- The Near-IR TRGB Magnitude and Distance Modulus to NGC 185
- ㆍ 저자명
- Sohn. Y.J.,Kang. A.,Han. W.,Park. J.H.,Kim. H.I.,Kim. J.W.,Shin. I.G.,Chun. S.H.
- ㆍ 간행물명
- 韓國宇宙科學會誌
- ㆍ 권/호정보
- 2008년|25권 3호|pp.245-248 (4 pages)
- ㆍ 발행정보
- 한국우주과학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
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) = $23.62{pm}0.12$.