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| Paper: |
GRAMS: A Grid of RSG and AGB Models |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
203 |
| Authors: |
Srinivasan, S.; Sargent, B. A.; Meixner, M. |
| Abstract: |
We present a grid of oxygen- and carbon-rich circumstellar dust
radiative transfer models for asymptotic giant branch (AGB) and red
supergiant (RSG) stars. The grid samples a large region of the
relevant parameter space, and it allows for a quick calculation of
bolometric fluxes and dust mass-loss rates from multi-wavelength
photometry. This method of fitting observed spectral energy
distributions (SEDs) is preferred over detailed radiative transfer
calculations, especially for large data sets such as the SAGE
(Surveying the Agents of a Galaxy's Evolution)
survey of the Magellanic Clouds. The mass-loss rates calculated for
SAGE data will allow us to quantify the dust returned to the
interstellar medium (ISM) by the entire AGB population. The total
injection rate provides an important constraint for models of
galactic chemical evolution. Here, we discuss our carbon star
models and compare the results to SAGE observations in the Large
Magellanic Cloud (LMC). |
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