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astro-ph.SR2026
Evolution of a long-period Cataclysmic Variable from the viewpoint of the donor star: the case of SDSS J085210.48+783246.6
G. Tovmassian, D. Belloni, I. Mora Zamora +8
Cataclysmic variables were long considered to be close binaries consisting of a white dwarf and a Roche-lobe-filling, near-zero-age main-sequence (ZAMS) red or brown dwarf. Recent…
astro-ph.SR2023
New Spectroscopy of U Gem
J. Echevarría, S. H. Ramírez, M. Fuentes +3
We present new optical spectroscopic observations of U Geminorum obtained during a quiescent stage. We performed a radial velocity analysis of three Balmer emission lines yielding…