we propose to obtain low resolution mid-ir spectra of a sample spanning the temperature range of the coolest known m-dwarfs (teff = 3000k - 2000k). iso is uniquely suited for obtaining these observations, as the features of most interest in the mid-ir spectra of these stars (h20, co, co2 ch4) fall in the middle of the wavelength regions made inaccesible by the earth.s atmosphere. these observations, made for the first time in the spectral range of the atmospheric 'walls., will provide essential new data for the next generation of atmospheric models. this will allow them to be brought in line for the first time with observations -- allowing a meaningful teff scale to be constructed for the faintest m-dwarfs, and more importantly, for brown dwarf candidates.
Instrument
PHT40
Temporal Coverage
1996-03-30T11:20:56Z/1996-11-30T00:37:38Z
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.
