Bibcode
Sale, S. E.; Drew, J. E.; Barentsen, G.; Farnhill, H. J.; Raddi, R.; Barlow, M. J.; Eislöffel, J.; Vink, J. S.; Rodríguez-Gil, P.; Wright, N. J.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 443, Issue 4, p.2907-2922
Advertised on:
10
2014
Citations
106
Refereed citations
86
Description
We present a 3D map of extinction in the northern Galactic plane derived
using photometry from the INT/WFC Photometric Hα Survey of the
northern Galactic plane. The map has fine angular ( ˜ 10 arcmin)
and distance (100 pc) sampling allied to a significant depth (≳5
kpc). We construct the map using a method based on a hierarchical
Bayesian model described in a previous article by Sale. In addition to
mean extinction, we also measure differential extinction, which arises
from the fractal nature of the interstellar medium, and show that it
will be the dominant source of uncertainty in estimates of extinction to
some arbitrary position. The method applied also furnishes us with
photometric estimates of the distance, extinction, effective
temperature, surface gravity, and mass for ˜38 million stars. Both
the extinction map and the catalogue of stellar parameters are made
publicly available via http://www.iphas.org/extinction.
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