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A spectroscopic flare of YZ Canis Minoris (1979)

Schommer, R. A. ; Mochnacki, S. W.

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Publication Date: 2019-06-27

Description: 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.

Keywords: ASTRONOMY

Type: Astrophysical Journal; vol. 231

Format: text

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