naa a22 4500 510790410 CHVBK 20180411083317.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S1063773713050022 doi (NATIONALLICENCE)springer-10.1134/S1063773713050022 Fadeyev Yu Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya ul. 48, 109017, Moscow, Russia aut Evolution and the period-luminosity relation for red supergiants in the Magellanic Clouds [Elektronische Daten] [Yu. Fadeyev] Excitation of radial pulsations in red supergiants of Magellanic Clouds is investigated using the stellar evolution calculations and the self-consistent solution of the equations of radiation hydrodynamics and turbulent convection. The stars with initial masses 6M ⊙ ≤ M ZAMS ≤ 28M ⊙ and the initial chemical composition X = 0.7, 0.004 ≤ Z ≤ 0.008 are shown to be unstable against fundamental mode oscillations with periods from 17 to 1200 days as they become helium burning red supergiants. The period-luminosity relation slightly depends on the mass loss rate varying with a factor of three, whereas its dependence on the metal abundance is given by δM bol = 0.89δ log Z. In comparison with galactic red supergiants the low metal abundances in red supergiants of Magellanic Clouds are responsible for their higher effective temperatures and substantially narrower ranges of evolutionary radius change during helium burning. Therefore on the period-mass diagram the red supergiants of Magellanic Clouds are located within the strip with width of δ logM ≈ 0.09, so that the uncertainty of mass evaluation of the red supergiant with the known pulsation period is nearly 25%. Pleiades Publishing, Ltd., 2013 stars: variable and peculiar nationallicence Astronomy Letters SP MAIK Nauka/Interperiodica 39/5(2013-05-01), 306-314 1063-7737 39:5<306 2013 39 11443 https://doi.org/10.1134/S1063773713050022 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063773713050022 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Fadeyev Yu Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya ul. 48, 109017, Moscow, Russia aut NATIONALLICENCE 773 0- Astronomy Letters SP MAIK Nauka/Interperiodica 39/5(2013-05-01), 306-314 1063-7737 39:5<306 2013 39 11443 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer