An Investigation of the Largest Flares in Active Cool Star Binaries with ALEXIS

Details An Investigation of the Largest Flares in Active Cool Star Binaries with ALEXIS An Investigation of the Largest Flares in Active Cool Star Binaries with ALEXIS

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nasa.reptw....s&link_type=abstract

Technical Report, NASA/CR-1998-206897; NAS 1.26:206897 Advanced Technology Center

Physics

Attitude (Inclination), Cool Stars, Surveys, Stellar Atmospheres, Stellar Temperature, Counting, Exposure, Telescopes, Vignetting, Stellar Spectra, Stellar Envelopes

Scientific paper

After a long delay due to the initial problems with the ALEXIS attitude control, the heroic efforts on the part of the ALEXIS satellite team enabled us to carry out this survey. However, the combination of the higher than expected and variable background in the ALEXIS detectors, and the lower throughput of the ALEXIS telescopes resulted in no convincing detections of large flares from the active binary systems. In addition, vignetting-corrected effective exposure times from the ALEXIS aspect solution were not available prior to the end of this contract; therefore, we were unable to convert upper limits measured in ALEXIS counts to the equivalent.

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