we will carry out observations of the environment of the old (1901) classical nova gk per. our observational aims are to (i) map the extended emission around this object in four far-ir wavelengths, (ii) obtain lws spectra of eight of the brighter far-ir knots, (iii) map the immediate vicinity of the stellar remnant using cam and uir filters to determine the nature of the radiating grains in this region. our scientific objectives are (i) to determine which of two scenarios for the origin of the ejected material is appropriate, (ii) determine the nature of the grains emitting in the far-ir, (iii) measure the elemental abundances (cno) as a function of distance from the stellar remnant. realizing these objectives will allow us to attain our scientific goal of understanding the pre-cataclysmic variable evolution of gk per, and hence to throw light on the evolution of cataclysmic variables in general. note added during pdec entry. otac made an allocation of 7200 s of p2 time with a recommendation for the 90 and 160 micron maps. however the p2 time allocation is insufficient to make the two maps recommended by otac. in addition we feel that, while the 160 micron map is entirely new a 90 micron map must have lower priority as a 100 micron map (albeit at lower spatial resolution) is available. we therefore propose to use the p2 time allocated to obtain (i) a 160 micron map as recommended by otac and (ii) lws spectra of the two brightest 100 micron knots, which would be entirely new data. the remaining observations (including the 90 micron map), will be entered as p3.
Instrument
LWS01 , PHT22 , PHT32
Temporal Coverage
1997-09-14T11:34:16Z/1998-03-21T20:30:16Z
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.
