ALMAGAL

Questo progetto fa parte della serie Stellar formation and evolution

In detail

ALMAGAL is the first project to observe a statistically significant and complete sample of high-mass star-forming regions with a high and homogeneous spatial resolution of 1000AU with the interferometer ALMA to answer some of the open question in the field of fragmentation of clumps and of the formation of high-mass stars. 

The project targets more than 1000 dense clumps with masses greater than 500 M☉ within 7.5 kpc that are spread from the near tip of the Galactic Bar to the outskirts of the Milky Way, span the full evolutionary path from the infrared dark cloud (IRDC) to the HII region stage, and live in very different environments such as arm/inter-arm regions and proximity to triggering agents like OB associations and expanding HII region bubbles. The main goal of the project is the understanding, through the analysis of the continuum data and of the molecular lines data, of what are the physical processes governing the fragmentation of clumps into cluster made of multiple cores and how they evolve with time together with the comprehension of how the cores gain their mass and the role of the internal feedback from cores to clump gas.The analysis of such a large sample, covering different ambient condition in the Galaxy and evolutionary stages, and the comparison of these observations with the results of simulations will allow us to make a significant step forward in the comprehension of the star-formation process and fragmentation. 

The project is an ALMA Large Program and sees the collaboration of several research institutes lead by the co-PIs Sergio Molinari (INAF-IAPS, I), Peter Schilke (University of Cologne, D), Cara Battersby (University of Connecticut, USA), and Paul Ho (ASIAA, TW). 

It is now part of the ERC-Synergy funded project ECOGAL. The first results will be published in 2023.

Team

The ALMAGAL project involves researchers from various Italian and European research institutes: INAF-Istituto di Astrofisica e Planetologia Spaziali (PI), INAF- Osservatorio Astronomico di Arcetri, INAF-Istituto di Radioastromia, University of Cologne (PI), University of Connecticut (PI), ASIAA (PI). The IAPS staff involved is as follows: Sergio Molinari (PI) Milena Benedettini Alessandro Coletta Fabrizio De Angelis Anna Maria di Giorgio Davide Elia Scige Liù Ylenia Maruccia Chiara Mininni Sabrina Mordini Elenia Pacetti Stefano Pezzuto Eugenio Schisano Jaun Diego Soler Alessio Traficante.