Mid-infrared Period-Luminosity Relations for Miras in the Large Magellanic Cloud
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 μm 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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 2021
- DOI:
- 10.3847/1538-4357/ac10c5
- arXiv:
- arXiv:2012.12910
- Bibcode:
- 2021ApJ...919...99I
- Keywords:
-
- Mira variable stars;
- Long period variable stars;
- Pulsating variable stars;
- Large Magellanic Cloud;
- Distance indicators;
- Stellar distance;
- Asymptotic giant branch stars;
- Carbon stars;
- Late-type giant stars;
- 1066;
- 935;
- 1307;
- 903;
- 394;
- 1595;
- 2100;
- 199;
- 908;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- Accepted for publication in The Astrophysical Journal. 18 pages, 8 figures, 4 tables. The full machine readable Table 3 will be available in the online journal just after publication