FRAGMENTATION OF MASSIVE CORES TOWARD THE GALACTIC Hii REGION RCW 120 OBSERVED WITH ALMA - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

FRAGMENTATION OF MASSIVE CORES TOWARD THE GALACTIC Hii REGION RCW 120 OBSERVED WITH ALMA

Résumé

Feedback from high-mass stars (stellar winds, radiation and photoionization pressure, supernova explosions) can strongly modify the surrounding cloud. As a result, the next generation of stars is affected and can present different physical properties. Using ALMA interferometric observations, we characterized the fragmentation occurring inside the massive cores previously detected with Herschel and being good candidates for high-mass star formation. Most of the fragments have a mass higher than predicted by the thermal Jeans mechanism, thus requiring external turbulence to explain it, and some of the fragments have a mass higher than 8 M which make them interesting targets for further studies. One of the fragment shows different molecular emissions tracing hot core, disk and outflows and is the most promising site for the search of high-mass stars toward RCW 120.
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Dates et versions

hal-02459232 , version 1 (29-01-2020)

Identifiants

  • HAL Id : hal-02459232 , version 1

Citer

M. Figueira, Annie Zavagno, L. Bronfman. FRAGMENTATION OF MASSIVE CORES TOWARD THE GALACTIC Hii REGION RCW 120 OBSERVED WITH ALMA. SF2A-2019: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, Société Francaise d’Astronomie et d’Astrophysique (SF2A), May 2019, Nice, France. pp.89-92. ⟨hal-02459232⟩
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