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@article{2412800, author = {Ramezani, Tahereh and Paunzen, Ernst and Piecka, Martin and Kajan, Michal}, article_number = {2024}, keywords = {radiative transfer; convection; Hertzsprung–Russell and colour–magnitude diagrams; open clusters and associations: general}, language = {eng}, issn = {1313-2709}, journal = {Bulgarian Astronomical Journal}, title = {A New Approach to Find the Böhm-Vitense gap}, url = {https://ui.adsabs.harvard.edu/abs/2024arXiv240109264R/abstract}, volume = {41}, year = {2024} }
TY - JOUR ID - 2412800 AU - Ramezani, Tahereh - Paunzen, Ernst - Piecka, Martin - Kajan, Michal PY - 2024 TI - A New Approach to Find the Böhm-Vitense gap JF - Bulgarian Astronomical Journal VL - 41 IS - 2024 SP - 3-18 EP - 3-18 PB - Institute of Astronomy and NAO SN - 13132709 KW - radiative transfer KW - convection KW - Hertzsprung–Russell and colour–magnitude diagrams KW - open clusters and associations: general UR - https://ui.adsabs.harvard.edu/abs/2024arXiv240109264R/abstract N2 - This paper discusses the Böhm-Vitense gap, a gap in the colours of stars that occurs when the atmosphere changes from radiative to convective in deep layers. We are using different algorithms for detecting gaps in colour-magnitude diagrams (CMDs), including the k-nearest neighbours (k-NN) and UniDip algorithms. We propose using a combination of the k-NN algorithm and the UniDip algorithm and manual verification to identify gaps unlikely to be of a statistical origin. Using the Gaia photometric system, i.e. BP − RP, we took the data of 130 star clusters and searched for gaps in the ranges of 0.40 to 0.47 mag, and 0.56 to 0.60 mag, respectively. We analysed all data statistically and identified the gaps in the individual clusters. Finally, we applied the kernel density estimator to see how the gaps are distributed. ER -
RAMEZANI, Tahereh, Ernst PAUNZEN, Martin PIECKA and Michal KAJAN. A New Approach to Find the Böhm-Vitense gap. \textit{Bulgarian Astronomical Journal}. Institute of Astronomy and NAO, 2024, vol.~41, No~2024, p.~3-18. ISSN~1313-2709.
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