Dust in three dimensions in the Galactic Plane

Abstract

We present three dimensional maps in monochromatic extinction $A_0$ and the extinction parameter $R_0$ within a few degrees of the Galactic plane. These are inferred using photometry from the Pan-STARRS1 and Spitzer Glimpse surveys of nearly $20$ million stars located in the region $l=0-250^{\circ }$ and from $b=-4.5^{\circ }$ to $b=4.5^{\circ }$. Given the available stellar number density, we use an angular resolution of $7^{\prime }\times 7^{\prime }$ and steps of $1\mathrm{mag}$ in distance modulus. We simultaneously estimate distance modulus and effective temperature $T_{\mathrm{eff}}$ alongside the other parameters for stars individually using the method of \citet{Hanson2014} before combining these estimates to a complete map. The full maps are available via the MNRAS website.

arXiv commentAccepted for publication in MNRAS. Free-access version available at http://mnras.oxfordjournals.org/cgi/content/abstract/stw2240?ijkey=8TdulFJR3q3ppl1&keytype=ref - data temporarily available at http://www.rhanson.de/gpdust

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