IRAS observations of chromospherically active dwarf stars

Details IRAS observations of chromospherically active dwarf stars IRAS observations of chromospherically active dwarf stars

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98..290t&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, July 1989, p. 290-296. Research supported by NASA.

Astronomy and Astrophysics

Astronomy

12

Chromosphere, Dwarf Stars, Infrared Astronomy Satellite, Late Stars, Stellar Luminosity, Emission Spectra, Far Infrared Radiation, Main Sequence Stars, Stellar Activity, Stellar Flares

Scientific paper

Far-infrared observations of chromospherically active, spotted, and plage stars in the dF7-dk7 spectral range are examined. Most (75 percent) of the stars have detectable 12-micron fluxes, and 50 percent of them have 25-micron emission. The 12-micron luminosity, L(12), is found to be in the range of 1.5-13 x 10 to the 30th ergs/s and to comprise only 0.2-0.5 percent of the star's total luminosity, L(bol). The present work extends to earlier spectral types and higher stellar luminosities the L(12) vs L(bol) relationship noted previously for late-type active dwarfs (K5-M5).

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