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J/MNRAS/368/1392 Flare variability in the close binary FL Vir (Pettersen+, 2006)
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Beginning of ReadMe :J/MNRAS/368/1392 Flares of the close binary FL Vir (Pettersen+, 2006)
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Flare variability in the close binary FL Vir.
Pettersen B.R.
<Mon. Not. R. Astron. Soc., 368, 1392-1394 (2006)>
=2006MNRAS.368.1392P
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ADC_Keywords: Stars, flare ; Stars, double and multiple
Keywords: techniques: photometric - binaries: close - stars: flare
Abstract:
The results of U-filter flare monitoring of the binary flare star
FL Vir = Wolf 424 is presented. 57 flares with energies between
2x10^28^ and 2x10^31^erg were recorded in 20h of observation. The
properties of flare occurrence and flare time-scales are analysed, and
the flare activity level in 1980 April is determined to be
L_f_(U)=8.0x10^26^erg/s. This is larger than previously published
results and may indicate a variation in the flare activity level on a
time-scale of years. An analysis of existing data indicates that the
flare activity level correlates with the relative orbital positions of
the stars.
Description:
FL Vir = Wolf 424 = Gliese 473 AB was observed on seven nights in 1980
April with the 2.1-m Struve reflector at McDonald Observatory. A
computer-controlled high-speed photometer was used to collect data
through eight filters. Here, we analyse only the U-filter data.
Objects:
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RA (2000) DE Designation(s)
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12 33 17.5 +09 01 14 FL Vir = Wolf 424
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