Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...162..151a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 162, no. 1-2, July 1986, p. 151-156.
Astronomy and Astrophysics
Astrophysics
Astronomical Photometry, Flare Stars, Stellar Flares, Chromosphere, Correlation Coefficients, Light Curve, Regression Analysis, Stellar Atmospheres
Scientific paper
Characteristics of the four types of flares observed during the 184 events that were observed on the flare star EV Lac in the period 1967-1980 are analyzed. The data include the duration and magnitude of each event, the mean rate of luminosity and apparent magnitude increases, the integrated flare intensity over the whole event, and time histograms of intensity levels of the events. The flares were distributed into 49 type IV events, 71 type III events, 38 type II events and 25 type I events. Intensities were highest in type II events, and the extremes of other distinguishing characteristics were distributed among the other events, with some having correlations exceeding the 95 percent level. The differences were sufficiently pronounced to conclude that the individual type of flare event must be considered in future analyses, rather than considering all flare events as a uniform database.
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