engleski

Properties of Circumstellar Dust in Symbiotic Miras

We present a study of the properties of circumstellar dust in symbiotic Miras during sufficiently long time intervals of minimal obscuration. The published JHKL magnitudes of o Ceti, RX Pup, KM Vel, V366 Car, V835 Cen, RR Tel and R Aqr have been collected. In order to investigate their long-term variations, we removed the Mira pulsations to correct their light curves. Assuming spherical temperature distribution of the dust in the close neighbourhood of the Mira, the DUSTY code was used to solve the radiative transfer in order to determine the dust temperature and its properties in each particular case. The preliminary results of this systematic study of dust envelopes in symbiotic stars with Miras as cool components provide information on nature of dust in these objects.

stars: binaries; symbiotic stars; circumstellar matter; stars: AGB; stars: post-AGB; infrared stars; radiative transfer

Rad je kao poster prezentiran na skupu "Evolution and chemistry of symbiotic stars, binary post-AGB and related objects", održanom od 28-30.08.2006., Wierzba - Mazury Lakes, Poljska ; objavljen u Knjizi sažetaka ; Joanna Mikolajewska (ur.) ; Varšava, 2006 ; str. 39-39 ; te na skupu International Astronomical Union XXVIth General Assembly : Symposium 240, održanom od 22-25.07. 2006.g., Prag, Republika Češka ; objavljen u Knjizi sažetaka ; W.I. Hartkopf, E.F. Guinan, P. Harmanec (ur.) ; Raris : International Astronomical Union, 2006. ; str. 260-260 ; i kao predavanje na skupu Workshop on symbiotic stars, binary post-AGB and related objects, održanom od 18.-23.08.2013.g., Wierzba, Poljska ; uz međunarodnu recenziju objavljen u Knjizi sažetaka ; Joanna Mikolajewska, Magdalena Otulakowska-Hypka, Natasza Siodmiak, Ryszard Szczerba (ur.) ; Varšava : N. Copernicus Astronomical Center, Polish Academy of Science, 2013. ;