期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 443, 期 4, 页码 2907-2922出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu1090
关键词
surveys; stars: fundamental parameters; dust, extinction; ISM: structure
资金
- United Kingdom Science Technology and Facilities Council (STFC) [ST/K00106X/1, ST/J001333/1]
- STFC studentship
- Ramon y Cajal fellowship [RYC-2010-05762]
- Spanish MINECO [AYA2012-38700]
- European Research Council under the European Union's Seventh Framework Programme (FP)/ERC [320964]
- Science and Technology Facilities Council [ST/I000860/1, ST/J001333/1, ST/I505699/1, ST/L001403/1, ST/I001077/1, ST/K00106X/1, ST/J001511/1] Funding Source: researchfish
- STFC [ST/I000860/1, ST/L001403/1, ST/K00106X/1, ST/J001333/1, ST/I001077/1, ST/J001511/1, ST/I505699/1] Funding Source: UKRI
We present a 3D map of extinction in the northern Galactic plane derived using photometry from the INT/WFC Photometric Ha Survey of the northern Galactic plane. The map has fine angular (similar to 10 arcmin) and distance (100 pc) sampling allied to a significant depth (greater than or similar to 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 similar to 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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