The flare activity of the red dwarf binary Gliese 277 AB

Details The flare activity of the red dwarf binary Gliese 277 AB The flare activity of the red dwarf binary Gliese 277 AB

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220..218h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 218-220.

Astronomy and Astrophysics

Astrophysics

Binary Stars, Late Stars, Red Dwarf Stars, Stellar Flares, Balmer Series, Calcium, H Lines, Line Spectra

Scientific paper

Both red dwarf components of the system Gliese 277 AB show the Ca II HK and H I Balmer lines in emission. Extensive photoelectric monitoring has revealed flare activity in the bright star but not in the faint. Estimates of an upper limit for the flare activity level of the faint star place it among the very inactive dM stars despite its prominent emission lines. The activity level of the bright star is typical for its spectral class.

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