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Triggered massive-star formation on the borders of Galactic HII regions

Published online by Cambridge University Press:  08 November 2005

A. Zavagno ,
L. Deharveng ,
J. Brand ,
F. Massi ,
J. Caplan ,
F. Comerón  and
B. Lefloch
A. Zavagno
Affiliation:
Observatoire Astronomique de Marseille Provence, 2 Place Le Verrier, 13248 Marseille Cedex 4, France
L. Deharveng
Affiliation:
Observatoire Astronomique de Marseille Provence, 2 Place Le Verrier, 13248 Marseille Cedex 4, France
J. Brand
Affiliation:
INAF - Istituto di Radioastronomia, Via Gobetti 101, 40129 Bologna, Italy
F. Massi
Affiliation:
INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi, 5, 50125 Firenze, Italy
J. Caplan
Affiliation:
Observatoire Astronomique de Marseille Provence, 2 Place Le Verrier, 13248 Marseille Cedex 4, France
F. Comerón
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany
B. Lefloch
Affiliation:
Laboratoire d'Astrophysique, Observatoire de Grenoble, BP 53, F-38041 Grenoble Cedex 9, France
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Abstract

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Various physical processes are believed to trigger star formation on the borders of Galactic HII regions. Among these, the collect & collapse process is particularly attractive as it allows the formation of massive objects (single stars or clusters). In order to identify specific cases of this way of triggering star formation we are carrying out a multi-wavelength study of Galactic HII regions that exhibit signposts of massive-star formation at their borders. Hereby, we present two typical examples of such sources and discuss the results in the framework of the collect and collapse process, which seems to be at work as the major triggering agent in these two cases.

Keywords

Star: formationHII regions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S227: Massive Star Birth: A Crossroads of Astrophysics , May 2005 , pp. 346 - 351
Copyright
© 2005 International Astronomical Union