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Far-Ultraviolet and Visible Observations of Flares on dme Stars

Published online by Cambridge University Press:  12 April 2016

G E Bromage ,
B E Patchett  and
K J H Phillips
G E Bromage
Affiliation:
Astrophysics Group, Rutherford Appleton Laboratory, Didcot, UK
B E Patchett
Affiliation:
Astrophysics Group, Rutherford Appleton Laboratory, Didcot, UK
K J H Phillips
Affiliation:
Astrophysics Group, Rutherford Appleton Laboratory, Didcot, UK

Abstract

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Four large flare events – one on each of the dMe stars UV Cet, AT Mic, EV Lac and EQ Peg – have been witnessed during a total of 17½ hours of far-UV (λλ1150-1950) IUE exposures. Some observational characteristics of these four events are compared. Two showed strong enhancements of chromospheric and transition-region line strengths. The other two did not, even though their visible flares were intense (ΔU ~ 2 mag). The brightest UV flare spectrum (EQ Peg) is contrasted with that of the largest solar flare seen from ‘Skylab’.

Type
Session II: Observed Activity in Red-Dwarfs
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 245 - 248
Copyright
Copyright © Reidel 1983

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