Titlebook: Solar System History from Isotopic Signatures of Volatile Elements; Volume Resulting fro R. Kallenbach,T. Encrenaz,F. Robert Book 2003 Spri

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Immunotherapy

Isotopes of Volatiles in Pre-Solar Grainslements (noble gases). Their isotopic corn-positions generally are unlike anything seen in matter of solar-system origin. The large variations are indicative of the various stellar sources and various processes of nucleosynthesis by which they were created.

一条卷发

战役

Deuterium in Molecules of the Interstellar Mediumecent observational studies of deuterated molecules ranging from the VUV to the millimeter wavelength range. We outline some sources of uncertainties on the deuterium fractionation and on the subsequent derivation of the elemental deuterium to hydrogen ratio. Steady state versus time dependent model

AFFIX

Deuterium Fractionation in Interstellar Clouds a low temperature phenomenon and discuss how the degree of enhancement of the deuterium content of molecules is related to the physical conditions, particularly abundances, in molecular clouds. If significant amounts of abundant species, such as CO, are frozen out on to interstellar dust grains, th

integrated

Organization

Evolution of the Protosolar Nebula and Formation of the Giant Planetsls of evolution of circumstellar disks are reviewed here with emphasis on the so-called “alpha models” in which angular momentum is transported outward by turbulent viscosity, parameterized by an dimensionless parameter a. A simple ID model of protoplanetary disks that includes gas and embedded part

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Element Abundances and Isotope Ratios in the Giant Planets and Titanion about the formation and evolution of these objects. Element abundances, especially after the results of the Galileo Probe Mass Spectrometer in Jupiter, strongly support the formation model invoking an initial core formation (Mizuno, 1980; Pollack .. 1996). They also suggest that solar compositio

千篇一律

Isotopic Abundances in Comets Solar Nebula. We review here measurements acquired on the D/H, .C/.C, .O/.O, .N/.N, .S/.S ratios in dust and gases, and discuss their cosmogonic implications. The prospects for future measurements from cometary space missions and remote sensing observations at millimeter and submillimeter wavelengt