recent photometry and spectroscopic data leads support to the theoretical expectation that some m dwarfs have stellar winds several orders of magnitude greater than the solar value. if so, the wind is expected to have a power-law spectrum. present observational data from iras, jcmt and the vla suggests such a spectrum, for several active dwarf m stars. the major problem with this data is its poor quality above 25um, and for many m dwarfs only upper limits are possible. iso photometric and spectroscopic data can improve this situation, and combined with new millimeter data with scuba on the james clerk maxwell telescope (jcmt) major advances are expected. confirmation of this power-law spectrum has important implications not only for evolution and interstellar medium physics but also whether discrete magnetic events such as coronal mass ejections can contribute to the coronal dynamics of active dwarfs and thus to their mass loss rates.
Instrument
PHT03 , SWS01
Temporal Coverage
1996-03-31T05:34:07Z/1997-09-01T06:09:47Z
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.
