Winds and clouds in the interstellar medium
A comparison of shock-cloud and wind-cloud interactions: the longer survival of clouds in winds
... reduced. Clouds in winds with higher M wind also do not experience a transmitted shock through the cloud’s rear and are more compressed ...addition, clouds in high Mach number winds are able ...
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AGN-driven winds and ionized clouds moving along the jet in PKS
... EELR in RG Such precise alignments, EELR - radio axes, are contrary to what would be expected for illumination of a central source… The passage of the radio jet through the ISM drives strong shock waves into warm ...
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Composition and Evolution of Interstellar Clouds
... In brief, during a star’s life on the main sequence, H fuses into He primarily through three temperature-dependent proc- esses: two proton-proton reactions and the CNO bi-cycle. In the CNO cycle, He is a primary product ...
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Turbulence in the interstellar medium
... insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the ...
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Probing the diffuse interstellar medium with diffuse interstellar bands
... essary for the code to execute. A colour table was set so that fitting lines could be over plotted in a contrasting colour. A catalogue of all the spectra was read in and the information stored in the temporary memory ...
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Interstellar dust within the life cycle of the interstellar medium
... dense clouds or during the collapse of dense molecular ...in interstellar clouds, the proposed mechanism for grain growth in the ISM is via accretion of atoms and molecules from the gas phase onto ...
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Heating & Cooling in the Interstellar Medium
... where α B is the case B recombination coe cient for hydrogen, for which numerical values are given by equation (5.3). Neutral gas By de nition, hydrogen is almost entirely neutral in the `diuse neutral clouds' ...
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Hydrocarbon Anions in Interstellar Clouds and Circumstellar Envelopes
... [email protected] ABSTRACT The recent detection of the hydrocarbon anion C 6 H − in the interstellar medium has led us to investigate the synthesis of hydrocarbon anions in a variety of ...
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(New) molecular ions in the interstellar medium
... molecular clouds such as B 1 and special conditions are definitively required to allow the presence of this molecular ion, as no debate is opened on the ionic property of the ...
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Thermal desorption of water ice in the interstellar medium
... molecular clouds and comets, it is necessary to understand the freeze-out, potential surface reac- tivity, and desorption mechanisms of such molecular ...under interstellar conditions, are ...dense ...
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Cyanopolyynes as Organic Molecular Wires in the Interstellar Medium
... the interstellar model so that cyanopolyynes as complex as HC 23 N were ...dense clouds, but reactions between the radical C 2 H and smaller cyanopolyynes were far more important in the IRC+10216 envelope ...
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Numerical studies of the interstellar medium on galactic scales
... HI clouds, which correspond to the sites of intense star ...cold clouds move about in the galaxy they are in turn destroyed by mechanical feedback from the stars to perpetuate the cycle of star formation, ...
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Search for fullerenes and PAHs in the diffuse interstellar medium
... are detected at and 9632 increasing with The slight wavelength shifts up to 1.3 and different profiles are partly associated with the velocity distribution of interstellar clouds along the line of sight and ...
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The chemistry of transient microstructures in the diffuse interstellar medium
... diffuse clouds is that the region of interest into the slab transversely to the line of sight is restricted to ∼ 10 au and to a very short evolutionary age, typically less than 10 3 ...
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Synthesized grain size distribution in the interstellar medium
... molecular clouds in addition to dif- fuse ISM phases improves the fit to the observed depletion, but they did not explicitly show the effects of molecular clouds on the extinction ...
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Consequences of the Solar System passage through dense interstellar clouds
... stellar winds from young solar type stars with different ages and indicate that the winds of the young Sun could possibly be 100–1000 times more intense than at present (Lammer et ...HI clouds would ...
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CiteSeerX — The Distribution of Pressures in a Supernova-Driven Interstellar Medium. I. Magnetized Medium
... compressions on the negative side and rarefactions on the positive side appearing nearly equally common. This supports the idea that the density and pressure fluctuation spectra are generated by repeated compressions and ...
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Icy dust grains in the interstellar medium : their properties and impact
... 151 variety of molecules both with a permanent dipole moment, such as N 2 O [9–11] and CO [12], and molecules with induced dipoles moments such as CO 2 [13], CF 4 [14]. Up until this point of this thesis, an ...
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Studies of dust and gas in the interstellar medium of the Milky Way
... is heated and ionized by FUV and EUV photons escaping from HII regions (Wolfire et al., 2003). While these phases are often considered to be in thermal equilibrium and in pressure balance, the observed large turbulent ...
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The evolution of the cold interstellar medium in galaxies following a starburst
... Over time, one may expect a slow depletion of the gas reservoir due to star formation, with typical time-scales of 0.3 Gyr related to disc dynamical time-scales (Lehnert & Heckman 1996, K98). A much larger sample may be ...
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