Abstract

Contributed Talk - Splinter LowMet

Friday, 13 September 2024, 14:50   (S23)

ALMAGAL in the Outer Galaxy: High-Mass Star Formation at Sub-Solar Metallicity

Eleonore Dann, Peter Schilke, Beth Jones, Álvaro Sánchez-Monge, Alessandro Coletta, Chiara Mininni, Gary Fuller, Sergio Molinari, Cara Battersby, Paul Ho and the ALMAGAL consortium
University of Cologne, University of Cologne, University of Cologne, Institute of Space Sciences (ICE-CSIC), INAF—Istituto di Astrofisica e Planetologia Spaziali, INAF—Istituto di Astrofisica e Planetologia Spaziali, Jodrell Bank Centre for Astrophysics, INAF—Istituto di Astrofisica e Planetologia Spaziali, University of Connecticut, Harvard–Smithsonian Center for Astrophysics

The outer Galaxy is a unique laboratory to investigate the impact of metallicity on star formation in unprecedented detail over a variety of spatial scales. The recent ALMA large program ALMAGAL observed ~1000 high mass star-forming regions across the Galactic disk in 1.3 mm dust continuum emission and several molecular line transitions at a resolution of ~1000 au. Of these, around 50 sources are in the outer Galaxy covering Galactocentric distances from 9 to 14 kpc (~0.5 solar metallicity). First ALMAGAL results show that these outer Galaxy regions contain many varieties of morphology and fragmentation. We observe a diversity of molecular detections and report the discovery of a new hot core in the outer Galaxy. With this high-resolution dataset from ALMAGAL, we aim to get an insight on the impact of metallicity on high-mass star formation at core-scales.