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A&A Supplement Series, Vol. 125, November I 1997, 511-521

Received March 8; accepted February 12, 1997

Radio burst statistics for M dwarf flare stars

M. Abada-Simontex2html_wrap1145 and M. Aubiertex2html_wrap1147

tex2html_wrap530  ARPEGES/URA CNRS 1757, Observatoire de P aris, 92190 Meudon, France
tex2html_wrap530  Universit\151 de Versailles Saint-Quentin-en-Yvelines, France


We present a critical analysis on the number of bursts near 21 cm from nine dMe flare stars of the solar neighborhood as reported in the literature. We compare our findings with the number of bursts detected with the Arecibo radiotelescope between 1989 and 1993, using a very reliable method to discriminate between stellar and artificial emissions. We compare the rates of radio bursts per hour inferred from both this Arecibo campaign and the literature to rates of optical flares found in the literature. We also compare the nine stars to each other, and the Arecibo results to radio surveys of two open clusters.

keywords: stars: flare; late type; activity -- radio continum: stars -- methods: statistical

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