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astro-ph.SR2026
Is Mira B a low mass white dwarf?
R. K. Zamanov, V. Irincheva, B. Spassov +8
We report photometric observations in Johnson B and V bands of the short term variability (flickering) of Mira (omicron Ceti). The observations were performed during 7 nights in th…
astro-ph.SR2025
Red giant component of the recurrent nova T Coronae Borealis
R. K. Zamanov, D. Marchev, V. Marchev +5
We performed simultaneous V band photometry and spectroscopic observations of the recurrent nova T CrB and estimate the V band magnitude of the red giant. We find for the red giant…
astro-ph.SR2024
Size of the accretion disc in the recurrent nova T CrB
R. K. Zamanov, K. A. Stoyanov, V. Marchev +7
We present high resolution (0.06 A/px) spectroscopic observations of the recurrent nova T Coronae Borealis obtained during the last 1.5 years (September 2022 -- January 2024), with…