On the number of flare stars in the Pleiades region

Details On the number of flare stars in the Pleiades region On the number of flare stars in the Pleiades region

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cha%26a..21..254w&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 21, Issue 2, p. 254-254.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Mirzoyan et al. using Jones' estimates of proper motion membership probabilities, found that non-member flare stars showed a strong concentration towards the centre of the region. It is shown that this result is due to 1) Jones' estimates being generally too low, 2) the estimates for stars in the outer parts begin somewhat too high and 3) large observing errors near the centre. We prefer to use the membership estimates by Stauffer et al. based on a more complete sample. Regarding stars with the Stauffer membership probabilities greater than 0.5 as members, we re-calculated the fraction of flare stars among member red dwarfs. We found the fraction increases with the V magnitude until Mv ~ 8.0 when it levels off at around 64% and continues right to the sample limit of Mv ~ 11.5.

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