Results 21 to 30 of about 944,715 (218)
CO TO H2 RATIO OF INTERSTELLAR MOLECULAR CLOUDS IN THE DIRECTIONS OF EARLY TYPE STARS [PDF]
Journal of Astronomy and Space Sciences, 2004 We present measurements of interstellar CO absorption lines in the spectra of 7 early-type stars that were observed with the FUSE(Far Ultraviolet Spectroscopic Explorer).
Jae-Woo Park +2 more
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Dust evolution, a global view: III. Core/mantle grains, organic nano-globules, comets and surface chemistry [PDF]
Royal Society Open Science, 2016 Within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS), this work explores the surface processes and chemistry relating to core/mantle interstellar and cometary grain structures and their influence on the nature ...
A. P. Jones
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Chemistry, 2021 Few anions exhibit electronically excited states, and, if they do, the one or two possible excitations typically transpire beyond the visible spectrum into the near-infrared.
Taylor J. Santaloci, Ryan C. Fortenberry
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Interstellar Absorption of Some Be Stars [PDF]
International Astronomical Union Colloquium, 1987 It is well known that the intrinsic colors of Be stars are not the same as those of “normal” B stars and they are often redder. So interstellar absorption of Be stars determined from photometric indices may be overestimated. In order to avoid this, a method often used to determine the interstellar absorption of Be stars is based on the ultraviolet ...
D. Briot, J. Zorec
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δ Orionis: Further temporal variability and evidence for small-scale structure in the interstellar medium [PDF]
, 2001 We report here the detection of both spatial and temporal variations in interstellar absorption in the line of sight to δ Orionis. First, we present new high-resolution (R≈110 000) observations of the interstellar D lines of Na i towards both δ Ori A and
Howarth, ID +5 more
core +1 more source
Narrow absorption lines from intervening material in supernovae
Astronomy & AstrophysicsNarrow interstellar absorption features in supernova (SN) spectra serve as valuable diagnostics for probing dust extinction and the presence of circumstellar or interstellar material.
Gutiérrez Claudia P. +3 more
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A search for interstellar absorptions towards Sgr dSph [PDF]
Astronomy & Astrophysics, 2005 accepted by Astronomy & ...
Monai, S., Bonifacio, P., Sbordone, L.
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Distribution of Interstellar Reddening Material in the Galactic Plane [PDF]
Journal of Astronomy and Space Sciences, 1987 By using the recently determined color excess and distance data of classical cepheids by Kim(1985), the distribution of interstellar reddening material was studied to see the general picture of the average rate of interstellar absorption out to about 7 ...
Chulhee Kim
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Creating a new paradigm for the local interstellar medium–A perspective
Frontiers in Astronomy and Space Sciences, 2023 The interstellar medium close to the Sun called the local ISM (LISM) provides critical insights into physical processes and phenomena in the more distant interstellar medium in our Galaxy without the confusion of many complex structures in the sight ...
Jeffrey L. Linsky, Seth Redfield
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Abundance Ratios of OH/CO and HCO+/CO as Probes of the Cosmic-Ray Ionization Rate in Diffuse Clouds
The Astrophysical Journal, 2023 The cosmic-ray ionization rate (CRIR, ζ _2 ) is one of the key parameters controlling the formation and destruction of various molecules in molecular clouds. However, the current most commonly used CRIR tracers, such as ${{\rm{H}}}_{3}^{+}$ , OH ^+ , and
Gan Luo +8 more
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