The successive addition of H atoms to CO in the solid phase has been hitherto regarded as the primary route to form methanol in dark molecular clouds. However, recent Monte […]
astro-ph.GA]
Posted inAstrochemistry
Radiation-induced D/H Exchange Rate Constants in Aliphatics Embedded in Water Ice
Gas-phase and solid-state chemistry in low-temperature interstellar clouds and cores leads to a D/H enhancement in interstellar ices, which is eventually inherited by comets, meteorites, and even planetary satellites. Hence, […]
Posted inAstrochemistry
Precursors Of Fatty Alcohols In The ISM: Discovery Of n-propanol
Theories on the origins of life propose that early cell membranes were synthesized from amphiphilic molecules simpler than phospholipids such as fatty alcohols. The discovery in the interstellar medium (ISM) […]
Posted inAstrochemistry
A Search For Heterocycles in GOTHAM Observations Of TMC-1
We have conducted an extensive search for nitrogen-, oxygen- and sulfur-bearing heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband centimeter-wavelength spectral line survey of the region from […]
Posted inAstrochemistry
Precursors Of The RNA-world In Space: Detection of (Z)-1,2-ethenediol In The interstellar Medium, A Key Intermediate In Sugar Formation
We present the first detection of (Z)-1,2-ethenediol, (CHOH)2, the enol form of glycolaldehyde, in the interstellar medium towards the G+0.693-0.027 molecular cloud located in the Galactic Center. We have derived […]
Posted inAstrochemistry
The ALMA-PILS survey: First Tentative Detection of 3-hydroxypropenal (HOCHCHCHO) In The Interstellar Medium And Chemical Modeling Of The C3H4O2 Isomers
Characterizing the molecular composition of solar-type protostars is useful for improving our understanding of the physico-chemical conditions under which the Sun and its planets formed. In this work, we analyzed […]
Posted inAstrochemistry
The SKA As A Prebiotic Molecule Detector
One of the theories for the origin of life proposes that a significant fraction of prebiotic material could have arrived to Earth from outer space between 4.1 and 3.8 billion […]
Posted inAstrochemistry
The Prebiotic Molecular Inventory Of Serpens SMM1: II. The Building Blocks Of Peptide Chains
This work aims to constrain the abundances of interstellar amides, by searching for this group of prebiotic molecules in the intermediate-mass protostar Serpens SMM1-a. ALMA observations are conducted toward Serpens […]
Posted inAstrochemistry
Interstellar Hydrocarbons: Degradation Chemistry in Diffuse Clouds
Observations of diffuse clouds showed that they contain a number of simple hydrocarbons (e.g. CH, C2H, (l- and c-)C3H2, and C4H) in abundances that may be difficult to understand on […]
Posted inAstrochemistry
Organic Molecules in Interstellar Space: Latest Advances
Although first considered as too diluted for the formation of molecules in-situ and too harsh an environment for their survival, the interstellar medium has turned out to host a rich […]