A spectroscopic flare of YZ Canis Minoris

Details A spectroscopic flare of YZ Canis Minoris A spectroscopic flare of YZ Canis Minoris

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231l..77m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 231, July 15, 1979, p. L77-L81. Research supported by the Weizmann F

Astronomy and Astrophysics

Astrophysics

14

Emission Spectra, Flare Stars, Optical Emission Spectroscopy, Stellar Spectra, Doppler Effect, Dwarf Stars, Iron, M Stars, Magnesium, Radial Velocity

Scientific paper

Observations of a spectroscopic flare in YZ Canis Minoris are reported. Emission lines of Mg I, Fe I, and Fe II were found in the spectral region 5090-5350 A. The intensity of the emission lines declined only slightly over a span of 2 hours. No significant radial-velocity difference was found between the emission and absorption lines. The turbulent velocity dispersion was less than 20 km/s. Upper limits of 7500 and 15,000 gauss can be placed on the longitudinal and transverse magnetic fields. The equal intensities of the Mg I b lines imply that the emitting region was optically thick. The intensity ratios did not change with time.

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