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Séminaire du Jeudi 29 novembre 2018

Towards a unified model for low- and high-mass star-formation

Alvaro Hacar Gonzalez (Leiden Observatory)
Thursday November 29th - 11am
IPAG Seminar Room - IPAG

As demonstrated by different galactic surveys, the star-formation process is intimately connected to the formation and evolution of filaments. Using large-scale observations from both single-dish and interferometers such as IRAM and ALMA, we carried out a systematic study of the molecular emission of several filamentary clouds like Taurus, Perseus, and Orion. The analysis of the internal gas kinematics of these regions indicates a complex substructure in both low- and high-mass filaments. Independently of the environment, filaments are revealed as bundles of fibers of different complexity. The local properties of these fibers (internal motions, distribution, and mass) set the initial conditions for the formation stars within all these clouds. Based on these findings, we propose a unified star-formation scenario where the observed differences between low- and high-mass clouds, and the origin of clusters, emerge naturally from the initial concentration of fibers.


Sous la tutelle de:

tutelles

Sous la tutelle de:

CNRS Université Grenoble Alpes