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Infrared Spectra of Dust Around Other Stars Show Mineralogical Features Diagnostic of Their Composition

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Infrared Spectra of Dust Around Other Stars Show Mineralogical Features Diagnostic of Their Composition Infrared Spectroscopy of Extraterrestrial Materials William T. Reach, Universities Space Research Association, SOFIA Associate Director for Science Mehmet Yesiltas, University of Central Florida, graduate student George Rossman, California Institute of Technology, Professor of Mineralogy HD 113766 HD 172555 Infrared spectra of dust around other stars show mineralogical features diagnostic of their composition. This infrared spectrum of dust around a white dwarf star shows prominent silicate emission features diagnostic of tits composition. Two astronomical spectra of debris around main sequence stars, as analyzed by C. Lisse et al. (2008, 2009 ApJ). HD 113766 debris was ascribed to material similar to an S-type asteroid We measured infrared spectra of meteorites of all classes, in order to form a comparison Terrestrial Craters, Tektites database for understanding how material Some natural but single-mineral specimens Asteroidal around other stars compares to debris in the were measured for comparison. Solar System. Minerals Cometary Lunar Some carbonaceous chondrite meteorites have a near-infrared feature from water of hydration. We have attempted to remove the water by heating but it remains present at 200 C and is likely from the parent body. And now, a bit of publicity for the project that takes most of my time. Water of Hydration SOFIA update Formation of Stars Galaxies and the Plans: We are writing a paper describing Interstellar Medium Planetary Science and Planets Galactic Center Two special issues of SOFIA papers have the survey observations, and we will follow been published, one in Astrophysical Journal for mid-infrared imaging with up two findings using specially-selected FORCAST, the other in Astronomy and Astrophysics for submm spectroscopy samples recently approved by the Meteorite with GREAT. Working Group. This includes a set of Cycle 1 carbonaceous chondrites for water of Observations will take place from 2012- hydration, and a set ordinary chondrites for Nov through the end of 2013. shock signatures. Cycle 2 The next Call will be issued in April 2013 with due date in late June 2013, for observations during calendar year 2014. .
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