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Es werden Posts vom Januar, 2026 angezeigt.

Our seventh paper on CY Aquarii

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 tl;dr - In 2008 we started monitoring the star CY Aquarii, a pulsating variable with a remarkably small period of ~90 min and a > 0.7 magnitudes amplitude. Together with Prof. Dr. Christiaan Sterken from Vrije Universiteit Brussel, we recently published data tables and findings from the 2022-2024 observing seasons in our seventh scientific paper.  It is now common knowledge that among all the stars in the sky the students of the Cusanusgymnasium Bruneck have one undisputed favourite: a tiny little speck of light in the constellation of Aquarius with the unpretentious designation CY. The latest Gaia measurements put it at a distance of 1,367 light years, hence, despite being hotter, bigger and brighter than the Sun, to us it appears ~100 times dimmer than the faintest stars visible to the unaided eye. Yet, its remarkable property to change its brightness fast (within ~90 min) and considerably (~ doubling its energy output) secured it a special place in our hearts. Ind...