| KUESS, Lukas, Ernst PAUNZEN, Nikola FALTOVÁ, Daniel JADLOVSKÝ, Matúš LABAJ, Marko MESARČ, Prapti MONDAL, Michal PRIŠEGEN, Tahereh RAMEZANI, Johana SUPÍKOVÁ, Kateřina SVAČINKOVÁ, Michaela VÍTKOVÁ, Caiyun XIA, Klaus BERNHARD a Stefan HÜMMERICH. Chemically peculiar stars on the pre-main sequence. Astronomy & Astrophysics. EDP Sciences, 2024, 25 s. ISSN 0004-6361. |
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@article{2412817,
author = {Kueß, Lukas and Paunzen, Ernst and Faltová, Nikola and Jadlovský, Daniel and Labaj, Matúš and Mesarč, Marko and Mondal, Prapti and Prišegen, Michal and Ramezani, Tahereh and Supíková, Johana and Svačinková, Kateřina and Vítková, Michaela and Xia, Caiyun and Bernhard, Klaus and Hümmerich, Stefan},
keywords = {Stars: chemically peculiar; Stars: pre-main sequence; Stars: variables: general; open clusters and associations: general; Hertzsprung-Russell and C-M diagrams},
language = {eng},
issn = {0004-6361},
journal = {Astronomy & Astrophysics},
title = {Chemically peculiar stars on the pre-main sequence},
url = {https://ui.adsabs.harvard.edu/abs/2024arXiv240508946K/abstract},
year = {2024}
}
TY - JOUR
ID - 2412817
AU - Kueß, Lukas - Paunzen, Ernst - Faltová, Nikola - Jadlovský, Daniel - Labaj, Matúš - Mesarč, Marko - Mondal, Prapti - Prišegen, Michal - Ramezani, Tahereh - Supíková, Johana - Svačinková, Kateřina - Vítková, Michaela - Xia, Caiyun - Bernhard, Klaus - Hümmerich, Stefan
PY - 2024
TI - Chemically peculiar stars on the pre-main sequence
JF - Astronomy & Astrophysics
PB - EDP Sciences
SN - 00046361
KW - Stars: chemically peculiar
KW - Stars: pre-main sequence
KW - Stars: variables: general
KW - open clusters and associations: general
KW - Hertzsprung-Russell and C-M diagrams
UR - https://ui.adsabs.harvard.edu/abs/2024arXiv240508946K/abstract
N2 - Context. The chemically peculiar (CP) stars of the upper main sequence are defined by spectral peculiarities that indicate unusual elemental abundance patterns in the presence of diffusion in the calm, stellar atmospheres. Some of them have a stable local magnetic field of up to several kiloGauss. The pre-main-sequence evolution of these objects is still a mystery and contains many open questions. Aims. We identify CP stars on the pre-main sequence to determine possible mechanisms that lead to the occurrence of chemical peculiarities in the (very) early stages of stellar evolution. Methods. We identified likely pre-main-sequence stars by fitting the spectral energy distributions. The subsequent analysis using stellar spectra and photometric time series helped us to distinguish between CP and non-CP stars. Additionally, we compared our results to the literature to provide the best possible quality assessment. Results. Out of 45 candidates, about 70 % seem to be true CP stars or CP candidates. Furthermore, 9 sources appear to be CP stars on the pre-main sequence, and all are magnetic. We finally report a possible CP2 star that is also a pre-main-sequence star and was not previously in the literature. Conclusions. The evolution of the peculiarities seems to be related to the (strong) magnetic fields in these CP2 stars.
ER -
KUESS, Lukas, Ernst PAUNZEN, Nikola FALTOVÁ, Daniel JADLOVSKÝ, Matúš LABAJ, Marko MESARČ, Prapti MONDAL, Michal PRIŠEGEN, Tahereh RAMEZANI, Johana SUPÍKOVÁ, Kateřina SVAČINKOVÁ, Michaela VÍTKOVÁ, Caiyun XIA, Klaus BERNHARD a Stefan HÜMMERICH. Chemically peculiar stars on the pre-main sequence. \textit{Astronomy \&{} Astrophysics}. EDP Sciences, 2024, 25 s. ISSN~0004-6361.
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