|Shock Chemistry and Dust Processing in Interacting Supernova Remnants
|Supernova remnants interacting with dense moelcular clouds provide astroc-hemical laboratories to study heating and cooling of the dense ISM, shock chemistry, destruction and sputtering of dust, and the reformation of molecules. Water is expected to be a major coolant for shocks into dense gas, yet the number of remnants in which IR lines of hydroxyl and water are detected is very limited. We propose Herschel PACS, SPIRE and HIFI observations of three remnants with particularly high shocked gas densities, high dust and IR line luinosities, and extreme ionization environments. The scientific objectives of this proposal are: (1) to determine the abundance and excitation of oxygen-bearing molecules, (2) to study the oxygen chemistry in dense molecular gas shocked by powerful supernova remnant blast waves, and (3) to directly measure dust processing and constrain the effects of dust on shocks and oxygen chemistry.
|Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2013, OT1_jhewitt_1, SPG v14.2.0. https://doi.org/10.5270/esa-svham6q