New Optical and Mid-Infrared RR Lyrae Period-Luminosity-Metallicity Relations for Precision Distances and Metallicity Distributions in the Magellanic Clouds

arXiv:2609.27119 · astro-ph.GA, astro-ph.SR · Submitted 2026-09-22 · Read on arXiv

astro-ph.GA, astro-ph.SR

Submitted: 2026-09-22

Updated: 2026-09-22

Comments: 24 pages, 10 figures, 8 tables. Submitted to ApJ

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Metallicity — 125× in this paper · explained in 3 episodes
• Calibration — 16× in this paper · explained in 7 episodes
• Abundance — 10× in this paper · explained in 1 episode
• Magellanic Stream — 9× in this paper
• Trace — 7× in this paper · explained in 2 episodes
• Accuracy — 4× in this paper · explained in 1 episode
• Clustering — 4× in this paper · explained in 2 episodes
• Large Magellanic Cloud — 3× in this paper
• Alignment — 2× in this paper · explained in 1 episode
• Homogeneity — 2× in this paper · explained in 2 episodes
• Association of Universities for Research in Astronomy — 1× in this paper
• Benchmark — 1× in this paper · explained in 2 episodes
• European Space Agency — 1× in this paper
• Jet Propulsion Laboratory — 1× in this paper
• Large and Small Magellanic Clouds — 1× in this paper
• Robustness — 1× in this paper · explained in 5 episodes
• Selection Bias — 1× in this paper · explained in 4 episodes

Sources

• Chemo-kinematics of the $Gaia$ RR Lyrae: the halo and the disc
• OGLE-ing the Magellanic System: Photometric Metallicity from Fundamental Mode RR Lyrae Stars
• Analysis of photometric uncertainties in the OGLE-IV Galactic Bulge microlensing survey data
• Metallicity dependence of the Blazhko effect
• The OGLE Collection of Variable Stars. Over 45 000 RR Lyrae Stars in the Magellanic System
• Properties of a Proper-Motion Selected Sample of Giants in the Small Magellanic Cloud near NGC 121
• OGLE-IV: Fourth Phase of the Optical Gravitational Lensing Experiment

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