NDLI: Analysis of ultraviolet spectrophotometric data from copernicus

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Analysis of ultraviolet spectrophotometric data from copernicus

Content Provider	NASA Technical Reports Server (NTRS)
Author	Snow Jr., T. P.
Copyright Year	1979
Description	Ultraviolet spectral data from the OAO 3 satellite are being used to study interstellar absorption lines and stellar and circumstellar lines in hot stars. The interstellar data are beneficial in analyzing the depletions of heavy elements from the gas phase and in elucidating how these depletions depend on physical conditions. Abundances in separate velocity components were determined from line profiles. Observations were carried out for interstellar abundances, both atomic and molecular, towards a number of stars. The better quality data are being analyzed for profile information and the lesser data are being used in curve-of-growth analyses. Molecular observations were carried out as well, N2 was sought; interstellar C2 was detected and its rotational excitation utilized to establish limits in interstellar cloud temperatures. An extensive search for H2O resulted in a tentative identification which will produce new information on chemical reaction rates. Interstellar depletions and grain properties in the rho Ophiuchi cloud, stellar wind variability, and circumstellar lines are also under study.
File Size	993116
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19790012771
Archival Resource Key	ark:/13960/t9h46j50f
Language	English
Publisher Date	1979-04-17
Access Restriction	Open
Subject Keyword	Astronomy Stellar Winds Stellar Envelopes Stellar Mass Oao 3 Ultraviolet Spectrophotometers Stellar Spectrophotometry Planetary Nebulae Line Spectra Interstellar Gas Ultraviolet Astronomy Interstellar Matter 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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