The M33 Synoptic Stellar Survey. II. Mira Variables

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.

arXiv commentIncludes small corrections to match the published version

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• Large Magellanic Cloud Near-Infrared Synoptic Survey. V. Period-Luminosity Relations of Miras
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• The OGLE Collection of Variable Stars. Nearly 66,000 Mira stars in the Milky Way
• The Mira Distance to M101 and a 4% Measurement of H0
• Near-infrared Mira Period-Luminosity Relations in M33
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• The period--luminosity relation for Mira variables in the Milky Way using Gaia DR3: a further distance anchor for $H_0$
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• A three-dimensional map of the Milky Way using 66,000 Mira variable stars
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• The High Cadence Transient Survey (HITS): Compilation and characterization of light-curve catalogs
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• A Remarkable Oxygen-rich Asymptotic Giant Branch Variable in the Sagittarius Dwarf Irregular Galaxy
• New type II Cepheids from VVV data towards the Galactic center
• Calibrating Long Period Variables as Standard Candles with Machine Learning
• A Distance Measurement to M33 Using Optical Photometry of Mira Variables
• Long-Period High-Amplitude Red Variables in the KELT Survey
• Long-period maser-bearing Miras in the Galactic center: period-luminosity relations and extinction estimates
• M33 Cepheids from CFHT/MegaCAM survey