A "short" distance to the large magellanic cloud with the Hipparcos calibrated red clump stars

K. Z. Stanek, D. Zaritsky, J. Harris

Research output: Contribution to journalArticle

63 Scopus citations

Abstract

Following an approach developed by Paczyński & Stanek, we derive a distance to the Large Magellanic Cloud (LMC) by comparing red clump stars from the Hipparcos catalog with the red clump stars observed in two fields in the LMC that were selected from the ongoing photometric survey of the Magellanic Clouds to lie in low-extinction regions. The use of red clump stars allows a single step determination of the distance modulus to the LMC, μ0.LMC = 18.065 ± 0.031 ± 0.09 mag (statistical plus systematic error), and the corresponding distance, RLMC = 41.02 ± 0.59 ± 1.74 kpc. This measurement is in excellent agreement with the recent determination by Udalski et al., also based on the red clump stars, but is ∼0.4 mag smaller than the generally accepted value of μ0.LMC = 18.50 ± 0.15 mag. We discuss possible reasons for this discrepancy and how it can be resolved.

Original languageEnglish (US)
Pages (from-to)L141-L144
JournalAstrophysical Journal
Volume500
Issue number2 PART II
DOIs
StatePublished - Jan 1 1998

Keywords

  • Galaxies: distances and redshifts
  • Galaxies: individual (Large Magellanic Cloud) solar neighborhood
  • Stars: horizontal-branch

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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