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A New Technique for Precise Stellar Photometry: Application to Small-Scale Activity of EV Lacertae

Published online by Cambridge University Press:  12 April 2016

B.E. Zhilyaev
B.E. Zhilyaev*
Affiliation:
Main Astronomical Observatory, National Academy of Sciences of Ukraine, Kiev 252650, Ukraine

Abstract

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A new prefiltering technique (PFT) for precise stellar photometry is described. It has been proved that the prefiltered and added high-time resolution data provide an increase in S/N ratio by factors 1.3 — 1.7 in comparison with simple integration. The PFT allows to detect event amplitudes which are comparable to that caused by counting statistics. Adopting the PFT, our observations reveal small-scale flare events in the subsecond range in EV Lac.

Type
Flares in Late-type Stars: Radio and Optical
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 133 - 134
Copyright
Copyright © Springer-Verlag 1995

References

Zhilyaev, B.E., Romaniuk, Ya.O., Svyatogorov, O.A., 1994, Kinemat. Phys. Celestial Bodies 10, No. 6 (in press)Google Scholar