3 papers
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.SR2025
Interstellar extinction toward MWC 148
R. Zamanov, I. Stateva, J. Marti +2
We analyse high resolution optical spectra of MWC148 (optical counterpart of the gamma-ray source HESS J0632+057) obtained at Observatoire de Haute Provence and Rozhen Observatory.…
astro-ph.SR2024
Pre-outburst signal in the light curves of the recurrent novae RS Oph and T CrB
R. K. Zamanov, V. Marchev, J. Marti +1
Pre-outburst signal (a decrease of the optical brightness) just before the outburst is clearly detected in the observations of the T CrB obtained before and during the 1946 outburs…