ABSTRACT The SEDIGISM (Structure, Excitation and Dynamics of the Inner Galactic
Interstellar Medium) survey used the APEX telescope to map 84 deg2 of the Galactic plane …

Soon after the recent first ever detection of gravitational waves from merging black holes it
has been suggested that their origin is primordial. Appealingly, a sufficient number of …

Context. High-mass stars are formed as a result of the fragmentation of massive molecular
clumps. However, what it is not clear is whether this fragmentation gives rise to stable …

Investigating the physical and chemical structure of massive star-forming regions is critical
for understanding the formation and early evolution of massive stars. We performed a …

Isocyanic acid (HNCO) is a simple molecule with a potential to form prebiotic and complex
organic species. Using a spectral survey collected with the Atacama Pathfinder EXperiment …

In this paper, we present a new multifrequency study of the giant star-forming complex RCW
122. We used molecular data obtained with the ASTE 10 m and the APEX 12 m telescopes …

The Large Latin American Millimeter Array (LLAMA for short) is a joint scientific and
technological undertaking of Argentina and Brazil whose goal is to install and to operate an …

Star-forming processes strongly influence the ISM chemistry. Nowadays, many high-quality
databases are available at millimeter wavelengths. Using them, it is possible to carry out …

In the interstellar cold gas, the chemistry of formaldehyde (H 2 CO) can be essential to
explain the formation of complex organic molecules. On this matter, the massive and …

We present briefly the LLAMA sub-mm radiotelescope, a joint project of Argentina and
Brazil, being mounted in the Andes, Argentina, at 4800 m altitude. Here we focus on the …