A Color-locus Method for Mapping Using Ensembles of Stars
arXiv:1803.09072 · doi:10.3847/1538-4357/aaaa6d
Abstract
We present a simple but effective technique for measuring angular variation in across the sky. We divide stars from the Pan-STARRS1 catalog into Healpix pixels and determine the posterior distribution of reddening and for each pixel using two independent Monte Carlo methods. We find the two methods to be self-consistent in the limits where they are expected to perform similarly. We also find some agreement with high-precision photometric studies of in Perseus and Ophiuchus, as well as with a map of reddening near the Galactic plane based on stellar spectra from APOGEE. While current studies of are mostly limited to isolated clouds, we have developed a systematic method for comparing values for the majority of observable dust. This is a proof of concept for a more rigorous Galactic reddening map.x
arXiv comment21 pages, 20 figures
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