we propose to observe in the lws01 and sws01 aot modes a selected number oh/ir stars. the main purpose is to search for silicate and water ice ir bands in those circumstellar envelopes. shapes and peak positions of the bands are strongly sensitive to the structure of responsible material. the structure depends on the thermal history and/or on the energetic processes (e.g. ion processing) of the dust grains and of the ice mantles on them. physical processes governing the birth and evolution of those grains might then be clarified.
Instrument
LWS01 , SWS01
Temporal Coverage
1996-10-19T03:49:44Z/1996-10-19T04:34:26Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's 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.
European Space Agency, 1999, Amorphous Vs Crystalline Water Ice Ice Structure In Circumstellar Envelopes, 1.0, European Space Agency, https://doi.org/10.5270/esa-8gjy6fi
