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HOBYS and W43-HERO: Two more steps toward a Galaxy-wide understanding of high-mass star formation

Part of: IAU Issue 315 - From Interstellar Clouds...

Published online by Cambridge University Press:  12 September 2016

Frédérique Motte ,
Sylvain Bontemps  and
Jérémy Tigé
Frédérique Motte
Affiliation:
Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Univ. Grenoble Alpes - CNRS/INSU, BP 53, 38041 Grenoble Cedex 9, France email: frederique.motte@ujf-grenoble.fr Laboratoire AIM Paris-Saclay, CEA/IRFU - CNRS/INSU - Univ. Paris Diderot, Service d'Astrophysique, Bât. 709, CEA-Saclay, F-91191 Gif-sur-Yvette Cedex, France
Sylvain Bontemps
Affiliation:
OASU/LAB-UMR 5804, CNRS - Université Bordeaux 1, 33270 Floirac, France
Jérémy Tigé
Affiliation:
Laboratoire dAstrophysique de Marseille (LAM), Aix Marseille Université - CNRS, UMR 7326, 13388, Marseille, France
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Abstract

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The Herschel/HOBYS key program allows to statistically study the formation of 10−20 M⊙ stars. The IRAM/W43-HERO large program is itself dedicated to the much more extreme W43 molecular complex, which forms stars up to 50 M⊙. Both reveal high-density cloud filaments of several pc3, which are forming clusters of OB-type stars. Given their activity, these so-called mini-starburst cloud ridges could be seen as “miniature and instant models” of starburst galaxies. Both surveys also strongly suggest that high-mass prestellar cores do not exist, in agreement with the dynamical formation of cloud ridges. The HOBYS and W43 surveys are necessary steps towards Galaxy-wide studies of high-mass star formation.

Keywords

stars: formationISM: structurestar clustersstarburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S315: From Interstellar Clouds to Star-Forming Galaxies: Universal Processes? , August 2015 , pp. 146 - 153
Copyright
Copyright © International Astronomical Union 2016 

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