NASA Technical Reports Server (NTRS) 19970022911: The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System In The Spectrum Of PG 2302+029--Ejected Or Intervening? - Info and Reading Options
By NASA Technical Reports Server (NTRS)
"NASA Technical Reports Server (NTRS) 19970022911: The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System In The Spectrum Of PG 2302+029--Ejected Or Intervening?" and the language of the book is English.
“NASA Technical Reports Server (NTRS) 19970022911: The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System In The Spectrum Of PG 2302+029--Ejected Or Intervening?” Metadata:
- Title: ➤ NASA Technical Reports Server (NTRS) 19970022911: The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System In The Spectrum Of PG 2302+029--Ejected Or Intervening?
- Author: ➤ NASA Technical Reports Server (NTRS)
- Language: English
Edition Identifiers:
- Internet Archive ID: NASA_NTRS_Archive_19970022911
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"NASA Technical Reports Server (NTRS) 19970022911: The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System In The Spectrum Of PG 2302+029--Ejected Or Intervening?" Description:
The Internet Archive:
We report the discovery of a high-ionization broad absorption line system at a redshift of z(sub abs) = 0.695 in the spectrum of the z(sub em) = 1.052 radio-quiet quasar PG 2302+029. Broad absorption with FWHM from 3000 to 5000 km/s is detected from C iv, N v, and O vi in Hubble Space Telescope (HST) Faint Object Spectrograph spectra of the quasar. A narrow-line system (FWHM approx. 250 km/s) at z(sub abs) = 0.7016 is resolved from the broad blend and includes absorption by Ly alpha and the C iv, N v, and O vi doublets. No absorption by low-ionization metal species (e.g., Si II and Mg II) is detected in the HST or ground-based spectra for either the broad or the narrow system. The centroids of the broad system lines are displaced by approx. 56,000 km/s to the blue of the quasar's broad emission lines. The reddest extent of the broad-line absorption is more than 50,000 km/s from the quasar. The properties of this system are unprecedented, whether it is an intervening or an ejected system.
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