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DUST SHELL MODELS FOR LOW MASS-LOSS RATE OXYGEN-RICH AGB STARS

  • SUH KYUNG-WON (Department of Astronomy & Space Science, Chungbuk National University)
  • Published : 2005.06.01

Abstract

We investigate the spectral energy distributions (SEDs) of low mass-loss rate O-rich asymptotic giant branch (AGB) stars using the infrared observational data including the Infrared Space Observatory (ISO) data. Comparing the results of detailed radiative transfer model calculations with observations, we find that the dust formation temperature is much lower than 1000 K for standard dust shell models. We find that the superwind model with a density-enhanced region can be a possible alternative dust shell model for LMOA stars.

Keywords

stars: AGB and post-AGB;Circumstellar Matter;radiative transfer;infrared: stars

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