Surface activity of a Rossby sequence of cool Hyades stars
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918217792880640 |
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| author | Strassmeier, K. G. Ilyin, I. Steffen, M. Barnes, S. A. |
| author_facet | Strassmeier, K. G. Ilyin, I. Steffen, M. Barnes, S. A. |
| contents | Aims. The Hyades cluster is key for the study of rotational, activity, and chemical evolution of solar-like low-mass stars. Here we present quantitative surface-activity information for a sequence of 21 Hyades dwarf stars. Conclusions. We conclude that the Rossby-number dependencies of the surface activity tracers A(Li), R(IRT), and B on our Hyades dwarf sequence primarily originate from convective motions, expressed by its turnover time, and only to a smaller and sometimes inverse extent from surface rotation and its related extra mixing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_21456 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Surface activity of a Rossby sequence of cool Hyades stars Strassmeier, K. G. Ilyin, I. Steffen, M. Barnes, S. A. Solar and Stellar Astrophysics Aims. The Hyades cluster is key for the study of rotational, activity, and chemical evolution of solar-like low-mass stars. Here we present quantitative surface-activity information for a sequence of 21 Hyades dwarf stars. Conclusions. We conclude that the Rossby-number dependencies of the surface activity tracers A(Li), R(IRT), and B on our Hyades dwarf sequence primarily originate from convective motions, expressed by its turnover time, and only to a smaller and sometimes inverse extent from surface rotation and its related extra mixing. |
| title | Surface activity of a Rossby sequence of cool Hyades stars |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2510.21456 |