Chemical Composition of Interstellar Material
, 1985 Abundances in Interstellar clouds, as determined from interstellar absorption lines, are discussed first, including abundances in ‘abnormal’ (high-velocity) clouds.
Pottasch, S. R.
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Absolute dimensions of eclipsing binaries. XXVI, Setting a new standard : masses, radii, and abundances for the F-type systems AD Bootis, VZ Hydrae, and WZ Ophiuchi [PDF]
, 2008 Context. Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and cosmology. Aims.
Southworth, J. +19 more
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Disk evolution, element abundances and cloud properties of young gas giant planets [PDF]
, 2014 ChHc and PBR highlights financial support of the European Community under the FP7 program by an ERC starting grant. PW, IK, and WFT acknowledge funding from the European Union Seventh Framework Programme FP7-2011 under grant agreement No.
Kamp, I. +19 more
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Combustion Analysis of a Meteorite Debris
, 2010 In this research paper, nature and origins of a meteorite debris identified near village Lehri in district Jhelum, Pakistan have been determined. Total carbon content of a specimen of the meteorite debris is determined using combustion analysis and this ...
Saheeb Ahmed Kayani
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Optimizing End-to-End System Performance for Millimeter and Submillimeter Spectroscopy of Protostars: Wideband Heterodyne Receivers and Sideband-Deconvolution Techniques for Rapid Molecular-Line Surveys [PDF]
, 2011 This thesis describes the construction, integration, and use of a new 230-GHz ultra-wideband heterodyne receiver, as well as the development and testing of a new sideband-deconvolution algorithm, both designed to enable rapid, sensitive molecular-line ...
Sumner, Matthew Casey
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The abundance of interstellar lithium
The Astrophysical Journal, 1984 The interstellar Li I 6707-A absorption line is detected toward Rho Oph A at an equivalent width of 3.1 + or - 1.9 (3 sigma)mA. Upper limits near 1 mA also are found toward seven other stars, including 55 Cyg, toward which relatively strong Li I absorption was previously reported.
openaire +1 more source
The Effect of an Inert Solid Reservoir on Molecular Abundances in Dense Interstellar Clouds
, 2012 The question, what is the role of freeze-out of chemical species in determining the molecular abundances in the interstellar gas is a matter of debate.
Juris Kalvāns, Ivar Shmeld
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Interstellar magnesium abundances
The Astrophysical Journal, 1984 An improved evaluation of the Mg II 1240 A doublet oscillator strength is used in conjunction with recently published Copernicus observations to derive accurate Mg II column densities toward 74 stars. These imply an average of 40 percent of interstellar magnesium is in the gaseous phase.
M. J. Murray +3 more
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The Abundance of Interstellar Boron
The Astrophysical Journal, 2000 Accepted for publication in The Astrophysical Journal. 13 pages, including 2 tables and 4 figures. Also available at http://fuse.pha.jhu.edu/~howk/Papers/
Howk, J. Christopher +2 more
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International Journal of Chemical Kinetics, EarlyView.ABSTRACT In the interstellar medium, chemical reactions proceed under conditions vastly different to those on Earth; these include extremely low temperatures and densities and take place in the gas phase and on water–ice grains. Understanding the energetics and more importantly the kinetics of such reactions is of relevance to the consequences on how ...
Judith Wurmel, John M. Simmie
wiley +1 more source