Large Magellanic Cloud Near-infrared Synoptic Survey. V. Period-Luminosity Relations of Miras
Abstract
We study the near-infrared properties of 690 Mira candidates in the central region of the Large Magellanic Cloud, based on time-series observations at JHK s . We use densely sampled I-band observations from the OGLE project to generate template light curves in the near-infrared and derive robust mean magnitudes at those wavelengths. We obtain near-infrared Period-Luminosity relations for oxygen-rich Miras with a scatter as low as 0.12 mag at K s . We study the Period-Luminosity-Color relations and the color excesses of carbon-rich Miras, which show evidence for a substantially different reddening law.
- Publication:
-
The Astronomical Journal
- Pub Date:
- October 2017
- DOI:
- 10.3847/1538-3881/aa86f1
- arXiv:
- arXiv:1708.04742
- Bibcode:
- 2017AJ....154..149Y
- Keywords:
-
- distance scale;
- stars: variables: general;
- Astrophysics - Solar and Stellar Astrophysics;
- Statistics - Applications
- E-Print:
- Accepted for publication in The Astronomical Journal