the supernova remnant ic 443 provides a striking example of a shock wave impacting a molecular cloud, producing intense emission along several narrow boundaries or ridges. observational evidence suggests that these molecular shocks are either partially dissociating with the degree of dissociation varying from point to point or that there are multiple shocks, possibly a mixture of low-velocity, nondissociating c-shocks and higher-velocity, dissociating j- shocks. we propose observations of the si(25), siii(35), fei(24), feii(26,35), oi(63,145), and cii(158) fir fine-structure lines and the high-j co lines at selected positions throughout the remnant. these observations will coincide spatially with existing observations of h2, high-velocity hi, low-j co, h2co, hco+, hcn, cs, h51alpha, and oh and will serve as excellent discriminators of the various shock models which have been proposed.
Instrument
LWS02 , LWS04 , SWS01
Temporal Coverage
1998-02-27T23:32:52Z/1998-04-04T22:14:49Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
