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Spectral and Photometrical Investigation of EV Lac in Different States with High Time Resolution

Published online by Cambridge University Press:  12 April 2016

G.M. Beskin ,
S.N. Mitronova  and
I.P. Panferova
G.M. Beskin
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Circassia, 357147, Russia
S.N. Mitronova
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Circassia, 357147, Russia
I.P. Panferova
Affiliation:
Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Circassia, 357147, Russia

Extract

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Spectroscopic and photometric monitoring of the flare star EV Lac was carried out with the 6-m telescope of the Special Astrophysical Observatory on the following 3 nights: 1993 September 10 (18:54-20:16 UT), 11 (17:46-20:03 and 21:25-22:16 UT) and 12 (19:46-20:08 and 21:23-22:21 UT).

We used the observation method described in detail by Berdyugin et al. (1994) and Alekseev et al. (1994). Observations were carried out with the 1024 channel TV scanner (Drabek et al. 1986) installed on the spectrograph SP-124 at the Nasmyth focus which covered a wavelength range 3480-5530Å with a spectral resolution 2Å per channel. Exposure times were 3 — 5 minutes, the signal/noise ratio was 20 at 3500Å and 40 at 5500Å and dead time between exposures was 10 — 15 sec. 92 spectra were obtained in total.

Type
Flares in Late-type Stars: Radio and Optical
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 85 - 86
Copyright
Copyright © Springer-Verlag 1995

References

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