The Hidden Potential of VVV RR Lyrae Light Curves
Abstract
We introduce a new method of determining the average magnitudes of RR Lyrae variables: in the K_{S}-band, based on robust fitting of principal components from a high-quality training sample; in the J-band, using the amplitudes of the K_{S} principal components to approximate the J-band light-curve shape in each pulsation phase. Furthermore, it has been found that the metallicity of individual RR Lyrae variables can be inferred from the K_{S}-band light curves.
- Publication:
-
The RR Lyrae 2017 Conference. Revival of the Classical Pulsators: from Galactic Structure to Stellar Interior Diagnostics
- Pub Date:
- June 2018
- Bibcode:
- 2018pas6.conf..295H