期刊
ASTRONOMY & ASTROPHYSICS
卷 448, 期 1, 页码 181-187出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20054163
关键词
stars : circumstellar matter; stars : mass-loss; stars : AGB and post-AGB
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 V, I and 2MASS J, H, K 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.
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