Results 1 to 10 of about 792,921 (206)

First Principles Rovibronic Absorption Spectra of HF Molecule [PDF]

open access: yesJournal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.
Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher   +5 more
wiley   +2 more sources

Presumed Detection of C5 Molecule in the Interstellar Medium

open access: yesThe Astrophysical Journal, 2022
The paper suggests the presence of the carbon chain C _5 molecule in translucent, interstellar H i clouds. This species, the only five atom interstellar molecule, observable in dark, translucent clouds, seems to be observable in reasonably dense clouds ...
J. Krełowski, R. Hakalla, W. Szajna
doaj   +1 more source

Astronomical Detection of the Interstellar Anion C10H− toward TMC-1 from the GOTHAM Large Program on the Green Bank Telescope

open access: yesThe Astrophysical Journal Letters, 2023
Using data from the Green Bank Telescope (GBT) Observations of TMC-1: Hunting for Aromatic Molecules (GOTHAM) survey, we report the first astronomical detection of the C _10 H ^− anion.
Anthony Remijan   +15 more
doaj   +1 more source

A chemical link between methylamine and methylene imine and implications for interstellar glycine formation

open access: yesCommunications Chemistry, 2022
The detection of glycine in comets is suggestive of a cosmic origin for amino acids on Earth, but the formation of glycine in interstellar media remains poorly understood.
Prasad Ramesh Joshi, Yuan-Pern Lee
doaj   +1 more source

High‐Pressure Carbonaceous Phases as Minerals

open access: yesGeophysical Monograph Series, Page 11-23., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley  

+1 more source

Chemical Kinetics Simulations of Ice Chemistry on Porous Versus Non-Porous Dust Grains

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The degree of porosity in interstellar dust-grain material is poorly defined, although recent work has suggested that the grains could be highly porous.
Drew A. Christianson   +2 more
doaj   +1 more source

Astrochemical Modeling of Propargyl Radical Chemistry in TMC-1

open access: yesThe Astrophysical Journal, 2023
Recent detections of aromatic species in dark molecular clouds suggest that formation pathways may be efficient at very low temperatures and pressures, yet current astrochemical models are unable to account for their derived abundances, which can often ...
Alex N. Byrne   +4 more
doaj   +1 more source

Detection of Interstellar E-1-cyano-1,3-butadiene in GOTHAM Observations of TMC-1

open access: yesThe Astrophysical Journal, 2023
We report the detection of the lowest-energy conformer of E -1-cyano-1,3-butadiene ( E -1- ${{\rm{C}}}_{4}{{\rm{H}}}_{5}\mathrm{CN}$ ), a linear isomer of pyridine, using the fourth data reduction of the GBT Observations of TMC-1: Hunting for Aromatic ...
Ilsa R. Cooke   +14 more
doaj   +1 more source

Nuclear Processes in Dark Interstellar Matter of H(0) Decrease the Hope of Migrating to Exoplanets

open access: yesSpace: Science & Technology, 2021
It is still generally assumed that interstellar travel will be possible after purely technical development and thus that mankind can move to some suitable exoplanet when needed.
Leif Holmlid
doaj   +1 more source

Home - About - Disclaimer - Privacy