Thermal desorption of water ice in the interstellar medium [PDF]
, 2001 Water (H2O) ice is an important solid constituent of many astrophysical environments. To comprehend the role of such ices in the chemistry and evolution of dense molecular clouds and comets, it is necessary to understand the freeze-out, potential surface
Collings, Mark P. +10 more
core +5 more sources
High‐Pressure Carbonaceous Phases as Minerals
Geophysical 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
Search for molecular oxygen in dense interstellar clouds
The Astrophysical Journal, 1985 The published version is located at http://adsabs.harvard.edu/full/1985ApJ...289 ...
GOLDSMITH, PF +5 more
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CN and HCN in Dense Interstellar Clouds [PDF]
The Astrophysical Journal, 2005 We present a theoretical investigation of CN and HCN molecule formation in dense interstellar clouds. We study the gas-phase CN and HCN production efficiencies from the outer photon-dominated regions (PDRs) into the opaque cosmic-ray dominated cores. We calculate the equilibrium densities of CN and HCN, and of the associated species C+, C, and CO, as ...
Boger, Gai I., Sternberg, Amiel
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Cyanoacetylene in dense interstellar clouds
The Astrophysical Journal, 1976 Statistical equilibrium calculations were performed and matched to the observations of several sources. These calculations indicate the following: homogeneous cloud models are inadequate for at least one source, Sgr B2, for which a two-component (core-halo) model is presented; the observed lines of HC/sub 3/N are usually, if not always, optically thin;
M. Morris +3 more
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The Astrophysical Journal Letters, 2023 Observations of OH ^+ are used to infer the interstellar cosmic ray ionization rate in diffuse atomic clouds, thereby constraining the propagation of cosmic rays through and the shielding by interstellar clouds, as well as the low energy cosmic ray ...
Ábel Kálosi +14 more
doaj +1 more source
Hydrated sulphuric acid in dense molecular clouds [PDF]
, 2017 We consider sulphur depletion in dense molecular clouds, and suggest hydrated sulphuric acid, H2SO4 · nH2O, as a component of interstellar dust in icy mantles.
Klemperer, William +4 more
core +1 more source
The Formation of Large Hydrocarbons and Carbon Clusters in Dense Interstellar Clouds [PDF]
, 1997 Current gas-phase models of dense cloud chemistry contain molecules through approx 10 atoms in size. We have extended two current reaction networks to include unsaturated hydrocarbons and bare carbon clusters up to 64 carbon atoms in size.
Herbst, Eric, Bettens, R. P. A.
core +1 more source
Chemistry in Dense Interstellar Clouds - Data Requirements [PDF]
Highlights of Astronomy, 1989 ABSTRACTChemical models of dense interstellar clouds are reviewed with particular emphasis on recent results. The need for theoretical and experimental data on rate coefficients is pointed out and some observational studies are suggested.
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Chemistry of chlorine in dense interstellar clouds [PDF]
The Astrophysical Journal, 1986 Laboratory experiments and theoretical modeling show that the chemistry of chlorine is fairly simple in dense interstellar clouds, with Cl and HCl as the only species whose fractional abundances are significant. The estimated fraction of gas-phase chlorine present as HCl lies between 25-65 percent, in good agreement with the recent observations of the ...
Blake, Geoffrey A. +2 more
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