Asymptotic giant branch stars in the ISOGAL survey

Details Asymptotic giant branch stars in the ISOGAL survey Asymptotic giant branch stars in the ISOGAL survey

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000basi...28..241o&link_type=abstract

Bulletin of the Astronomical Society of India, Vol. 28, p. 241-242 (2000)

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Scientific paper

We present and analyse the data of a field at 1 = 0o, b = +1o from the ISOGAL survey of selected areas of the inner Galactic bulge at 15 and 7 ?m. In combination with IJKs data from the near-infrared southern sky survey DENIS, the ISOCAM data allow the first detailed study of infrared stellar populations in very obscured regions of the inner Galaxy. The K/J-K magnitude-color diagram for the sources detected in the ISOGAL field shows a remarkably well-defined tip of the bulge red giant sequence. A few stars clearly show an excess in the value of J-K with respect to the red giant sequence. Most of them are probably AGB stars with large mass-loss rates. The other color-color and magnitude-color diagrams are also discussed. About half of the source have observed K-[15] colors. Thus these data suggest that these are masslosing stars.

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