Results 231 to 240 of about 10,794 (262)
Some of the next articles are maybe not open access.

Astrochemistry

2021
The answers to some of the most fundamental questions in science lie between the stars, in molecular clouds that serve as celestial laboratories. Disentangling the chemistries in extraterrestrial environments can provide clues about how planets form and shed light on problems in terrestrial chemistry that are difficult to investigate in the lab, and ...
Olivia Harper Wilkins, Geoffrey A. Blake
openaire   +2 more sources

Introduction to Astrochemistry [PDF]

open access: possible, 2003
At first sight, the interstellar medium presents a very hostile environment to the formation and survival of complex molecules. As we have seen, it is crisscrossed by violent shocks and pervaded by intense UV and X-ray radiation fields, which can easily tear apart delicate molecular bonds.
Michael A. Dopita, Ralph S. Sutherland
openaire   +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

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   +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   +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

Building an Astrophysics/Astrochemistry Laboratory fromScratch

The Physics Teacher, 2022
Laboratory astrophysics and astrochemistry are emerging fields highlighting the importance of laboratory simulations and experiments to benefit remote observations.
D. White
semanticscholar   +1 more source

Formation of Para-H2O by Vacuum-UV Photolysis of O2 in Solid Hydrogen: Implication for Astrochemistry.

Journal of Physical Chemistry Letters, 2022
The observation that the ortho to para ratio (OPR) of interstellar H2O is smaller than 3 is an important yet unresolved subject in astronomy. We irradiated O2 embedded in solid H2 at 3 K with vacuum-ultraviolet (VUV) light and observed IR lines ...
Shu-Yu Lin   +4 more
semanticscholar   +1 more source

Astrochemistry and Astrobiology

2013
Aspects of Physical Chemistry.- The Molecular Universe.- Chemical Processes in the Interstellar Medium.- Astrochemistry: Synthesis and Modelling.- Planetary Atmospheres and Chemical Markers for Extraterrestrial Life.- The Importance of Water.- Life, Metabolism and Energy.- Life: The Physical Underpinnings of Replication.- Physical Chemistry.
Ian W. M. Smith   +2 more
openaire   +2 more sources

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.
Benjamin J. McCall, Nick Indriolo
openaire   +3 more sources

Home - About - Disclaimer - Privacy