Dust in three dimensions in the Galactic plane

作者：Hanson R J^*; Bailer Jones C A L^*; Burgett W S; Chambers K C; Hodapp K W; Kaiser N; Tonry J L; Wainscoat R J; Waters C

来源：Monthly Notices of the Royal Astronomical Society, 2016, 463(4): 3604-3615.

DOI：10.1093/mnras/stw2240

• methods: data analysis
• methods: statistical
• surveys
• stars: distances
• stars: fundamental parameters
• dust, extinction

We present three-dimensional maps in monochromatic extinction A(0) and the extinction parameter R-0 within a few degrees of the Galactic plane. These are inferred using photometry from the Pan-STARRS1 and Spitzer GLIMPSE (Galactic Legacy Infrared Mid-Plane Survey Extraordinaire) surveys of nearly 20 million stars located in the region l = 0 degrees-250 degrees and from b = -4 degrees.5 to 4 degrees.5. Given the available stellar number density, we use an angular resolution of 7 arcmin x 7 arcmin and steps of 1 mag in distance modulus. We simultaneously estimate distance modulus and effective temperature T-eff alongside the other parameters for stars individually using the method of Hanson & Bailer-Jones before combining these estimates to a complete map. The full maps are available via the MNRAS website.

• 出版日期2016-12