NDLI: Uv spectroscopy of low-redshift active galaxies

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Uv spectroscopy of low-redshift active galaxies

Content Provider	NASA Technical Reports Server (NTRS)
Author	Wu, C.-C. Crenshaw, M.
Copyright Year	1993
Description	Ultraviolet spectra of bright Seyfert 1 galaxies will be obtained with the Hubble Space Telescope. Observations will be used to pursue the following goals: (1) Broad and narrow components of the strong emission lines will be deconvolved. (2) Broad-line profiles will be extracted for comparison with kinematic models; line ratios will be determined. (3) Many weak UV and emission lines from optical spectra will be compared for reddening along line of sight and chemical composition. (4) Absorption lines from Galactic halo, intergalactic medium and Seyfert galaxy will be used to establish physical conditions/chemical composition of the gas. (5) Strong emission Fe II in the UV will be used to determine FE II/L-alpha ratios for comparison with photoionization models. Other tasks relating to GTO 1170 program will be performed. It appears that NLR clouds in NGC 5548 experience much higher level of ionizing flux than those Seyfert 2 galaxies. Future observations will determine if this result extends to other Seyfert 1 galaxies.
File Size	127353
Page Count	3
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940029398
Archival Resource Key	ark:/13960/t8sb90q88
Language	English
Publisher Date	1993-06-21
Access Restriction	Open
Subject Keyword	Astronomy Stellar Spectra Gas Composition Seyfert Galaxies Ultraviolet Radiation Halos Photoionization Emission Spectra Ultraviolet Spectroscopy Ultraviolet Spectra Hubble Space Telescope Intergalactic Media Line 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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