Results 101 to 110 of about 8,526 (198)

From Meteorite to Life's Building Blocks: A possible Electrochemical Pathway to Amino Acids and Peptide Bonds

Chemistry – A European Journal, Volume 30, Issue 57, October 11, 2024.
This study investigates the ability of the carbonaceous meteorite CV3 Allende to act as a catalyst in electrochemical interactions, triggering electrocatalytic reactions resulting in nitrogen (N2) fixation and conversion to ammonia. Additionally, the evolution of crucial compounds such as H2, CN− and sulfur/H2S was observed, along with the detection of
Lucas Fernandez, Farzaneh Yari, Günter Hesser, Wolfgang Schöfberger   +3 more
wiley   +1 more source

High-Temperature Chemistry in External Galaxies [PDF]

, 2017
In external galaxies, some galaxies have higher activities of star formation and central supermassive black holes. The interstellar medium in those galaxies can be heated by different mechanisms such as UV-heating, X-ray heating, cosmic-ray heating, and shock/mechanical heating.
arxiv   +1 more source

First direct detection of large polycyclic aromatic hydrocarbons on asteroid (162173) Ryugu samples: An interstellar heritage

Natural Sciences, Volume 4, Issue 4, October 2024.
Large free aromatic species, with up to 61 carbon atoms, were detected in grains of the Ryugu carbonaceous asteroid using ultra‐sensitive two‐step laser mass spectrometry. This discovery confirms the presence of large polycyclic aromatic hydrocarbons in the interstellar medium and provides new information on the formation and evolution of organic ...
Hassan Sabbah, Ghylaine Quitté, Karine Demyk, Christine Joblin   +3 more
wiley   +1 more source

Molecular Astrophysics & Astrochemistry

, 2019
Many of the facilities and missions that Canada is or will be involved in as well as the diverse science programs that drive these missions rely on the astronomical detection and characterization of atomic and molecular gas as well as dust grains across the electromagnetic spectrum.
Cami, Jan, Peeters, Els, Houde, Martin, Mandy, Margot, Plume, Rene, Johnstone, Doug, van der Marel, Nienke, Sadavoy, Sarah, Hill, Alex   +8 more
openaire   +3 more sources

Infrared spectroscopy of the ν3 band of C3 in helium droplets

AIP Advances, 2018
The C3 molecule is an important species known to participate in key chemical reactions in combustion and astrochemistry. Its occurrence in environments of interest, its intramolecular physics, and its intermolecular reactivity have been areas of ...
Barbara A. Harruff-Miller, Christopher E. Bunker, William K. Lewis   +2 more
doaj   +1 more source

The Thermal Structure and Composition of Jupiter's Great Red Spot From JWST/MIRI

Journal of Geophysical Research: Planets, Volume 129, Issue 10, October 2024.
Abstract Jupiter's Great Red Spot (GRS) was mapped by the James Webb Space Telescope (JWST)/Mid‐Infrared Instrument (4.9–27.9 μ ${\upmu }$m) in July and August 2022. These observations took place alongside a suite of visual and infrared observations from; Hubble, JWST/NIRCam, Very Large Telescope/VISIR and amateur observers which provided both spatial ...
Jake Harkett, Leigh N. Fletcher, Oliver R. T. King, Michael T. Roman, Henrik Melin, Heidi B. Hammel, Ricardo Hueso, Agustín Sánchez‐Lavega, Michael H. Wong, Stefanie N. Milam, Glenn S. Orton, Katherine de Kleer, Patrick G. J. Irwin, Imke de Pater, Thierry Fouchet, Pablo Rodríguez‐Ovalle, Patrick M. Fry, Mark R. Showalter   +17 more
wiley   +1 more source

Formation of Methanol via Fischer‐Tropsch Catalysis by Cosmic Iron Sulphide

ChemPhysChem, Volume 25, Issue 17, September 2, 2024.
Periodic quantum mechanical simulations evidence the potentiality to synthesise methanol through a Fischer‐Tropsch mechanism in different astrophysical environments facilitated by the catalytic properties of cosmic FeS grains, which are enhanced by the presence of naturally‐occurring point surface defects.
Berta Martinez‐Bachs, Alexia Anguera‐Gonzalez, Gerard Pareras, Albert Rimola   +3 more
wiley   +1 more source

Data-Driven Astrochemistry: One Step Further within the Origin of Life Puzzle

Life, 2018
Astrochemistry, meteoritics and chemical analytics represent a manifold scientific field, including various disciplines. In this review, clarifications on astrochemistry, comet chemistry, laboratory astrophysics and meteoritic research with respect to ...
Alexander Ruf, Louis L. S. d’Hendecourt, Philippe Schmitt-Kopplin   +2 more
doaj   +1 more source

Irradiation Investigation: Exploring the Molecular Gas in NGC 7293

Galaxies, 2020
Background: Many planetary nebulae retain significant quantities of molecular gas and dust despite their signature hostile radiation environments and energetic shocks.
Jesse Bublitz, Joel Kastner, Pierre Hily-Blant, Thierry Forveille, Miguel Santander-García, Valentin Bujarrabal, Javier Alcolea, Rodolfo Montez   +7 more
doaj   +1 more source

Exploring the Scaling Factors for Infrared Modes of PANHs – A Case Study on Cationic 3‐Azafluoranthene⋅+ and Protonated 3‐Azafluoranthene**

ChemPhysChem, Volume 25, Issue 16, August 19, 2024.
The infrared spectra of the 3‐azafluoranthene radical cation and protonated 3‐azafluranthene have been recorded. Simulations show that vibrations with nitrogen contribution should be scaled differently than carbon‐based vibrations. Abstract Infrared (IR) emission bands by interstellar polycyclic aromatic hydrocarbons (PAHs) and polycyclic aromatic ...
Domenik Schleier, Jerry Kamer, Jonathan Martens, Giel Berden, Jos Oomens, Jordy Bouwman   +5 more
wiley   +1 more source