English

Comparison of Different Methods to Determine the Distance to LMC

Astrophysics of Galaxies 2025-03-28 v1 Instrumentation and Methods for Astrophysics

Abstract

This research paper aims to compare different methods for calculating the distance to the Large Magellanic Cloud (\textit{LMC}). The distance, dLMCd_{LMC}, is determined using stellar parallax, variable stars (RR Lyrae and Classical Cepheids), redshift, and celestial mechanics, from which the systematic and standard errors are calculated. After analyzing each method, the final distance is obtained as dLMC=50.4802±0.0638stdd_{LMC} = 50.4802 \pm 0.0638_{\text{std}} Kpc, differing by +0.5102+0.5102 Kpc from the currently most accepted value of dLMC=49.97d_{LMC} = 49.97 Kpc (Pietrzy\'nski, 2014). In this paper, the value of dLMCd_{LMC} was derived by combining the distances determined from RR Lyrae and Classical Cepheid variable stars, celestial mechanics and parallax.

Keywords

Cite

@article{arxiv.2503.21120,
  title  = {Comparison of Different Methods to Determine the Distance to LMC},
  author = {Juan José Sánchez Medina},
  journal= {arXiv preprint arXiv:2503.21120},
  year   = {2025}
}

Comments

25 pages, 13 figures. For Repository Associated: see https://github.com/jj-sm/DistanceToLMC