| Issue |
A&A
Volume 693, January 2025
|
|
|---|---|---|
| Article Number | A264 | |
| Number of page(s) | 7 | |
| Section | Stellar atmospheres | |
| DOI | https://doi.org/10.1051/0004-6361/202452747 | |
| Published online | 23 January 2025 | |
3D radiative MHD simulations of starspots
II. Large-scale structure
Max Planck Institute for Solar System Research,
Justus-von-Liebig Weg 3,
37077
Göttingen,
Germany
★ Corresponding author; bhatia@mps.mpg.de
Received:
25
October
2024
Accepted:
20
December
2024
We computed realistic 3D radiative magnetohydrodynamic (MHD) near-surface models of starspots with substantial penumbrae on cool main sequence stars using the MURaM simulation code. This work is an improvement on the previous starspot models in a slab geometry. The umbra, penumbra, and the quiet star for all starspots are distinct, not only in intensity and temperature, but also in thermodynamic and velocity structure. These models represent a significant step towards modeling the starspot contribution to stellar light curves.
Key words: stars: atmospheres / stars: late-type / stars: magnetic field / starspots
© The Authors 2025
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is published in open access under the Subscribe to Open model.
Open Access funding provided by Max Planck Society.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.