A three-dimensional extinction map of the Galactic anticentre from multiband photometry
Chen, B. -Q. ; Liu, X. -W. ; Yuan, H. -B. ; Zhang, H. -H. ; Schultheis, M. ; Jiang, B. -W. ; Huang, Y. ; Xiang, M. -S. ; Zhao, H. -B. ; Yao, J. -S. ; Lu, H.
We present a three-dimensional extinction map in the r band. The map has a spatial angular resolution, depending on latitude, between 3 and 9 arcmin and covers the entire Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre (XSTPS-GAC) survey area of over 6000 deg2 for Galactic longitude 140 < l < 240 deg and latitude -60 < b < 40 deg. By cross-matching the photometric catalogue of the XSTPS-GAC with those of 2MASS and WISE, we have built a multiband photometric stellar sample of about 30 million stars and applied spectral energy distribution (SED) fitting to the sample. By combining photometric data from the optical to the near-infrared, we are able to break the degeneracy between the intrinsic stellar colours and the amounts of extinction by dust grains for stars with high photometric accuracy, and trace the extinction as a function of distance for low Galactic latitude and thus highly extincted regions. This has allowed us to derive the best-fitting extinction and distance information of more than 13 million stars, which are used to construct the three-dimensional extinction map. We have also applied a Rayleigh-Jeans colour excess (RJCE) method to the data using the 2MASS and WISE colour (H - W2). The resulting RJCE extinction map is consistent with the integrated two-dimensional map deduced using the best-fitting SED algorithm. However for individual stars, the amounts of extinction yielded by the RJCE method suffer from larger errors than those given by the best-fitting SED algorithm.
Files
.. chen2014map.dat
469MB
..
Paper Information
Paper Title:
A three-dimensional extinction map of the Galactic anticentre from multiband photometry
Publication:
Monthly Notices of the Royal Astronomical Society
Bibcode:
2014MNRAS.443.1192C
DOI:
10.1093/mnras/stu1192
Identifiers
CSTR:
11379.11.101060
DOI:
10.12149/101060
VO Identifier:
ivo://China-VO/paperdata/101060
Publication Date:
2021-05-19
Citation Guidelines
Chen, B. -Q. ; Liu, X. -W. ; Yuan, H. -B. ; Zhang, H. -H. ; Schultheis, M. ; Jiang, B. -W. ; Huang, Y. ; Xiang, M. -S. ; Zhao, H. -B. ; Yao, J. -S. ; Lu, H. et al. 2021. A three-dimensional extinction map of the Galactic anticentre from multiband photometry. Version 1.0. https://doi.org/10.12149/101060
@misc{10.12149/101060,
doi = {10.12149/101060},
url = {https://doi.org/10.12149/101060},
author = {Chen, B. -Q. ; Liu, X. -W. ; Yuan, H. -B. ; Zhang, H. -H. ; Schultheis, M. ; Jiang, B. -W. ; Huang, Y. ; Xiang, M. -S. ; Zhao, H. -B. ; Yao, J. -S. ; Lu, H.},
title = {A three-dimensional extinction map of the Galactic anticentre from multiband photometry},
version = {1.0},
publisher = {Nataional Astronomical Data Center of China},
year= {2021}
}
Versions
Version 1.0 (current)
2021-05-19
Main
This DOI represents all versions, and will always resolve to the latest one.
2021-05-19