A parsec-scale Galactic 3D dust map out to 1.25 kpc from the Sun

Edenhofer, Gordian; Zucker, Catherine; Frank, Philipp; Saydjari, Andrew K.; Speagle, Joshua S.; Finkbeiner, Douglas P.; Enßlin, T. A.

doi:10.1051/0004-6361/202347628

articleAstronomy and AstrophysicsFeb 16, 2024DIAMOND OA

A parsec-scale Galactic 3D dust map out to 1.25 kpc from the Sun

GEGordian Edenhofer CZCatherine Zucker PFPhilipp Frank AKAndrew K. Saydjari JSJoshua S. Speagle

Max Planck Institute for Astrophysics · Center for Astrophysics Harvard & Smithsonian · +4 more institutions

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Abstract

Context. High-resolution 3D maps of interstellar dust are critical for probing the underlying physics shaping the structure of the interstellar medium, and for foreground correction of astrophysical observations affected by dust. Aims. We aim to construct a new 3D map of the spatial distribution of interstellar dust extinction out to a distance of 1.25 kpc from the Sun. Methods. We leveraged distance and extinction estimates to 54 million nearby stars derived from the Gaia BP/RP spectra. Using the stellar distance and extinction information, we inferred the spatial distribution of dust extinction. We modeled the logarithmic dust extinction with a Gaussian process in a spherical coordinate system via iterative…

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Topics & keywords

Topics

Keywords

Physics
Parsec
Astrophysics
Astronomy
Scale (ratio)
Active galactic nucleus
Galaxy

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