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...