Volume 448, Number 1, March II 2006
|Page(s)||181 - 187|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||17 February 2006|
The mid- and far-infrared colours of AGB and post-AGB stars
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium e-mail: email@example.com
Accepted: 27 October 2005
With the advent of space missions, like SPITZER and ASTRO-F, with sensitive detectors in the near- and mid-infra red covering a reasonable field-of-view and having a good spatial resolution, it will be possible to detect individual AGB stars in Local Group galaxies. The filters used by these missions are non-standard and different from mission to mission. In this paper, the colours of mass-losing AGB and post-AGB stars are calculated in the broad-band filters of the SPITZER and ASTRO-F missions, as well as Bessell and 2MASS to connect these results to existing ground-based data. The models are calculated for carbon- and oxygen-rich chemistry and cover different effective temperatures and dust compositions.
Key words: stars: circumstellar matter / stars: mass-loss / stars: AGB and post-AGB
© ESO, 2006
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