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2025-11-28
Paper on KIC 2831097 published in A&A
Our paper on KIC 2831097 has been published in Astronomy & Astrophysics The professional–amateur collaboration led by GEOS investigated the RR Lyrae variable KIC 2831097, once considered a strong candidate for belonging to a binary system. Using spectroscopic observations with the FIES instrument at the Nordic Optical Telescope and complementary photometry from Gaia, TESS, and...
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2025-08-20
GEOS Celebrates 50 Years at Nantes 2025
A milestone gathering marking five decades of collaboration and discovery in variable star astronomy. In April 2025, the European Group on Stellar Observations (GEOS) gathered in Nantes, France, to celebrate its fiftieth anniversary. This in-person meeting marked a long-awaited reunion after the last physical congress in Valencia in 2019 and several years of virtual or...
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2023-06-05
GEOS Meeting Held During EVS5 in 2023
The GEOS meeting held in Barcelona during the 5th European Variable Stars observers meeting (EVS5) brought together members to discuss governance, data projects, and the modernization of the group’s digital presence. The meeting took place on May 28, 2023, at CosmoCaixa in Barcelona, following the EVS5 conference co-organized by GEOS and the Agrupació Astronòmica de...
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