Modelling Interstellar Extinction in Three Dimensions

Details Modelling Interstellar Extinction in Three Dimensions Modelling Interstellar Extinction in Three Dimensions

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..471m&link_type=abstract

SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret

Astronomy and Astrophysics

Astrophysics

Scientific paper

Interstellar extinction remains a serious obstacle for the observation of stars in the Milky Way, and for interpreting these observations in terms of Galactic Structure. We have developed a technique that estimates the three dimensional extinction in the Galactic plane. The colour distribution (J-K) of stars from the 2MASS survey are compared to that of stars from the Besançon model of the Galaxy, to which we do not add the effects of extinction. If the luminosity function and the density laws of the different populations are well modeled, any differences in the colour distributions will be due to interstellar extinction. After having described the method, we will show the results for several different regions in the Galactic plane.

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