Solid state features in the Herschel-PACS-range

Computer Science

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Laboratory: Methods, Circumstellar Matter, Infrared: Stars

Scientific paper

The Herschel-PACS instrument will enable spectroscopic observations of dusty environments in the 57 to 210 μm range with unprecedented sensitivity and a spectral resolution of 1000-4500. While the ISO misson opened the field of asteromineralogy at shorter wavelengths, Herschel-PACS will do this at longer ones. Already available laboratory data are sometimes incomplete in the far infrared. Hence, the knowledge about the properties of potential carriers of FIR resonance bands is limited. A reliable inventory of solid state dust features is thus an essential ingredient for the preparation and and interpretation of Herschel-PACS observations. We present our efforts in this field and present examples of dust features at wavelengths larger tham 57 μm, such as those of silicates (fosterite, fayalite and diopside), graphite and ices.

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