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The OH/IR star population at the centre of the Galaxy

Published online by Cambridge University Press:  03 August 2017

Roberto Ortiz ,
Alain Omont ,
Mathias Schultheis ,
Eric Copet ,
Harm J. Habing ,
Maria Messineo ,
Shashikiran Ganesh  and
Joris A. D. L. Blommaert
Roberto Ortiz
Affiliation:
Departamento de Fisica, UFES, Campus Universitario, 29060-900, Vitoria ES, Brazil
Alain Omont
Affiliation:
Institut d'Astrophysique de Paris, CNRS, 98bis Bd. Arago, F-75014, Paris, France
Mathias Schultheis
Affiliation:
Institut d'Astrophysique de Paris, CNRS, 98bis Bd. Arago, F-75014, Paris, France
Eric Copet
Affiliation:
Institut d'Astrophysique de Paris, CNRS, 98bis Bd. Arago, F-75014, Paris, France
Harm J. Habing
Affiliation:
Leiden Observatory, Niels Bohrweg 2, Postbus 9513, 2300 RA, Leiden, The Netherlands
Maria Messineo
Affiliation:
Leiden Observatory, Niels Bohrweg 2, Postbus 9513, 2300 RA, Leiden, The Netherlands
Shashikiran Ganesh
Affiliation:
Physical Research Laboratory, Navarangpura, Ahmedabad 380009, India
Joris A. D. L. Blommaert
Affiliation:
ISO Science Operations Centre, Astrophysics Division, Space Science Dept. of ESA, Villafranca, P.O. Box 50727, E-28080 Madrid, Spain

Abstract

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In the last years various OH surveys at 1612 MHz have been carried out in the galactic bulge region with high spatial resolution (Lindqvist et al. 1992; Sevenster et al. 1997; Sjouwerman et al. 1998) which have resulted in the detection of over five hundred double-peaked objects commonly associated with oxygen-rich AGB stars. More recently, the ISOGAL survey, which is part of the ISO mission, scanned several regions along the galactic plane, including the inner bulge, at 6.8 and 15 micron wavelengths. In this work we report an analysis of 104 OH/IR stars in the bulge, based on near and mid-infrared observations. Mass-loss rates, luminosities and masses are determined for a sub-sample of stars, for which near-infrared data are available in the literature.

Type
Part 2. Stellar Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 335 - 338
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

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