Non-linear behavior in interstellar chemical models has been recognized for 25 years now. Different mechanisms account for the possibility of multiple fixed-points at steady state, characterized by the ionization degree […]
astro-ph.GA]
Posted inAstrochemistry, Press Release
Organic Matter In Interstellar Dust Lost At The Approach To The Heliosphere: Exothermic Chemical Reactions Of Free Radicals Ignited By The Sun
Aims. We tackle the conundrums of organic materials missing from interstellar dust when measured inside the Solar System, while undoubtedly existing in the local interstellar cloud (LIC), which surrounds the […]
Posted inAstrochemistry, Press Release
Formation Of Interstellar Complex Polycyclic Aromatic Hydrocarbons: Insights From Molecular Dynamics Simulations Of Dehydrogenated Benzene
Small organic molecules are thought to provide building blocks for the formation of complex interstellar polycyclic aromatic hydrocarbons (PAHs). However, the underlying chemical mechanisms remain unclear, particularly concerning the role […]
Posted inAstrochemistry, Press Release
Early Science from GOTHAM: Project Overview, Methods, and the Detection of Interstellar Propargyl Cyanide (HCCCH2CN) in TMC-1
We present an overview of the GOTHAM (GBT Observations of TMC-1: Hunting Aromatic Molecules) Large Program on the Green Bank Telescope. This and a related program were launched to explore […]
Posted inGenomics, Proteomics, Bioinformatics, Press Release
Prebiotic Precursors Of The Primordial RNA World In Space: Detection Of NH2OH
One of the proposed scenarios for the origin of life is the primordial RNA world, which considers that RNA molecules were likely responsible for the storage of genetic information and […]
Posted inAstrochemistry, Press Release
Impact of PAH Photodissociation on the Formation of Small Hydrocarbons in the Orion Bar and the Horsehead PDRs
We study whether polycyclic aromatic hydrocarbons (PAHs) can be a weighty source of small hydrocarbons in photo-dissociation regions (PDRs). We modeled the evolution of 20 specific PAH molecules in terms […]
Posted inAstrochemistry, Press Release
Graphene Molecules Contributing to the Infrared Bands of Carbon Rich Planetary Nebulae
It is well known since 2010 that fullerene C60 is widespread through the interstellar space. Also, it is well known that graphene is a source material for synthesizing fullerene. Here, […]
Posted inAstrochemistry, Press Release
First Detection Of 13CH In The Interstellar Medium
In recent years, a plethora of high spectral resolution observations of sub-mm and FIR transitions of methylidene (CH), have demonstrated this radical to be a valuable proxy for H2, that […]
Posted inAstrochemistry, Press Release
Constraints Of The Formation And Abundances Of Methyl Carbamate, A Glycine Isomer, In Hot Corinos
Methyl carbamate CH3OC(O)NH2 is an isomer of glycine. Quantum chemical analyses show that methyl carbamate is more stable isomer than glycine. Because of this, there could be a higher chance […]
Posted inAstrochemistry, Press Release
High-Sensitivity Observations of Molecular Lines with the Arecibo Telescope
We report on one of the highest sensitivity surveys for molecular lines in the frequency range 6.0 to 7.4 GHz conducted to date. The observations were done with the 305m […]