The response of chromospheric emission lines to flares on YZ Canis Minoris

Details The response of chromospheric emission lines to flares on YZ Canis Minoris The response of chromospheric emission lines to flares on YZ Canis Minoris

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...276..270w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 276, Jan. 1, 1984, p. 270-280.

Astronomy and Astrophysics

Astrophysics

12

Balmer Series, Chromosphere, Emission Spectra, Flare Stars, Stellar Flares, Stellar Spectra, Continuous Spectra, H Alpha Line, Solar Flares, Spectral Line Width, Stellar Luminosity, Ubv Spectra

Scientific paper

Six flares of the dMe star YZ CMi have been observed with simultaneous photometry and high-dispersion, time-resolved spectroscopy.The spectra have temporal resolutions of 3 minutes with spectral resolutions of 0.24 Å. The largest observed flare had a U band amplitude of 1.5 mag. Hα and Hβ line profiles did not broaden during any of the observed flares, although the line center intensity increased by over a factor of 2 during some flares. After the initial increase in intensity, the emission line strength decreases but remains at enhanced levels for hours following U band flares. The Hα flare luminosity and total energy are compared to corresponding properties of solar flares.

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