LEGO: A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions in the Milky Way
1 Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
2 Haystack Observatory, Massachusetts Institute of Technology, Westford, MA 01886, USA
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Published online: 7 September 2022
The current generation of high-sensitivity (sub)mm-telescopes such as the IRAM-30m and NOEMA have allowed the emission from molecular lines to become a major tool for studying the physical, kinematic and chemical properties of extragalactic systems. However, we need to develop a detailed understanding of emission lines in Milky Way molecular clouds before we can exploit extragalactic line emission data to its full potential. With this in mind, the IRAM-30m large project “Line Emission to assess Galaxy Observations” (LEGO) aims at developing a comprehensive picture of how 3mm-band emission lines in MilkyWay molecular clouds depend on a variety of environmental factors. In this proceeding, I will focus on our recent detailed investigation of the W49 massive star-forming region published in Barnes et al. 2020 .
© The Authors, Published by EDP Sciences, 2022
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