Dependence of starspot temperatures on the spectral type and luminosity of stars
Article Sidebar
PDF downloads: 105
Main Article Content
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.
Supporting Agencies
The work of A. Kozhevnikova was supported by the Ministry of Science and Higher Education of the Russian Federation, project No. FEUZ-2020-0030
Downloads
Article Details
Copyright (c) 2024 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).
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.