[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5140/JASS.2008.25.3.245

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

Sohn, Y.J. (Department of Astronomy, IEAA, Yonsei University)
Kang, A. (Department of Astronomy, IEAA, Yonsei University)
Han, W. (Korea Astronomy and Space Science Institute)
Park, J.H. (Korea Astronomy and Space Science Institute)
Kim, H.I. (Korea Astronomy and Space Science Institute)
Kim, J.W. (Department of Astronomy, IEAA, Yonsei University)
Shin, I.G. (Department of Astronomy, IEAA, Yonsei University)
Chun, S.H. (Department of Astronomy, IEAA, Yonsei University)

Publication Information

Journal of Astronomy and Space Sciences / v.25, no.3, 2008 , pp. 245-248 More about this Journal

Abstract

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) = $23.39{\pm}0.14$ , $23.23{\pm}0.22$ , and $23.27{\pm}0.26$ for J,H, and K bands, respectively. Distance modulus in bolometric magnitude is also derived as (m - M) = $23.62{\pm}0.12$ .

Keywords

TRGB; distance modulus; near-infrared; NGC 185;

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Times Cited By KSCI : 1 (Citation Analysis)

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