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Evolved massive stars in W33 and in GMC G23.3 − 0.3

Published online by Cambridge University Press:  31 March 2017

M. Messineo ,
J. S. Clark ,
D. F. Figer ,
K. M. Menten ,
R.-P. Kudritzki ,
F. Najarro ,
R. M. Rich ,
V. D. Ivanov ,
E. Valenti  and
C. Trombley
...Show all authors
M. Messineo
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany, email: messineo@mpifr-bonn.mpg.de
J. S. Clark
Affiliation:
Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
D. F. Figer
Affiliation:
Center for Detectors, Rochester Institute of Technology, 54 Memorial Drive, Rochester, NY 14623, USA
K. M. Menten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany, email: messineo@mpifr-bonn.mpg.de
R.-P. Kudritzki
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
F. Najarro
Affiliation:
Centro de Astrobiologia (CSIC-INTA), Ctra. de Torrejon a Ajalvir km4, E-28850, Torrejonde Ardoz, Madrid, Spain
R. M. Rich
Affiliation:
Physics and Astronomy Building, 430 Portola Plaza, Box 951547, Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547, USA
V. D. Ivanov
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Munchen, Germany
E. Valenti
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Munchen, Germany
C. Trombley
Affiliation:
Center for Detectors, Rochester Institute of Technology, 54 Memorial Drive, Rochester, NY 14623, USA
C.-H. R. Chen
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany, email: messineo@mpifr-bonn.mpg.de
B. Davies
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, Wirral. CH41 1LD, UK
J. W. MacKenty
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA
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Abstract

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We conducted infrared spectroscopic observations of bright stars in the direction of the molecular clouds W33 and GMC G23.3 − 0.3. We compared stellar spectro-photometric distances with parallactic distances to these regions, and we were able to assess the association of the detected massive stars with these molecular complexes. The spatial and temporal distributions of the detected stars enabled us to locate sources of ionizing radiation and to gather precise information on the star formation history of these clouds. The studied clouds present different distributions of massive stars.

Keywords

infrared: stars stars: evolution - supergiants open clusters and associations: general ISM: clouds - ISM: supernova remnants
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S316: Formation, evolution, and survival of massive star clusters , August 2015 , pp. 167 - 168
Copyright
Copyright © International Astronomical Union 2017 

References

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