Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acaps..18..313s&link_type=abstract
Acta Astrophys. Sin., Vol. 18, No. 3, p. 313 - 322
Astronomy and Astrophysics
Astrophysics
Infrared Photometry: Agb Stars, Sio Masers: Agb Stars, Sio Masers: Mira Stars
Scientific paper
Near-infrared photometry of 35 SiO maser stars of various types is presented. Combining the JHK flux densities from the IRAS data, the distributions of the stars on two color-color diagrams are obtained. The spectral slopes, equivalent black-body temperatures, maser luminosities and mass-loss rates of the central stars are calculated from the infrared and radio data. These parameters are then analysed together with the integrated SiO fluxes. The results show that SiO masers are common in AGB stages. The integrated SiO maser flux is only weakly correlated with the mass-loss rate, and increases slowly along the sequence from Mira stars to OH/IR stars. It is more closely correlated with the near-infrared colors and the equivalent black-body temperatures. The authors also briefly discuss the general function and specific role of SiO maser in the evolution of AGB stars.
Sun Jin
Zhang Haiyan
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