| Autor: |
Rudnitskij, Georgij, Ashimbaeva, Nuriya, Colom, Pierre, Lekht, Evgeny, Pashchenko, Mikhail, Tolmachev, Alexander |
| Zdroj: |
Proceedings of the International Astronomical Union; Aug2018, Vol. 14 Issue S343, p493-494, 2p |
| Abstrakt: |
Results of long-term studies of circumstellar molecular maser emission of late-type giant and supergiant variable stars are reported. In the 1.35-cm H2O line, the peak flux density correlates with the optical brightness lagging behind it by 0.3–0.4 P (P is the stellar period). "Superperiods" of 10 to 15 P are visible in several stars, demonstrated as high maxima in the visible light curve and associated flares in the H2O maser line. In the 18-cm OH lines, full polarization of the maser emission has been measured. Variable Zeeman patterns suggesting a changing magnetic field of a few milligauss have been detected. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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