A photometric map of interstellar reddening within 100 PC

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Maps, Astronomical Photometry, Interstellar Extinction, Interstellar Matter, Late Stars, Cosmic Dust, F Stars, Spatial Distribution, Stellar Spectrophotometry, Visible Spectrum

Scientific paper

Color excesses and distances are calculated for 300 bright, northern, late F stars using uvby beta photometric indices. The data allow an extension of the earlier maps by Perry and Johnston of the spatial distribution of interstellar reddening into the local (r less than 100 pc) solar neighborhood. Some definite conclusions are made regarding the distribution of interstellar dust in the northern hemisphere and within 300 pc of the sun by merging these results and the polarimetric observations by Tinbergen (1982) for 180 stars within 35 pc of the sun.

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