Results 61 to 70 of about 10,794 (262)

The Role of Terahertz and Far-IR Spectroscopy in Understanding the Formation and Evolution of Interstellar Prebiotic Molecules

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Stellar systems are often formed through the collapse of dense molecular clouds which, in turn, return copious amounts of atomic and molecular material to the interstellar medium.
Duncan V. Mifsud   +6 more
doaj   +1 more source

Astrochemistry With the Orbiting Astronomical Satellite for Investigating Stellar Systems

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Chemistry along the star- and planet-formation sequence regulates how prebiotic building blocks—carriers of the elements CHNOPS—are incorporated into nascent planetesimals and planets.
Jennifer B. Bergner   +19 more
doaj   +1 more source

Enlightening the Chemistry of Infalling Envelopes and Accretion Disks Around Sun-Like Protostars: The ALMA FAUST Project

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The huge variety of planetary systems discovered in recent decades likely depends on the early history of their formation. In this contribution, we introduce the FAUST Large Program which focuses specifically on the early history of solar-like protostars
C. Codella   +6 more
doaj   +1 more source

On the Energetics of the HCO$^+$ + C $\to$ CH$^+$ + CO Reaction and Some Astrochemical Implications [PDF]

open access: yes, 2017
We explore the energetics of the titular reaction, which current astrochemical databases consider open at typical dense molecular (i.e., dark) cloud conditions.
Bhaskar, Roshan G.   +3 more
core   +3 more sources

Cretaceous-Tertiary boundary deposits in Denmark: A diachroneity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
The lateral distribution of predominantly terrestrial kerogen or humics enriched with copper(II) porphyrins (Cu-P) across the Danish marine basin implies that the alleged Cretaceous-Tertiary (KT) boundary deposits in western Denmark (at the Nye Kløv ...
Premović Pavle I.
doaj   +1 more source

Interstellar dimethyl ether gas-phase formation: a quantum chemistry and kinetics study [PDF]

open access: yes, 2018
Dimethyl ether is one of the most abundant interstellar complex organic molecules. Yet its formation route remains elusive. In this work, we have performed electronic structure and kinetics calculations to derive the rate coefficients for two ion ...
Balucani, Nadia   +6 more
core   +3 more sources

Dust Formation in Astrophysical Environments: The Importance of Kinetics

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Astronomical observations and analysis of stardust isolated from meteorites have revealed a highly diverse interstellar and circumstellar grain inventory, including a wide range of amorphous materials and crystalline compounds (silicates and carbon ...
A.G.G.M. Tielens, A.G.G.M. Tielens
doaj   +1 more source

Astrochemistry of dust, ice and gas: introduction and overview

open access: yes, 2014
A brief introduction and overview of the astrochemistry of dust, ice and gas and their interplay is presented, aimed at non-specialists. The importance of basic chemical physics studies of critical reactions is illustrated through a number of recent ...
van Dishoeck, Ewine F.
core   +1 more source

Astrochemistry and Observations [PDF]

open access: yes, 1997
8 pages, 6 figures in text, From Fourth Cologne-Bonn-Zermatt-Symposium, The Dense Interstellar Matter in ...
openaire   +3 more sources

Reaction Kinetics in a Tight Spot

open access: yes, 2005
The standard analysis of reaction networks based on deterministic rate equations fails in confined geometries, commonly encountered in fields such as astrochemistry, thin film growth and cell biology.
Bartholomay   +16 more
core   +1 more source

Home - About - Disclaimer - Privacy