Results 61 to 70 of about 9,110 (204)

Redefining proton affinity for heteronuclear molecular species: quantum chemical insights

Discover Chemistry
One of the main problems with experimental methods for detecting proton affinity (PA) is that they cannot perform site-specific protonation. For heteronuclear molecular species that have two or more protonation sites, the experimental PA measurement only
E. E. Etim, J. P. Shinggu, H. S. Samuel, B. Bako, D. K. Sahoo, L. Mweene, S. Kaya   +6 more
doaj   +1 more source

A numerical approach to model chemistry of complex organic molecules in a protoplanetary disk

Open Astronomy, 2022
Multiphase astrochemical modeling presents a numerical challenge especially for the simulation of objects with the wide range of physical parameters such as protoplanetary disks.
Kiskin Mikhail Yu., Vasyunin Anton I., Akimkin Vitaly V.   +2 more
doaj   +1 more source

HC_nH⁻ Anion Chains with n ≤ 8 Are Nonlinear and Their Permanent Dipole Makes Them Potential Candidates for Astronomical Observation

Molecules, 2022
To be detectable in space via radio astronomy, molecules should have a permanent dipole moment. This is the plausible reason why HCnH chains are underproportionally represented in the interstellar medium in comparison with the isoelectronically ...
Ioan Bâldea
doaj   +1 more source

Water Vapor in the Inner 25 AU of a Young Disk around a Low-Mass Protostar

, 2010
Water is one of the key molecules in the physical and chemical evolution of star- and planet-forming regions. We here report the first spatially resolved observation of thermal emission of (an isotopologue of) water with the Plateau de Bure ...
Jorgensen, Jes K., van Dishoeck, Ewine F.   +1 more
core   +1 more source

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

Interstellar formation of lactaldehyde, a key intermediate in the methylglyoxal pathway

Nature Communications
Aldehydes are ubiquitous in star-forming regions and carbonaceous chondrites, serving as essential intermediates in metabolic pathways and molecular mass growth processes to vital biomolecules necessary for the origins of life.
Jia Wang, Chaojiang Zhang, Joshua H. Marks, Mikhail M. Evseev, Oleg V. Kuznetsov, Ivan O. Antonov, Ralf I. Kaiser   +6 more
doaj   +1 more source

Open questions on the interaction dynamics of molecules and clusters in the gas phase

Communications Chemistry, 2022
Emerging experimental techniques combined with theoretical advances allow unprecedented studies of the dynamics of gas phase molecules and clusters induced in interactions with photons, electrons, or heavy particles.
Michael Gatchell, Henning Zettergren
doaj   +1 more source

Spectral Signatures of Hydrogen Thioperoxide (HOSH) and Hydrogen Persulfide (HSSH): Possible Molecular Sulfur Sinks in the Dense ISM

Molecules, 2022
For decades, sulfur has remained underdetected in molecular form within the dense interstellar medium (ISM), and somewhere a molecular sulfur sink exists where it may be hiding. With the discovery of hydrogen peroxide (HOOH) in the ISM in 2011, a natural
Charles Z. Palmer, Ryan C. Fortenberry, Joseph S. Francisco   +2 more
doaj   +1 more source

Warm Cores around Regions of Low-Mass Star Formation

, 2010
Warm cores (or hot corinos) around low-mass protostellar objects show a rich chemistry with strong spatial variations. This chemistry is generally attributed to the sublimation of icy mantles on dust grains initiated by the warming effect of the stellar ...
André, Bergin, Bisschop, Bottinelli, Caux, Cazaux, Ceccarelli, Ceccarelli, Ceccarelli, Ceccarelli, Ceccarelli, Ceccarelli, Ceccarelli, Ceccarelli, Collings, Collings, Collings, David A. Williams, Garrod, Geppert, Hatchell, Herbst, Hollis, Le Teuff, Lepp, Maret, Mark P. Collings, Molinari, Nomura, Rawlings, Sakai, Schöier, Serena Viti, Shu, Tielens, Van Dishoeck, Viti, Wakelam, Watanabe, Zainab Awad   +39 more
core   +1 more source

Astrochemistry

Plasma Sources Science and Technology, 2015
In the last 40 years a wide range of molecules, including neutrals, cations and anions, containing up to 13 atoms—in addition to detections of C60 and C70 — have been found in the harsh environment of the interstellar medium. The exquisite sensitivity and very high spectral and, more recently, spatial resolution, of modern telescopes has enabled the ...
openaire   +3 more sources