A New Approach to Find the Böhm-Vitense gap

J 2024

A New Approach to Find the Böhm-Vitense gap

RAMEZANI, Tahereh, Ernst PAUNZEN, Martin PIECKA and Michal KAJAN

Basic information

Original name

A New Approach to Find the Böhm-Vitense gap

Authors

RAMEZANI, Tahereh (364 Islamic Republic of Iran, belonging to the institution), Ernst PAUNZEN (40 Austria, belonging to the institution), Martin PIECKA (703 Slovakia) and Michal KAJAN (703 Slovakia, belonging to the institution)

Edition

Bulgarian Astronomical Journal, Institute of Astronomy and NAO, 2024, 1313-2709

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Bulgaria

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL URL

Impact factor

Impact factor: 0.400 in 2022

Organization unit

Faculty of Science

UT WoS

001266892300001

Keywords in English

radiative transfer; convection; Hertzsprung–Russell and colour–magnitude diagrams; open clusters and associations: general

Abstract

V originále

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.

Links

GA23-07605S, research and development project

Name: Osud galaktických otevřených hvězdokup

Investor: Czech Science Foundation, The fate of Galactic open clusters

Citovat

RAMEZANI, Tahereh, Ernst PAUNZEN, Martin PIECKA and Michal KAJAN. A New Approach to Find the Böhm-Vitense gap. Bulgarian Astronomical Journal. Institute of Astronomy and NAO, 2024, vol. 41, No 2024, p. 3-18. ISSN 1313-2709.

@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.

Detailed Information on Publication Record