NDLI: Boundary conditions for the paleoenvironment: chemical and physical processes in the pre-solar nebula (Document No: 19870009882)

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Boundary conditions for the paleoenvironment: chemical and physical processes in the pre-solar nebula (Document No: 19870009882)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Schloerb, F. Peter Irvine, William M.
Copyright Year	1987
Description	Detailed study of the first interstellar hydrocarbon ring, cyclopropenylidene (C3H2), is continuing. The singly deuterated isotope of this molecule, C3HD, was observed in several cold interstellar clouds. The results of a large survey for C3H2 in galactic sources of various types will soon be completed. It appears that cyclopropenylidene is present in virtually all interstellar clouds of at least moderate density. In order to make the first determinations of the CO2/CO abundance ratio in interstellar sources, observations of protonated CO2 were pursued. The spectrum from 18.5 to 22 GHz for several interstellar clouds is being systematically measured. Particular attention is being given to the cold, dark clouds TMC-1 and L124N, which may be formation sites for solar mass stars. The phenomena of maser emission from molecules of methanol is being studied in certain interstellar clouds. A comparison of 1 millimeter continuum emission from dust with the column density of carbon monoxide as determined from the rare C(18)O isotope for 4 molecular clouds in the Galaxy is nearing completion. Papers published during the period of this report are listed.
File Size	417429
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870009882
Archival Resource Key	ark:/13960/t3qv8dp73
Language	English
Publisher Date	1987-02-01
Access Restriction	Open
Subject Keyword	Astronomy Star Formation Interstellar Chemistry Molecular Clouds Emission Spectra Masers Hydrocarbons Chemical Reactions Abundance Boundary Conditions Infrared Spectra Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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