Extinction

Tokyo Gagukei University provide color excess and dust extinction maps based on the Digitized Sky Survey I (DSS-1, since December 2005), and on the 2MASS Point Source Catalog (2MASS PSC, since April 2010).

CADE currently only serves a Healpix representation of the E(J-H) color excess map and the associated weights. Additional maps from the Tokyo Gagukei archive will become available soon.

A detailed description of the methods used to determine the color excess and extinction in the Tokyo Gagukei maps can be found in the papers:

• 'Atlas and Catalog of Dark Clouds Based on Digitized Sky Survey I', Dobashi, K et al. 2005, PASJ, 57, S1 http://adsabs.harvard.edu/abs/2005PASJ...57S...1D
• 'Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey', Dobashi, K. 2011, PASJ, 63, S1 http://adsabs.harvard.edu/abs/2011PASJ...63S...1D
• 'Atlas and Catalog of Dark Clouds Based on the 2 Micron All Sky Survey. II. Correction of the Background Using the Besançon Galaxy Model', Dobashi K. et al. 2013, PASJ, 65, 31 http://adsabs.harvard.edu/abs/2013PASJ...65...31D

Data in the WCS format can be downloaded here:

• http://darkclouds.u-gakugei.ac.jp/

Maps: http://cade.irap.omp.eu/documents/Ancillary/AV/Av_1_2048.fits

Weights: http://cade.irap.omp.eu/documents/Ancillary/AV/Av_1_2048_weight.fits