we propose to observe the zodiacal background with sws aot6 along four sightlines to study the solid-state chemistry of the solar system dust disk at unprecedented resolution. sws is sensitive to the thermal emission down to at least 0.1 jy, and we discovered narrow (probably crystalline) emission features overlying this continuum in a cus calibration observation even at marginal s/n. these features are out of the reach of p40 and c04 spectral resolutions, and have not been confidently identified with laboratory transmission spectra or astroidal features. sightlines will include high, intermediate, and low ecliptic inclinations to separate asteroidal and cometary dust components, avoiding the galactic plane itself. spectral coverage is chosen to cover our current detections, the temperature-sensitive region of the thermal emission, and the major silicates detected in closely-related environments. at the required s/n, each sightline will require 2.5 hours. we request a total of 10 hours for this project, which will substantially augment ongoing p40 and c04 programmes and benefit studies of the dust disks around planet-forming stars.
Instrument
SWS06
Temporal Coverage
1998-02-28T18:37:35Z/1998-02-28T21:03:54Z
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, Sws Observations Of The Zodiacal Light: Solar System Mineralogy, 1.0, European Space Agency, https://doi.org/10.5270/esa-ztvlaat
