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Flare Star Observations in the Praesepe Region

Published online by Cambridge University Press:  12 April 2016

I. Jankovics
I. Jankovics*
Affiliation:
Konkoly Observatory, H-1525 Budapest, XII

Extract

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In a program of systematic search for flare stars in clusters and associations we have carried out a photographic survey in the region of Praesepe. The previously obtained interesting results in the Pleiades cluster and the Orion association stimulated us to continue the work of Haro (1968) and Rosino (1966) in Praesepe. The importance of observations in this cluster is obvious if we consider the following circumstances:

  1. 1. Praesepe and Pleiades have nearly the same distance from the Sun, 160 and 125 pc, respectively.

  2. 2. There exists a difference in age between the 2 clusters of at least one order of magnitude.

  3. 3. The use of Schmidt telescopes allows observations in large cluster regions.

A great number of observational data are desirable for comparison of flare activity in the regions of Pleiades and Praesepe.

Type
Part I: Young Objects
Information
International Astronomical Union Colloquium , Volume 42: The Interaction of Variable Stars with their Environment , 1977 , pp. 120 - 125
Copyright
Copyright © Veröff. Der Remeis-Sterwarte 1977

References

Ambartsumian, V., 1969, Zvezdy, Tumannosty, Galaktiky, Jerevan, Izd. Akademii Nauk ASSR Google Scholar
Artjukhina, N., 1962, Astronomicheskij Zhurnal, 39, 1050 Google Scholar
Haro, G., 1968, Stars and Stellar Systems, Vol. VII. page 141 The university Press of Chicago Google Scholar
Jankovics, I., 1973, Information Bulletin on Variable Stars, No. 839 Google Scholar
Rosino, L., 1966, Contr. Asiago Obs. No. 189 Google Scholar