Dependence of starspot temperatures on the spectral type and luminosity of stars

Article Sidebar

PDF
Published: Mar 28, 2024
Abstract views: 17
PDF downloads: 8
DOI: https://doi.org/10.34898/aat.vol5.iss1.pp5-7
Keywords:
stars starspots

Main Article Content

Ilya Alekseev
Crimean Astrophysical Observatory, Nauchny, 298409
Alla Kozhevnikova
Ural Federal University, Lenin av. 51, Ekaterinburg 620083

Abstract

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.

Downloads

Download data is not yet available.

Article Details

How to Cite
Alekseev I., Kozhevnikova A., 2024. Acta Astrophysica Taurica, vols. 5, no. 1, pp. 5–7. DOI: 10.34898/aat.vol5.iss1.pp5-7
Issue
Vol. 5 No. 1 (2024)
Section
Magnetism and Activity of the Sun and Stars - 2022 Conference proceedings
Creative Commons License

This work 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).

Creative Commons License

References

Alekseev I.Yu., 2001. Low-Mass Spotted Stars. Odessa: Astroprint. (In Russ.)

Alekseev I.Yu., 2008. Izv. Krymsk. Astrofiz. Observ., vol. 104, no. 1, p. 272. (In Russ.)

Alekseev I.Yu., 2014. Astrophysics, vol. 57, p. 254. Alekseev I.Yu., Gershberg R.E., 1996a. Astron. Rep., vol. 40, p. 538.

Alekseev I,Yu., Gershberg R.E., 1996b. Astron. Rep., vol. 40, p. 528.

Alekseev I.Yu., Gershberg R.E., 1996c. Astrophysics, vol. 39, p. 33.

Alekseev I.Yu., Gershberg R.E., 1997. Astron. Rep., vol. 41, p. 207.

Alekseev I.Yu., Gershberg R.E., 2022. Acta Astrophys. Tau., vol. 3, no. 2, p. 27.

Alekseev I.Yu., Kozhevnikova A.V., 2017. Astron. Rep., vol. 61, no. 3, p. 221.

Alekseev I.Yu., Kozhevnikova A.V., 2018. Astron. Rep., vol. 62, no. 6, p. 396.

Alekseev I.Yu., Kozlova O.V., 2001. Astrophysics, vol. 44, p. 429.

Alekseev I.Yu., Kozlova O.V., 2014. Bull. Crim. Astrophys. Obs., vol. 110, no. 3, p. 30.

Berdyugina S.V., 2005. Living Rev. Solar Phys., vol. 2, iss. 1, p. 8.

Berdyugina S.V., Pelt J., Tuominen I., 2002. Astron. Astrophys., vol. 394, p. 505.

Catalano S., Biazzo K., Frasca A., Marilli E., 2002. Astron. Astrophys., vol. 394, p. 1009.

Deutsch A.J., 1958. In Lehnert B. (Ed), Electromagnetic Phenomena in Cosmical Physics. Cambridge, p. 209.

Gershberg R.E., Ilyin I.V., Shakhovskaya N.I., 1991. Astron. Zhurn., vol. 68, p. 959. (In Russ.)

Herbst K., Papaioannou A., Airapetian V.S., Atri D., 2021. Astrophys. J., vol. 907, p. 89.

Hunemorder D.P., Ramsey L.W., 1987. Astrophys. J., vol. 319, p. 392.

Khokhlova V.L., 1975. Astron. zhurn., vol. 52, p. 950. (In Russ.)

Kozhevnikova A.V., Alekseev I.Yu., 2015. Astron. Rep., vol. 59, p. 937.

Kozhevnikova A.V., Kozhevnikov V.P., Alekseev I.Yu., 2018. Astrophysics, vol. 61, p. 30.

Messina S., Guinan E.F., Lanza A.F., 1999. Astrophys. Space Sci., vol. 260, p. 493.

O’Neal D., Neff J.E., 1997. Astron. J., vol. 113, p. 1129.

Poe C.H., Eaton J.A., 1985. Astrophys. J., vol. 289, p. 644.

Savanov I.S., Strassmeier K.G., 2008. Astron. Nachr., vol. 329, p. 364.

Savanov I.S., Dmitrienko E.S., 2019. In Bisikalo D.V., Shustov B.M., Barabanov S.I., et al. (Eds.), Nauchnye trudy Instituta astronomii RAN. M: Yanus-K, vol. 3, p. 244. (In Russ.)

Vogt S.S., 1981. Astrophys. J., vol. 247, p. 975.

Vogt S.S., Penrod G.D., 1983. Publ. Astron. Soc. Pacific, vol. 95, p. 565.