| Autor: |
Albert Lee, Gregory M. Green, Edward F. Schlafly, Douglas P. Finkbeiner, William Burgett, Ken Chambers, Heather Flewelling, Klaus Hodapp, Nick Kaiser, Rolf-Peter Kudritzki, Eugene Magnier, Nigel Metcalfe, Richard Wainscoat, Christopher Waters |
| Předmět: |
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| Zdroj: |
Astrophysical Journal; 2/20/2018, Vol. 854 Issue 2, p1-1, 1p |
| Abstrakt: |
We present a simple but effective technique for measuring angular variation in RV across the sky. We divide stars from the Pan-STARRS1 catalog into Healpix pixels and determine the posterior distribution of reddening and RV 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 RV 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 RV are mostly limited to isolated clouds, we have developed a systematic method for comparing RV values for the majority of observable dust. This is a proof of concept for a more rigorous Galactic reddening map. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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