Oxygen- and carbon-rich variable red giant populations in the Magellanic Clouds from EROS, OGLE, MACHO, and 2MASS photometry
Context. The carbon-to-oxygen (C/O) ratio of asymptotic giant branch (AGB) stars constitutes an important index of evolutionary and environment/metallicity factor. Aims. We develop a method for mass C/O classification of AGBs in photometric surveys without using periods. Methods. For this purpose we rely on the slopes in the tracks of individual stars in the colour-magnitude diagram. Results. We demonstrate that our method enables the separation of C-rich and O-rich AGB stars with little...[Show more]
|Collections||ANU Research Publications|
|Source:||Astronomy and Astrophysics|
|01_Wisniewski_Oxygen-_and_carbon-rich_2011.pdf||1.76 MB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.