A three dimensional extinction map of the Galactic Anticentre from multi-band photometry

Abstract

We present a three dimensional extinction map in $r$ band. The map has a spatial angular resolution, depending on latitude, between 3 -- 9\,arcmin and covers the entire XSTPS-GAC survey area of over 6,000\,$\mathrm{de}{\mathrm{g}}^2$ for Galactic longitude $140\le$ $l$ $\le 220°$ and latitude $-40\le$ $b$ $\le 40°$. By cross-matching the photometric catalog of the Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre (XSTPS-GAC) with those of 2MASS and WISE, we have built a multi-band 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-fit 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-fit 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-fit SED algorithm.

20 pages, 18 figures, accepted in MNRAS

References in corpus (12)

• The Milky Way Tomography with SDSS: II. Stellar Metallicity
• Stellar SEDs from 0.3-2.5 Microns: Tracing the Stellar Locus and Searching for Color Outliers in SDSS and 2MASS
• SDSS Standard Star Catalog for Stripe 82: the Dawn of Industrial 1% Optical Photometry
• A Large Catalog of Accurate Distances to Molecular Clouds from PS1 Photometry
• Ground-based CCD astrometry with wide field imagers. II. A star catalogue for M67: [email protected] MPG/ESO astrometry, FLAMES@VLT radial velocities
• An Analysis of the Shapes of Interstellar Extinction Curves. VI. The Near-IR Extinction Law
• The orbits of open clusters in the Galaxy
• The Structure of Molecular Clouds: I - All Sky Near Infrared Extinction Maps
• Mapping the Milky Way bulge at high resolution: the 3D dust extinction, CO, and X factor maps
• The SDSS-2MASS-WISE Ten Dimensional Stellar Color Locus
• High Spatial Resolution Galactic 3D Extinction Mapping with IPHAS
• A large scale extinction map of the Galactic Anticenter from 2MASS

Cited by in corpus (29)

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• Three-Dimensional Distribution of the Interstellar Dust in the Milky Way
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• 3D Stellar Reddening Map from 2MASS Photometry: An Improved Version
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• Constraining the Galactic structure parameters with the XSTPS-GAC and SDSS photometric surveys
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• First detection of the field star overdensity in the Perseus arm
• Stellar loci III: Photometric metallicities for half million FGK stars of Stripe 82
• Relative Flux Calibration of the LAMOST Spectroscopic Survey of the Galactic Anti-center
• Dust distributions in the Magellanic Clouds
• The Gaia-ESO Survey: Tracing interstellar extinction
• The Optical -- Mid-infrared Extinction Law of the l=165 Sightline in the Galactic Plane: Diversity of Extinction Law in the Diffuse Interstellar Medium
• Interstellar Extinction
• Dust in three dimensions in the Galactic Plane
• FEDReD I: 3D extinction and stellar maps by Bayesian deconvolution
• The distances to molecular clouds in the fourth Galactic quadrant
• The Luminosity and Stellar Mass Functions of Red W1-W2 Galaxies
• The distances of 61 PGCCs in the Second Galactic Quadrant