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Red giant component of the recurrent nova T Coronae Borealis

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arxiv 2504.06029 v1 pith:QKHA7F3Y submitted 2025-04-08 astro-ph.SR

R. K. Zamanov , D. Marchev , V. Marchev , M. Moyseev , G. Yordanova , J. Marti , M. F. Bode , K. A. Stoyanov This is my paper · ORCID
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keywords giantabsolutebandmagnitudenovarecurrentv-bandapparent
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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 of T CrB apparent and absolute V-band magnitudes m_V = 10.17 +/- 0.06 and M_V = +0.14 +/- 0.08, respectively. At the maximum of the ellipsoidal variation when these values are obtained, its absolute V-band magnitude is similar but fainter than the typical M4/5III giants. The data are available on : zenodo.org/records/15174720

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