aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 69 10.34898/aat.vol5.iss1.pp5-7 Magnetism and Activity of the Sun - 2022 Conference proceedings Dependence of starspot temperatures on the spectral type and luminosity of stars Alekseev Ilya Kozhevnikova Alla Crimean Astrophysical Observatory, Nauchny, 298409 Ural Federal University, Lenin av. 51, Ekaterinburg 620083 28 03 2024 5 1 5 7 28 03 2024 Copyright (c) 2026 Alekseev I., Kozhevnikova A. 2026 Ilya Alekseev, Alla Kozhevnikova The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

The paper considers the spottedness models for 54 stars with solar-type activity at different evolutionary stages (stars of different spectral types and luminosity classes). We note the dependence of starspot temperatures on the temperature of the undisturbed photosphere for stars at each stage of evolution (young post T Tau stars, dwarf stars on MS, and evolved giants). A weak dependence of starspot temperatures on the evolutionary stage of stars is shown. The general analytical expression for estimating starspot temperatures by the temperatures of undisturbed photospheres is obtained.

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