The reddening to the galaxy IC 342 from CCD BV photometry of its brightest stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Interacting Galaxies, Interstellar Extinction, Red Shift, Stellar Luminosity, Astronomical Maps, Charge Coupled Devices, Color-Magnitude Diagram, Ubv Spectra

Scientific paper

An attempt was made to estimate the reddening for the galaxy IC 342 on the basis of CCD BV photometry obtained for 117 stars brighter than V = 22.0 mag in a field centered near a spiral arm. At V = 19.4 mag, the plume of the main sequence and slightly evolved blue supergiant stars were detected. The plume is centered at a color of (B-V) = 0.54 mag. A comparison with similar color-magnitude-diagram data for the brightest stars in IC 1613 suggests that these stars in IC 342 are reddened by E(B-V) = 0.79 +/- 0.05 mag (AB = 3.32 +/- 0.21 mag).

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