Results 21 to 30 of about 30,505 (211)

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.
openaire   +1 more source

The Turbulent Interstellar Medium [PDF]

, 2006
An overview is presented of the main properties of the interstellar medium. Evidence is summarized that the interstellar medium is highly turbulent, driven on different length scales by various energetic processes.
Andreas Burkert, Balbus, Ballesteros-Paredes, Bergin, Blitz, Blondin, Bonnell, Burkert, Burkert, Burkert, Cappellaro, Cowie, de Avillez, de Avillez, Dib, Dib, Dickey, Dickey, Dziourkevitch, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Falgarone, Field, Field, Forster Schreiber, Gazol, Hartmann, Hartmann, Hartmann, Hartmann, Heiles, Heitsch, Heitsch, Hennebelle, Hennebelle, Jenkins, Kanekar, Kerp, Kessel-Deynet, Kim, Kim, Kim, Klein, Klessen, Kolmogorov, Koyama, Kritsuk, Kritsuk, Larson, Mac Low, Mac Low, Mac Low, McKee, Palla, Piontek, Puche, Rhode, Scalo, Scalo, Sellwood, Slyz, Stone, Tran, Vishniac, von Weizsäcker, Vázquez-Semadeni, Wada, Walder, Walder, Williams   +73 more
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A Herschel [C II] Galactic plane survey II: CO-dark H2 in clouds [PDF]

, 2014
ABRIDGED: Context: HI and CO large scale surveys of the Milky Way trace the diffuse atomic clouds and the dense shielded regions of molecular hydrogen clouds.
Goldsmith, P. F., Langer, W. D., Pineda, J. L., Velusamy, T., Willacy, K.   +4 more
core   +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, SNELL, RL, Erickson, NR, DICKMAN, RL, SCHLOERB, FP, Irvine, WM   +5 more
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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., Anicich, V. G., Huntress, W. T., Jr.   +2 more
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Interstellar processes: Ortho/para conversion, radiative association, and dissociative recombination

EPJ Web of Conferences, 2015
The study of the ortho-to-para ratio of assorted gas-phase interstellar molecules such as H2, H2O, NH3, and H2O+ has gained interest in recent years, based partially on new spectral observations of light hydrides by the Herschel Space Observatory ...
Herbst Eric
doaj   +1 more source

The Role of Magnetic Field in Molecular Cloud Formation and Evolution

Frontiers in Astronomy and Space Sciences, 2019
We review the role that magnetic field may have on the formation and evolution of molecular clouds. After a brief presentation and main assumptions leading to ideal MHD equations, their most important correction, namely the ion-neutral drift is described.
Patrick Hennebelle, Patrick Hennebelle, Shu-ichiro Inutsuka   +2 more
doaj   +1 more source

Where Does the Energy Go during the Interstellar NH3 Formation on Water Ice? A Computational Study

The Astrophysical Journal, 2023
In the coldest (10–20 K) regions of the interstellar medium, the icy surfaces of interstellar grains serve as solid-state supports for chemical reactions.
Stefano Ferrero, Stefano Pantaleone, Cecilia Ceccarelli, Piero Ugliengo, Mariona Sodupe, Albert Rimola   +5 more
doaj   +1 more source

Deuterium fractionation in dense interstellar clouds

The Astrophysical Journal, 1989
The time-dependent gas-phase chemistry of deuterium fractionation in dense interstellar clouds ranging in temperature between 10 and 70 K was investigated using a pseudo-time-dependent model similar to that of Brown and Rice (1986). The present approach, however, considers much more complex species, uses more deuterium fractionation reactions, and ...
Millar, TJ, Bennett, A., Herbst, E.
openaire   +1 more source

The chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds

, 2005
We present a theoretical investigation of the chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds. The chemistry of interstellar fluorine is qualitatively different from that of any other element, because - unlike the ...
Neufeld, David A., Schilke, Peter, Wolfire, Mark G.   +2 more
core   +1 more source