Ultraviolet Extinction Curves in the Magellanic Clouds

Details Ultraviolet Extinction Curves in the Magellanic Clouds Ultraviolet Extinction Curves in the Magellanic Clouds

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.0904g&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #09.04; Bulletin of the American Astronomical Society, Vol. 33, p.799

Astronomy and Astrophysics

Astronomy

Scientific paper

We will present an analysis of dust properties in the Large and Small Magellanic Clouds (LMC & SMC) based on ultraviolet extinction curves. These curves were derived from IUE data for 19 sightlines in the LMC (Misselt, Clayton, & Gordon 1999, ApJ, 515, 128) and 4 sightlines in the SMC (Gordon & Clayton 1998, ApJ, 500, 816). In addition, we will present one new curve for the SMC based on HST/STIS data. For all the extinction curves, we have derived the RV values using 2MASS and DENIS near-infrared photometry combined with previous optical photometry. We will investigate how well the RV dependent relationship for dust extinction curves derived for the Milky Way dust (Cardelli, Clayton, & Mathis 1989, ApJ, 345, 245) reproduces the measured ultraviolet LMC and SMC extinction curves.

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