Interstellar Medium, Dust and Extinction

Details Interstellar Medium, Dust and Extinction Interstellar Medium, Dust and Extinction

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..374..325b&link_type=abstract

From Stars to Galaxies: Building the Pieces to Build Up the Universe. ASP Conference Series, Vol. 374, proceedings of the confer

Physics

Scientific paper

Anomalous extinction curves still exist in our own Galaxy. In this paper we aim at analysing the behavior of some extinction curves in order to shed light into both the properties of the dust and the physical properties of their environments. We extended the analysis of tet{gbar_Baetal01} by adding the infrared data from 2MASS catalog. 84 lines of sight (i.e. ≃ 11%) have been selected which deviate at 2σ level from the extinction law corresponding to the best-fit "normal" R_V value. 32% of such a sub-sample shows deviations larger than 3σ level. The results derived from extinction models are discussed.

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