NDLI: An iso and iue study of planetary nebula ngc 2440

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An iso and iue study of planetary nebula ngc 2440

Content Provider	NASA Technical Reports Server (NTRS)
Author	Wesselius, P. R. Feibelman, W. A. Pottasch, S. R. Salas, J. Bernard
Copyright Year	2002
Description	The infrared and ultraviolet spectra of planetary nebula NGC 2440 is presented. The observations were made respectively by the Infrared Space Observatory (ISO) and International Ultraviolet Explorer (IUE) These data, in conjunction with published optical observations have been used to derive electron temperature and density. A trend of electron temperature with ionization potential is found. In particular the electron temperature increases from 11000 to 18000 K with increasing IBM. The electron density has a constant value of 4500/cu cm in agreement with previous determination. The chemical abundance has been derived for the following elements; helium, carbon, nitrogen, oxygen, neon, sulfur and argon. The ionization correction factor turns out to be very small (almost unnecessary) for all species except sulfur.
File Size	582263
Page Count	9
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020080863
Archival Resource Key	ark:/13960/t8gf5rp18
Language	English
Publisher Date	2002-03-22
Access Restriction	Open
Subject Keyword	Astrophysics Electron Density Concentration Ultraviolet Spectra Ionization Potentials Planetary Nebulae Infrared Spectra Nitrogen Sulfur Infrared Space Observatory Iso Helium Argon Carbon Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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