Asymptotic giant branch stars in the ISOGAL survey - Archive ouverte HAL
Article Dans Une Revue Bulletin of the Astronomical Society of India Année : 2000

Asymptotic giant branch stars in the ISOGAL survey

D. K. Ojha
  • Fonction : Auteur
G. Simon
  • Fonction : Auteur
J. Blommaert
  • Fonction : Auteur

Résumé

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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Dates et versions

hal-04110351 , version 1 (30-05-2023)

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D. K. Ojha, A. Omont, G. Simon, J. Blommaert. Asymptotic giant branch stars in the ISOGAL survey. Bulletin of the Astronomical Society of India, 2000, 28, pp.241-242. ⟨hal-04110351⟩
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