A New Approach to Find the Bohm-Vitense gap
- Author(s)
- Tahereh Ramezani, Ernst Paunzen, Martin Piecka, Michal Kajan
- Abstract
This paper discusses the Bohm-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.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Masaryk University
- Journal
- Bulgarian Astronomical Journal
- Volume
- 41
- No. of pages
- 16
- ISSN
- 1313-2709
- Publication date
- 07-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Keywords
- ASJC Scopus subject areas
- Astronomy and Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/958cb0e4-e8ff-4da7-8e17-7bfae961226e