# The M33 Synoptic Stellar Survey. II. Mira Variables

## TL;DR

This paper reports the discovery of 1847 Mira variable candidates in galaxy M33 using advanced algorithms, and derives preliminary Period-Luminosity relations across multiple wavelengths, enhancing understanding of stellar properties in Local Group galaxies.

## Contribution

Introduction of a novel semi-parametric periodogram and machine learning approach to identify Mira variables in M33, with preliminary multi-wavelength Period-Luminosity relations.

## Key findings

- 1847 Mira candidates identified in M33
- Preliminary Period-Luminosity relations derived
- Comparison with LMC relations conducted

## Abstract

We present the discovery of 1847 Mira candidates in the Local Group galaxy M33 using a novel semi-parametric periodogram technique coupled with a Random Forest classifier. The algorithms were applied to ~2.4x10^5 I-band light curves previously obtained by the M33 Synoptic Stellar Survey. We derive preliminary Period-Luminosity relations at optical, near- & mid-infrared wavelengths and compare them to the corresponding relations in the Large Magellanic Cloud.