ORTHO-H 2 AND THE AGE OF INTERSTELLAR DARK CLOUDS [PDF]
Astrophysical Journal Letters, 2011 International audienceInterstellar dark clouds are the sites of star formation. Their main component, dihydrogen, exists under two states, ortho and para.
L Pagani, E Roueff
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Optical interstellar lines in dark clouds [PDF]
The Astrophysical Journal, 1973 Observations of the equivalent widths and radial velocities of the interstellar lines of Ca ii, Na i, CH, and CH^+ are presented for 30 stars. A special effort was made to observe stars behind or within dense clouds with up to 3 mag of absorption.
Cohen, Judith G.
core +4 more sources
Detection of interstellar hydrogen sulfide in cold, dark clouds
Astrophysical Journal, 1989 The published version is located at http://adsabs.harvard.edu/full/1989ApJ...345L..63MInterstellar H2S has been detected toward the cold, dark clouds L134N and TMC 1.
Y C Minh, W M Irvine, L M Ziurys
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The 15 273 Å diffuse interstellar band in the dark cloud Barnard 68 [PDF]
Astronomy & Astrophysics, 2017 International audienceHigh obscuration of background stars behind dark clouds precludes the detection of optical diffuse interstellar bands (DIBs) and hence our knowledge of DIB carriers in these environments.
Rosine Lallement +5 more
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The two chemical phases of dark interstellar clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 We show that there exist two phases in the chemical equilibrium state of dark interstellar clouds, according to the local value of the density, n H , and cosmic ray ionization rate, ζ. For a given value of ζ, the ion-neutral chemistry at high density is driven by proton transfer with H 3 + while at low density charge transfer with H + dominates. The
G Pineau Des Forêts, D R Flower
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First Principles Rovibronic Absorption Spectra of HF Molecule. [PDF]
J Comput ChemHydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Abu El Kher N +5 more
europepmc +2 more sources
Dark ice chemistry in interstellar clouds
, 2020 This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores. Astronomical ice observations are also presented and are
Qasim, D.N.
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THE INFLUENCE OF INTERSTELLAR DUST ON THE CHEMICAL COMPOSITION OF DARK INTERSTELLAR MOLECULAR CLOUDS
, 2013 TUMŠAJOS STARPZVAIGŽŅU GĀZU-PUTEKĻU MIGLĀJOS ESOŠO PUTEKĻU IETEKME UZ ŠO MIGLĀJU ĶĪMISKO SASTĀVU Anotācija Viens aktuālajiem astrofizikas pētījumu priekšmetiem ir zvaigžņu un planētu sistēmu veidošanās.
Juris Kalvāns, Kalvāns, Juris
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Dark clouds in the vicinity of the emission nebula Sh2-205: interstellar extinction and distances [PDF]
, 2016 Results of CCD photometry in the seven-colour Vilnius system for 922 stars down to V = 16–17 mag and for 302 stars down to 19.5 mag are used to investigate the interstellar extinction in an area of 1.5 square degrees in the direction of the P7 and P8 ...
J. Zdanavičius +7 more
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A difference in the distribution of two carriers of diffuse interstellar bands within the Taurus dark clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 Adrian Webster
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