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Two-colour observations of spikes and flares by high time resolution

Published online by Cambridge University Press:  23 September 2016

V.P. Zalinian ,
A.A. Karapetian  and
H.M. Tovmassian
V.P. Zalinian
Affiliation:
Byurakan Astrophysical Observatory Armenian Academy of Sciences, USSR
A.A. Karapetian
Affiliation:
Byurakan Astrophysical Observatory Armenian Academy of Sciences, USSR
H.M. Tovmassian
Affiliation:
Byurakan Astrophysical Observatory Armenian Academy of Sciences, USSR

Extract

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Observations of flare stars with high time resolution permit to register spiky type flares and also to study in detail bright curves of flares. In Byurakan observatory observations of EV Lac have been made with 0.1 s time resolution simultaneouslyin two filters “U” and “B” [1-3]. These observations permited to detect flares of a burst type (Fig.1) and also to reveil multipeak structure of long duration flares. It is necessary to stress that simultaneous observations in two colours increas appresiably the thrustworthiness of the registered spiky flares.

Type
I Flare Stars Optical Observations and Flare Statistics
Information
Symposium - International Astronomical Union , Volume 137: Flare Stars in Star Clusters, Association and Solar Vicinity , 1990 , pp. 33 - 34
Copyright
Copyright © Kluwer 1990 

References

1. Zalinian, V.P., Tovmassian, H.M. (1987), ‘Observations of spiky flares of BY Dra and EV Lac’, IBVS, No.2992.Google Scholar
2. Zalinian, V.P. (1988), ‘Simultaneous two-colour observations of the flare stars EV Lac in September 1987’, IBVS, No. 3142.Google Scholar
3. Tovmassian, H.M., Zalinian, V.P. (1988), ‘Simultaneous two-colour observations of stellar flares with a high time resolution’, Astrofizika, 28, 131–137.Google Scholar
4. Moffett, T.J. (1974), ‘UV Ceti flare stars: observational data’, Astrophis. J.Suppl.Ser., 273, 29, 1-42.Google Scholar
5. Panov, K.P., Piirola, V. and Korhonen, T., (1988), ‘Five-colour photometry of EV Lac flares’, Asron.Astrophys.Suppl.Ser., 75, 53, 53-65.Google Scholar