Herschel imaging of SNR G292.0+1.8: Cas A.s older cousinquestionMark

It is wellknown that supernovae play a key role in creating and distributingelements throughout the universe, but less wellknown is their contributionto the overall budget of dust in the ISM. Theoretical models suggest that corecollapse supernovae should produce large quantities of dust, butobservational evidence for this is still debated. Even if significantquantities of dust are produced, does it survive the passage of the reverseshock to enter the ISM? Does the forward shock destroy all dust that it encounters? Near and midIR observations with Spitzer and AKARI have begun to answer these questions, but the long wavelength cameras of Herschel are necessary for a complete picture. We propose detailedobservations of G292.0+1.8, a large Galactic supernova remnant (SNR) that has been called the older cousin of Cassiopeia A. One of the few known oxygenrich remnants, G292 is a 3000 year old textbook example of a corecollapse SNR expanding into its own circumstellar medium (CSM), the wind of a red giant. It is one of the most wellstudied SNRs at all wavelengths, from radio to Xrays. At 8. in diameter, it is large enough for the emission from the forwardshock CSM to be wellseparated from that of the reverseshocked ejecta, yet it is still small enough to be fully covered by Herschel in a reasonably small amount of time. We will obtain PACS and SPIRE imaging of the entire remnant. PACS observations will be sensitive to forwardshocked material, while SPIRE data will tell us whetherlarge amounts of ejecta dust are present in the remnant. We will use thefarIR data in conjunction with Xray and optical data to obtain a completepicture of the dynamical evolution of the remnant, and advance our understanding of the nature of dust in the universe. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]