# Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry

## TL;DR

This paper compiles and analyzes multi-wavelength phased photometry for 55 Galactic RR Lyrae stars, creating high-quality light curves across optical to mid-infrared bands using new and archival data over 30 years.

## Contribution

It provides a comprehensive, self-consistent multi-band photometric dataset for RR Lyrae stars, including new observations from the TMMT telescope and detailed data processing methods.

## Key findings

- High-fidelity light curves across 10 bands from 0.4 to 4.5 microns.
- Derived mean magnitudes, amplitudes, and light curve parameters.
- Extensive dataset spanning 30 years of observations.

## Abstract

We present a multi-wavelength compilation of new and previously-published photometry for 55 Galactic field RR Lyrae variables. Individual studies, spanning a time baseline of up to 30 years, are self-consistently phased to produce light curves in 10 photometric bands covering the wavelength range from 0.4 to 4.5 microns. Data smoothing via the GLOESS technique is described and applied to generate high-fidelity light curves, from which mean magnitudes, amplitudes, rise-times, and times of minimum and maximum light are derived. 60,000 observations were acquired using the new robotic Three-hundred MilliMeter Telescope (TMMT), which was first deployed at the Carnegie Observatories in Pasadena, CA, and is now permanently installed and operating at Las Campanas Observatory in Chile. We provide a full description of the TMMT hardware, software, and data reduction pipeline. Archival photometry contributed approximately 31,000 observations. Photometric data are given in the standard Johnson UBV, Kron-Cousins RI, 2MASS JHK, and Spitzer [3.6] & [4.5] bandpasses.