| |
 |
| Paper: |
Optical and Infrared Properties of a Sample of Carbon Stars |
| Volume: |
378, Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes |
| Page: |
283 |
| Authors: |
DeMello, A.B.; Lorenz-Martins, S. |
| Abstract: |
With an observed sample of ~40 AGB carbon stars, we are developing an extended classification system for carbon-rich objects based on the most relevant classifying indexes available. The system of classification extends the traditional notation by combining the most common optical indexes with novel infrared ones. It presents the common C2–, j–, and MS–indexes (the latter based on the strength of the SiC2 bands) and population indicators, and the new SiC–index (SiC/C.A. abundance estimation), τ–index, and temperature index. The values for the infrared indexes were obtained through Monte Carlo simulations of the radiative transfer in the circumstellar envelopes of the stars. The full set of indexes, when applied to our sample, results in a more efficient system of classification, since an examination in a wide spectral range allows us to obtain a more complete picture for carbon stars. |
|
|
|
|
|
