MOTTE, F.; BONTEMPS, Sylvain; HENNEMANN, M.; NGUYEN LUONG, Q.; SCHNEIDER, N.; DIDELON, P.; ZAVAGNO, Annie

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MOTTE, F.
Institut de Recherches sur les lois Fondamentales de l'Univers [IRFU]

BONTEMPS, Sylvain
FORMATION STELLAIRE 2012

HENNEMANN, M.
Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]

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Communication dans un congrès

Ce document a été publié dans

SF2A-2012: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, P. de Laverny, N. Nardetto, R. Samadi, D. Valls-Gabaud and H. Wozniak, pp.45-50, 5 au 8 juin 2012 -Nice 2012, SF2A-2012: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, P. de Laverny, N. Nardetto, R. Samadi, D. Valls-Gabaud and H. Wozniak, pp.45-50, 5 au 8 juin 2012 -Nice 2012, -, 2012, Nice. 2012-12p. 45-50

Résumé en anglais

With its unprecedented spatial resolution and high sensitivity in the far-infrared to submillimetre regime, {Herschel} is revolutionizing our understanding of star formation. The HOBYS key program is an {Herschel} mapping survey dedicated to the formation of OB-type stars (Motte, Zavagno, Bontemps et al. 2010; see {http://hobys-herschel.cea.fr}. HOBYS aims at 1) discovering and characterizing the progenitors of high-mass stars, 2) making the link between the latters and their filamentary background, and 3) assessing the importance of triggering. Among the HOBYS highlights is the discovery of ''mini-starburst ridges" defined as high-density dominating filaments supersonically contracting and efficiently forming clusters of high-mass stars. Their existence is predicted by dynamical models of cloud formation such as converging flows and is favoring a (high-mass) star formation scenario involving gas flows and global infall. The present star formation rate measured within these ridges is high enough for these 1-10 pc^2 regions to be considered as miniature and instantaneous models of extragalactic starbursts.< Réduire

Mots clés en anglais

dust

ISM: clouds

ISM: structure

stars: formation

submillimeter

IR: Herschel

HII regions

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804