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astro-ph1999
The rapidly evolving hypergiant IRC+10420: High-resolution bispectrum speckle-interferometry and dust-shell modelling
T. Bloecker, Y. Balega, K. -H. Hofmann +3
The hypergiant IRC+10420 is a unique object for the study of stellar evolution since it is the only object that is believed to be witnessed in its rapid transition from the red sup…
astro-ph1999
High-resolution speckle masking interferometry and radiative transfer modeling of the oxygen-rich AGB star AFGL 2290
A. Gauger, Y. Y. Balega, P. Irrgang +2
We present the first diffraction-limited speckle masking observations of the oxygen-rich AGB star AFGL 2290. The data was obtained with the Russian 6m SAO telescope. At the wavelen…