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1975•Symposium - International Astronomical UnionOpen access

High-Speed Photometry of Cluster Flare Stars

Marcello Rodono

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Abstract

Recent photoelectric observations made at Catania Observatory show a high occurrence of short-lived faint flares on the Hyades member II Tau (H II 2411). Its activity level turns out to be higher than for UV Cet-type stars of equal absolute luminosity. II Tau could represent a transition prototype between UV Cet-type flare star in the solar neighbourhood and cluster ones. The importance of coordinated photoelectric patrol of properly selected flare stars in clusters of different age is emphasized.

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What this paper is about

Recent photoelectric observations made at Catania Observatory show a high occurrence of short-lived faint flares on the Hyades member II Tau (H II 2411). Its activity level turns out to be higher than for UV Cet-type stars of equal absolute luminosity. II Tau could represent a transition prototype between UV Cet-type flare star in the solar neighbourhood and cluster ones. The importance of coordinated photoelectric patrol of properly selected flare stars in clusters of different age is emphasized.

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Available abstract

Recent photoelectric observations made at Catania Observatory show a high occurrence of short-lived faint flares on the Hyades member II Tau (H II 2411). Its activity level turns out to be higher than for UV Cet-type stars of equal absolute luminosity. II Tau could represent a transition prototype between UV Cet-type flare star in the solar neighbourhood and cluster ones. The importance of coordinated photoelectric patrol of properly selected flare stars in clusters of different age is emphasized.

Key concepts: Flare, Physics, Stars, Photometry (optics), Astrophysics, Flare star, Photoelectric effect, Observatory

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