-IR) period–luminosity relations (PLRs) using over 1000 Mira variables in the Large Magellanic Cloud, for the four Wide-field Infrared Survey Explorer and the four Spitzer bands. These PLRs cover a mid-IR wavelength range from 3.4–22 μ m and are presented separately for the oxygen-rich (O-rich) and carbon-rich (C-rich) Miras. These relations can be used to measure distances to individual O-rich and/or C-rich Mira stars with an accuracy of 5% and 12%, respectively. They are the most accurate Mira PLRs in the mid-IR to date.
Topics & Concepts
PhysicsLarge Magellanic CloudAstronomyStarsAstrophysicsCover (algebra)Measure (data warehouse)Range (aeronautics)Remote sensingWavelengthInfraredCloud computingAstrometryData reductionVariable starStellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchAstrophysics and Star Formation Studies