Results 221 to 230 of about 11,084 (265)

Phosphine Reactivity and Its Implications for Pyrolysis Experiments and Astrochemistry.

Journal of Physical Chemistry A, 2023
Despite the importance of phosphorus-bearing molecules for life and their abundance outside Earth, the chemistry of those compounds still is poorly described. The present study investigates phosphine (PH3) decomposition and formation pathways.
L. Baptista, A. A. de Almeida
semanticscholar   +1 more source

Astrochemistry: Ingredients of life in space

2022
Astrochemistry dives into the evolution of the molecular universe, from the birth of the simplest molecules to the generation of building blocks for planets and possibly life. The universe holds an incredible evolving circular chemistry, where matter is processed and recycled by the birth, life, and death of stars and planets.
Petrignani, A., Candian, A.
openaire   +3 more sources

Review: High-Energy Astrochemistry in the Molecular Interstellar Medium

ACS Earth and Space Chemistry
In the past decade, there has been a significant shift in astrochemistry with a renewed focus on the role of non-thermal processes on the molecular interstellar medium, in particular energetic particles (such as cosmic ray particles and fast electrons ...
B. Gaches, S. Viti
semanticscholar   +1 more source

Cosmic-ray astrochemistry

Chemical Society Reviews, 2013
Gas-phase chemistry in the interstellar medium is driven by fast ion-molecule reactions. This, of course, demands a mechanism for ionization, and cosmic rays are the ideal candidate as they can operate throughout the majority of both diffuse and dense interstellar clouds.
Nick, Indriolo, Benjamin J, McCall
openaire   +2 more sources

The 1.5 μm Band of Cyanoacetylene as a Spectroscopic Target in Astrochemistry.

Journal of Physical Chemistry Letters
The search for prebiotic molecules officially entered a new era with the launch of the James Webb Space Telescope. The capabilities of the near-infrared instrumentation on board offer greater sensitivity and resolution than have ever been available in a ...
Thomas Howard, Sanjana Maheshwari, Grace J Yeh, Shannon E Ganley, Leah G Dodson   +4 more
semanticscholar   +1 more source

Molecular mobility of extraterrestrial ices: surface diffusion in astrochemistry and planetary science.

Physical Chemistry, Chemical Physics - PCCP
Molecules are ubiquitous in space. They are necessary components in the creation of habitable planetary systems and can provide the basic building blocks of life.
N. Ligterink, C. Walsh, H. Cuppen, M. Drozdovskaya, A. Ahmad, D. M. Benoit, J. Carder, A. Das, J. K. Díaz-Berríos, F. Dulieu, J. Heyl, A. Jardine, T. Lamberts, N. M. Mikkelsen, M. Tsuge   +14 more
semanticscholar   +1 more source

Potential Catalytic Role of Small Heterocycles in Interstellar H2 Formation: A Laboratory Astrochemistry Study on Furan and Its Hydrogenated Forms.

Journal of Physical Chemistry A, 2022
It is now well-accepted in astrochemistry that the formation of interstellar H2 is taking place on the surface of interstellar grains. It has also been suggested a long time ago that polyaromatic hydrocarbons (PAHs) can catalyze this process by ...
A. Schneiker, G. Ragupathy, G. Bazsó, G. Tarczay   +3 more
semanticscholar   +1 more source

A Natural Laboratory for Astrochemistry: The Variable Protostar B335

Astrophysical Journal Letters
Emission lines from complex organic molecules in B335 were observed in four epochs, spanning a luminosity burst of about 10 yr duration. The emission lines increased dramatically in intensity as the luminosity increased, but they have decreased only ...
Jeong-Eun Lee, N. Evans, Giseon Baek, Chul-Hwan Kim, Jinyoung Noh, Yao-Lun Yang   +5 more
semanticscholar   +1 more source

Quantum Chemistry and Astrochemistry: A Match Made in the Heavens.

Journal of Physical Chemistry A
Quantum chemistry can uniquely answer astrochemical questions that no other technique can provide. Computations can be parallelized, automated, and left to run continuously providing exceptional molecular throughput that cannot be done through ...
R. C. Fortenberry
semanticscholar   +1 more source

Icy Grain Mantle Surface Astrochemistry of MgNC: The Emergence of Metal Ion Catalysis Studied via Model Ice Cluster Calculations.

Journal of Physical Chemistry A, 2022
One of a small number of known magnesium-containing astromolecules, magnesium isocyanide (MgNC) was first detected in 1986. MgNC is an intriguing reactant to consider: it is an open-shell radical in which its metal atom forms a bond with CN that is a ...
D. Woon
semanticscholar   +1 more source