Journal of Astronomy and Space Sciences (Sep 2008)

The Near-IR TRGB Magnitude and Distance Modulus to NGC 185

  • Y.-J. Sohn,
  • A. Kang,
  • W. Han,
  • J.-H. Park,
  • H.-I. Kim,
  • J.-W. Kim,
  • I.-G. Shin,
  • S.-H. Chun

DOI
https://doi.org/10.5140/JASS.2008.25.3.245
Journal volume & issue
Vol. 25, no. 3
pp. 245 – 248

Abstract

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We determined values of distance modulus to nearby dwarf galaxy NGC 185 from the Tip of Red-Giant Branch (TRGB) method. Apparent magnitudes of the TRGB are estimated from the near-infrared JHK luminosity functions (LFs) of the resolved giant branch stars. Theoretical absolute magnitudes of the TRGB in near-infrared bands have been extracted from the Yonsei-Yale isochrones. The observed apparent and theoretical absolute magnitudes of the TRGB provide values of distance modulus to NGC 185 as (m - M).

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