the outer photospheres and inner regions of the circumstellar shells of agb stars, both o rich and c rich, will be explored by studies at relatively high spectral resolution of a number of molecular bands and forbidden atomic lines. the aim is to establish more reliable abundance criteria for these regions and gain further insight into their physical and chemical conditions. this will also result in more accurate estimates of mass loss rates from co line observations at millimetre wavelengths, as well as deeper understanding concerning the mass loss mechanisms.
Instrument
LWS02 , SWS02 , SWS06
Temporal Coverage
1996-05-19T14:30:29Z/1996-12-07T03:14:32Z
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.
