Results 151 to 160 of about 1,217 (186)

Instantaneous formation of interstellar minerals and mineral quantum dots. [PDF]

RSC Adv
Roy A, Singh SV, Ramachandran R, Meka JK, Ambresh M, Vijay T, Janardhan P, Jayaram V, Venkatraman V, Das A, Hill H, Bhardwaj A, Mason NJ, Sivaraman B.   +13 more
europepmc   +1 more source

Isotopic chirality and high-resolution gigahertz and terahertz spectroscopy of <i>trans</i>-2,3-dideutero-oxirane (<i>tc</i>-CHDCHDO).

Phys Chem Chem Phys
Chen Z, Albert S, Keppler K, Wichmann G, Quack M, Schurig V, Trapp O.   +6 more
europepmc   +1 more source

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Absorption Line Spectroscopy of the Interstellar Medium

1983
Absorption line studies of the interstellar medium are described. The discussion is in three parts. The first describes current views of diffuse interstellar clouds, while the second reports the results of recent extensive surveys of interstellar regions. The final part is an outline of possible future observations.
exaly   +2 more sources

Investigation into broad interstellar absorption lines

Astronomical & Astrophysical Transactions, 2003
Diffuse interstellar bands (DIBs) are investigated mainly with high-resolution spectroscopy, which allows very fine structures to be detected. However, the rapidly increasing resolution of echelle spectra becomes a disadvantage when broad absorption structures are involved.
openaire   +1 more source

Interstellar Emission and Absorption Lines

2012
Interstellar emission and absorption lines are discussed, including optical recombination lines, the 21cm hydrogen line, and broad lines such as the interstellar Lyman-alpha line. This chapter ends with a discussion of the curve of growth.
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Variable interstellar absorption lines: a brief review

Astrophysics and Space Science, 2003
I review the recent discoveries of variable interstellar absorption lines, widely taken to imply the existence of very small scale(10–100 AU) structure in the interstellar medium. Possible origins of this structure are discussed, and attention is drawn to the fact that most known examples seem to be associated with interstellar shells and bubbles of ...
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Interstellar Absorption-Line Observations of the Magellanic Clouds

2008
A brief overview of the interstellar absorption-line observations of the Magellanic clouds is given, with particular emphasis on the results obtained by the ESO Key-Program for the Magellanic Clouds. It is shown that high resolution interstellar observations towards bright MCs sources can probe the large scale distribution of the interstellar gas ...
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Variable interstellar absorption lines in young stellar aggregates

Monthly Notices of the Royal Astronomical Society, 2018
The variability of interstellar atomic lines, sporadically reported in the astronomical literature, has been confirmed both in the case of the nearby hot star delta Ori and the very young and violent star-forming region eta Carinae, using high-resolution echelle spectra. The presented variability concerns the intensities and profiles of Na I, KI and Ca
J Krełowski, A Strobel, S Vješnica, D Melekh, A Bondar   +4 more
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Tentative identification of the diffuse interstellar absorption bands and of a diffuse interstellar doublet line

Astrophysics and Space Science, 1969
The four diffuse interstellar absorption bands at λ4430, λ4760, λ4890, and λ6180 and the two diffuse lines at λ5780 and λ5797 are interpreted as belonging to pre-ionization transitions in H− and O−, respectively. In both cases the identifications are supported by extrapolations of wave numbers of resonance lines along isoelectronic sequences.
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Rapid Temporal Variations of Interstellar Absorption Lines in the Carina Nebula

The Astrophysical Journal, 2001
Two observations of the complex interstellar absorption-line profiles in the UV spectrum of CPD -59°2603, obtained 22 months apart in the R ~ 110,000 mode of the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, reveal substantial variations in the intensities of several high-velocity components, including the virtual disappearance of
Anthony C. Danks, Nolan R. Walborn, Gladys Vieira, Wayne B. Landsman, Joel Gales, Beatriz García   +5 more
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