Results 101 to 110 of about 944,715 (218)
On the long-wavelength absorption by interstellar dust
The Astrophysical Journal, 1991 Two proposed modifications to the standard theory for the long-wavelength absorption by interstellar dust grains are shown to be incorrect. The Mie theory for spheres or cylinders, or the discrete dipole approximation for irregular shapes, are based on Maxwell's equations for the electromagnetic field and should be used instead of the modified formula ...
openaire +1 more source
Analysis of the 3.2–3.3 μm Interstellar Absorption Feature on Three Milky Way Sightlines
The Astrophysical JournalWe report new analyses of spectra of the 3.2–3.3 μ m absorption feature observed in the diffuse interstellar medium toward three Milky Way sources: 2MASS J 17470898 − 2829561 (2M1747) and the Quintuplet Cluster, both located in the Galactic center, and ...
L. S. Bernstein, T. R. Geballe
doaj +1 more source
The Astrophysical JournalNewly computed collisional rate coefficients for the excitation of C _2 in collisions with H _2 , presented recently by Najar & Kalugina, are significantly larger than the values adopted previously in models for the excitation of the C _2 molecule, a ...
David A. Neufeld +9 more
doaj +1 more source
Interstellar Seminar course introduces college students to interstellar studies
Newsletter article in issue 30 of Have Starship, Will Travel, the newsletter of the Interstellar Research Group. It's also called IRG Newsletter.Newsletter archive: https://irg.space/newsletters-have-starship-will ...
Schneegurt, Mark A.
core +1 more source
Revisiting the Ultraviolet Spectroscopy of the η Tel Edge-on Debris Disk
The Astronomical JournalWe revisit the ultraviolet absorption spectroscopy of the edge-on debris disk surrounding the A0V star η Telescopii. Previous work found absorption components at four velocities (∼−23, −18, −10, −1 km s ^−1 ), with the most blueshifted component (−23 km
Allison Youngblood +6 more
doaj +1 more source
Interstellar grain mantles [PDF]
, 1986 Interstellar molecular grain mantles are an important component of the interstellar dust inside dense molecular clouds as evidenced by the detection of absorption bands at 2.97, 3.08, 4.61, 6.0 and 6.8 microns.
Witteborn, F. C. +3 more
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The organic component of interstellar grains [PDF]
, 1986 The 3.4 micron absorption feature observed in the spectrum of a number of Galactic Center (GC) sources indicates the presence of organic molecules in the interstellar medium.
Greenberg, J. M., Schutte, W. A.
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, 2013 Neutral hydrogen atoms that travel into the heliosphere from the local interstellar medium (LISM) experience strong effects due to charge exchange and radiation pressure from resonant absorption and re-emission of Lyα.
French, J. +13 more
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Infrared absorption and emission characteristics of interstellar PAHs [PDF]
, 1986 The mid-infrared interstellar emission spectrum with features at 3.28, 6.2, 7.7, 8.7 and 11.3 microns is discussed in terms of the Polycyclic Aromatic Hydrocarbon (PAH) hypothesis, which is based on the suggestive, but inconclusive comparison between the
Barker, J. R. +2 more
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INTERSTELLAR H$_{2}$ NARROW AND DIFFUSE LINE ABSORPTION
, 1974 $^{1}$ J. A. Duardo, ``An Interpretation, of the Diffuse Interstellar Absorption Lines in Terms of Dipole Transitions of $H_{2}$'', Twenty-Sixth Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June 1971.Author Institution ...
Duardo, J. A.
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