Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.178..149m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 178, Jan. 1977, p. 149-157. Research supported by the Research Corp.
Astronomy and Astrophysics
Astronomy
4
Astronomical Photometry, Dwarf Stars, H Beta Line, Stellar Luminosity, Stellar Spectra, Early Stars, Electrophotometry, Energy Transfer, Flared Bodies, Flares, Optical Scanners, Photosensitivity, Stellar Spectrophotometry
Scientific paper
Simultaneous high-speed photometry and photoelectric scanner observations of the H-beta line were obtained for five flare events, one a major flare on UV Ceti. The relative increase in the intensity of the H-beta line during the large flare was much greater than the relative continuum rise as measured both by the scanner and by broad-band photometric observations. In H-beta, the flare lasted nearly 30 times as long as in the continuum. Peak intensity in the H-beta line occurred later than the continuum maximum. The possibility of using emission-line observations to detect flare activity on early spectral-type stars (dK-dG) is discussed. Some speculations on the mechanism of flare production are indulged.
Evans Silvan D.
Ferland Gary
Moffett Thomas Joseph
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