Hidden Dust in the Core-Collapse Supernova Remnant E0102

We propose to map emission from cold (<30 K), newlyformed dust in the ejecta of the corecollapse supernova remnant 1E 0102.27219 (E 0102) using Herschel PACS observations. E 0102 is a key object for understanding supernova dust production: it is one of few remnants where we have clear evidence of dust formation from midIR observations of virgul10^3 solar masses of hot dust in the reverse shocked ejecta. A large fraction of the newlyformed dust, however, may be located in the central, unshocked ejecta and its cold temperatures have kept it hidden at midIR wavelengths thus far. Observations with PACS at 70, 100 and 160 microns have the sensitivity and angular resolution to measure the mass of dust in the unshocked ejecta of E 0102 for the first time. With the observations proposed here, we will either discover a reservoir of cold dust in E 0102 or provide a direct counterexample to recent theoretical and observational studies that suggest supernovae are important sources of ISM dust. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]