Results 101 to 110 of about 5,560 (224)
GalaxiesThis work is dedicated to the study of interstellar medium (ISM) along the line of sight (LOS) of the transient low-mass X-ray binary, MXB 1659-298, capitalizing the high resolving power of XMM-Newton in the soft energy range.
Rabindra Mahato +2 more
doaj +1 more source
Infrared absorption and emission characteristics of interstellar PAHs
, 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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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
, 1975 $^{1}$ J. A. Duardo, Interstellar $H_{2}$ Narrow and Diffuse Line Absorption"", Twenty-Ninth Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June, 1974.""""Author Institution: Xerox Electro-Optical SystemsA total of fourteen
Duardo, J. A.
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A study of extended red emission in reflection nebulae [PDF]
, 1994 In the first part of this thesis spectroscopic observations of the Red Rectangle nebula are presented. A link is made between the most prominent unique emission line features, which are superimposed on the broad emission spectrum of the Red Rectangle ...
Watkin, Susan, Watkin, S
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Diffuse interstellar bands towards ο Per and ξ Per
, 2012 Spectroscopic characteristics of interstellar matter vary strongly with the direction to the target star. Spectra of oPer and ξ Per contain many prominent and weak diffuse interstellar bands as well as absorption lines of some identiffed interstellar ...
Debudej, A. +3 more
core +1 more source
Loop I/NPS Morphology Predictions in the Ultralong-wavelength Band
The Astrophysical JournalLoop I/North Polar Spur (NPS) is the giant arc structure above the Galactic plane observed at radio wavelengths (≲10 GHz). There has been long-standing debate about its origin. While many people believe that it consists of nearby supernova remnants (SNRs)
Yanping Cong +5 more
doaj +1 more source
Photochemistry of interstellar molecules
, 1971 The photochemistry of two diatomic and eight polyatomic molecules is discussed quantitatively. For an interstellar molecule, the lifetime against photodecomposition depends upon the absorption cross section, the quantum yield or probability of ...
Stief, L. J.
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The nature and origin of disky elliptical galaxies [PDF]
, 2002 The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
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The interstellar oxygen-K absorption edge as observed by XMM-Newton
, 2003 High resolution X-ray spectra of the Reflection Grating Spectrometer (RGS) on board the XMM satellite are used to resolve the oxygen K absorption edge. By combining spectra of low and high extinction sources, the observed absorption edge can be split in ...
F. B. Paerels +5 more
core +1 more source