An estimate of the total chromospheric, transition region and coronal radiative losses in late-type stars

Details An estimate of the total chromospheric, transition region and coronal radiative losses in late-type stars An estimate of the total chromospheric, transition region and coronal radiative losses in late-type stars

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...214..258d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 214, no. 1-2, April 1989, p. 258-260.

Astronomy and Astrophysics

Astrophysics

20

Chromosphere, Late Stars, Stellar Coronas, Stellar Radiation, Emission Spectra, H Alpha Line, Heao 2, Iue, X Rays

Scientific paper

An estimate is made of the total radiative losses between 10,000 and 100 million K in several late-type stars. Using a relationship between the CIV 1548-A line flux and the total power losses in the atmosphere above 10,000 K developed for solar plasmas, it is shown that this relation also holds for these stars. For the active dMe and dKe stars, total radiative losses of 30-40 Merg/sq cm sec above 10,000 K are calculated, being slightly greater than that calculated for the sun if it were covered by active regions.

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