FEDReD. Extinction map with 2MASS and Gaia DR2

We apply the FEDReD algorithm to the 2MASS near-infrared photometry together with the Gaia DR2 astrometry and photometry. This algorithm uses a Bayesian deconvolution approach, based on an empirical HR-diagram representative of the local thin disk, in order to map the extinction as a function of distance for various fields of view.

We analysed more than 5.6 million stars to obtain an extinction map of the entire Galactic disk within |b|<0.24{deg}. This map provides information up to 5kpc in the direction of the Galactic centre and at more than 7kpc in the direction of the anticentre. This map reveals the complete shape of structures known locally, such as the Vela complex or the split of the local arm.