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Increasing the Chemical complexity in the Galactic Center

Presentation #155.03 in the session The Neutral and Molecular ISM.

Published onJan 31, 2023
Increasing the Chemical complexity in the Galactic Center

We present our recent discoveries in a region of the Galactic Center of several nitriles, n-propanol, PO+, that approach us to the understanding of precursors of larger molecules, as lipids, to help with the theories of the origin of life on Earth. At a distance of 7.9 kpc, our Galactic Center is a unique laboratory for the study of physical processes that occur within galactic nuclei. But its specific properties create a perfect environment for the study of not only physics, but chemistry. The region Sgr B2 is one of the richest in chemistry that we have been able to study. In its hottest regions chemical pathways produce more and more complex molecules. But we have found that this is not particular of those really hot regions. The study of molecular emission in a nearby region, G+0.693-0.027, were shocks (rich in the area) enrich the environment has shown that the complexity doesn’t need of this proto-star objects to rage in place. Thanks to a high-sensitivity spectroscopic survey carried out with the Green Bank, IRAM 30m and Yebes 40m telescopes, we have look for the pathways to find ever more complex molecules. We started just finding previously discovered alcohols and ethers (Requena-Torres et al. 2006, Zeng et al. 2021). But recently there has been a boom in the discovery of more complicated alcohols, Nitrogenated, Sulfur and Phosphorus molecules (e.g. Jimenez-Serra et al. 2021, Rivilla et al. 2021, Rivilla et al. 2022).

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