Near-IR TRGB Distance to Dwarf Elliptical Galaxy NGC 147

Details Near-IR TRGB Distance to Dwarf Elliptical Galaxy NGC 147 Near-IR TRGB Distance to Dwarf Elliptical Galaxy NGC 147

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jass...24..203k&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 24, no. 3, 203-208

Astronomy and Astrophysics

Astronomy

4

Trgb, Distance Modulus, Near-Infrared, Ngc 147

Scientific paper

We report the distance modulus of nearby dwarf elliptical galaxy NGC 147 estimated from the Tip of Red-giant Branch (TRGB) method applying to the color-magnitude diagrams and luminosity functions in the near-infrared JHK bands. Apparent magnitudes of TRGBs in each band are obtained by applying Savitzky-Golay filter to the luminosity functions, and the theoretical absolute magnitudes are estimated from Yonsei-Yale isochrones. The derived values of distance modulus to NGC 147 are (m-M)=23.69±0.12, 23.78±0.17, and 23.85±0.22 for J, H, and K bands, respectively. Distance modulus in bolometric magnitude is also derived as (m-M)=23.87±0.11. We compare the derived values of the TRGB distance modulus to NGC 147 in the near-infrared bands with the previous results in other bands.

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