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Optical Properties of Amorphous Alumina Dust in the Envelopes around O-Rich AGB Stars

Suh, Kyung-Won

We investigate optical properties of amorphous alumina (Al_2O_3) dust grains in the envelopes around O-rich asymptotic giant branch (AGB) stars considering the laboratory measured optical data. We derive the optical constants of amorphous alumina in a wide wavelength range that satisfy the Kramers-Kronig relation and reproduce the laboratory measu…

A New Catalog of Silicate Carbon Stars

Suh, Kyung-Won; Kwon, Young-Joo

Dust Around Herbig AE/Be Stars

Suh, Kyung-Won

We model dust around Herbig Ae/Be stars using a radiative transfer model for multiple isothermal circumstellar dust shells to reproduce the multiple broad peaks in their spectral energy distributions (SEDs). Using the opacity functions for various types of dust grains at different temperatures, we calculate the radiative transfer model SEDs for mu…

Properties of the Variation of the Infrared Emission of Oh/ir Stars II. The L Band Light Curves

Suh, Kyung-Won; Kwon, Young-Joo

Dust Shell Models for Low Mass-Loss Rate Oxygen-Rich AGB Stars

Suh, Kyung-Won