Fit templates to RR Lyrae to estimate star variability parameters. The code takes data like this:
and outputs 5 parameters (distance modulus, dust, amplitude, frequency, and phase) which can be used to construct the folded light curve:
The model is designed to work even on very sparsely sampled light curves. Fitting the model to this Dark Energy Survey RR Lyrae
we determine it has a period about 0.54 days, distance modulus of 19.2 and folded light curve:
The fitting code is written in R. This software includes demonstrations in both R and python (via rpy2) in the files demo_R.ipynb and demo_python.ipynb.
These templates were constructed for and used in Stringer et. al. 2018+ in prep.
The templates were constructed by James Long (jlong@stat.tamu.edu). Please contact with questions or bug reports. The code used to construct the templates (from SDSS Stripe 82 RR Lyrae) is available from Long upon request.
This software is covered by an MIT license. See the LICENSE file for details.