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Diagnostic possibilities of the Walrawen photometric system

Published online by Cambridge University Press:  23 September 2016

A. V. Berdyugin
A. V. Berdyugin*
Affiliation:
Crimean Astrophysical Observatory Nauchny Crimea 334413 USSR

Abstract

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Diagnostic possibilities of the Walraven photometric system to analyze the UV Cet type flare stars have been studied. It was shown that the Walrawen system marks out the hydrogen spectrum features better than the standard UBV system. Observations of the UV Cet flare of 1985 December 23, carried out in the Walraven system were analyzed with computed two-colour diagrams, temperature and gaseous density at the maximum of brightness were estimated.

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. 37 - 39
Copyright
Copyright © Kluwer 1990 

References

1. Lub, J. and Pel, J. W. (1977) ‘Properties of the Walraven VBLUW photometric system’ Astron. & Astrophys. 54, 137–158 Google Scholar
2. Grinin, V. P. and Katysheva, N. A. (1980) ‘Relative intensities of the hydrogen lines in the moving mediumes’ Bull.Crimean Astrophys. Obs. 62, 66–78 Google Scholar
3. Grinin, V. P. and Sobolev, V. V. (1977) ‘On the theory of the flare stars’ Astrophysics 13, 587–603 Google Scholar
4. Alekseev, N. L., Alekseeva, G. A. et al (1978) ‘Results of the astrophysical expedition of the USSR Academy of Sciences in Chile (1971 – 1973)’ Izv. Glav. Astron. Obs. Pulkovo 83, 4–147 Google Scholar
5. de Jager, C., Heise, J. et al (1989) ‘Coordinated observations of a large impulsive flare on UV Ceti’ Astron. & Astrophys. 211, 157–172 Google Scholar
6. Cristaldi, S. and Longitano, M. (1979) ‘The colour behaviour of nine flares of BY Dra, CR Dra, EV Lac and AD Leo variable stars' Astron. & Astrophys. Suppl. 38, 175–180 Google Scholar