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ISOGAL and 2MASS Study of the Central Regions of Our Galaxy

Published online by Cambridge University Press:  13 May 2016

D.K. Ojha ,
A. Omont ,
S. Ganesh  and
Isogal Team
D.K. Ojha
Affiliation:
T.I.F.R., Homi Bhabha Road, Colaba, Mumbai - 400 005, India
A. Omont
Affiliation:
Institut d'Astrophysique de Paris, CNRS, Bd. Arago, F-75014, Paris
S. Ganesh
Affiliation:
Institut d'Astrophysique de Paris, CNRS, Bd. Arago, F-75014, Paris
Isogal Team
Affiliation:
Institut d'Astrophysique de Paris, CNRS, Bd. Arago, F-75014, Paris

Abstract

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We report the study of ISOGAL fields in the outer galactic bulge (-1.5° < l < +1.6°, −2.6° < b < + 6.0°, area ∼ 0.42 deg2). We have combined 15 μm and 7 μm ISOCAM observations with 2MASS JHKS data to determine the nature of the sources and the interstellar extinction. Most of the ISOGAL sources show evolution of mass-loss rates in the range 3×10−8 to 1 × 10−6 (M⊙/year). Most of the detected sources are red giants above the RGB tip; a few of them show an excess in J-Ks and Ks-[15] colors. These sources are AGB stars with large mass-loss rates.

Type
Star Formation Regions and Outflow Processes in our Galaxy
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 282 - 283
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

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