Matches in SemOpenAlex for { <https://semopenalex.org/work/W1973308546> ?p ?o ?g. }
- W1973308546 endingPage "623" @default.
- W1973308546 startingPage "609" @default.
- W1973308546 abstract "This paper presents an analysis of a Keck HIRES spectrum of the QSO FIRST J104459.6+365605, covering the rest wavelength range from 2260 to 2900 Å. The line of sight toward the QSO contains two clusters of outflowing clouds that give rise to broad blue-shifted absorption lines. The outflow velocities of the clouds range from -200 to -1200 km s-1 and from -3400 to -5200 km s-1, respectively. The width of the individual absorption lines ranges from 50 to more than 1000 km s-1. The most prominent absorption lines are those of Mg II, Mg I, and Fe II, and Mn II is also present. The low-ionization absorption lines occur at the same velocities as the most saturated Mg II lines, showing that the Fe II, Mg I, and Mg II line-forming regions must be closely associated. Many absorption lines from excited states of Fe II are present, allowing a determination of the population of several low-lying energy levels. The populations of the excited levels are found to be considerably smaller than expected for LTE and imply an electron density in the Fe II line-forming regions of ne ~ 4 × 103 cm-3. Modeling the ionization state of the absorbing gas with this value of the electron density as a constraint, we find that the distance between the Fe II and Mg I line-forming region and the continuum source is ~7 × 102 pc. From the correspondence in velocity between the Fe II, Mg I, and Mg II lines we infer that the Mg II lines must be formed at the same distance. The Mg II absorption fulfills the criteria for broad absorption lines defined by Weymann and coworkers. Therefore, the distance we find between the Mg II line-forming region and the continuum source is surprising, since BALs are generally thought to be formed in outflows at a much smaller distance from the nucleus." @default.
- W1973308546 created "2016-06-24" @default.
- W1973308546 creator A5019263107 @default.
- W1973308546 creator A5025741144 @default.
- W1973308546 creator A5032520367 @default.
- W1973308546 creator A5033525147 @default.
- W1973308546 creator A5037072934 @default.
- W1973308546 creator A5072834800 @default.
- W1973308546 creator A5088467669 @default.
- W1973308546 creator A5058168207 @default.
- W1973308546 date "2001-02-20" @default.
- W1973308546 modified "2023-09-30" @default.
- W1973308546 title "Keck HIRES Observations of the QSO FIRST J104459.6+365605: Evidence for a Large‐Scale Outflow" @default.
- W1973308546 cites W1485711733 @default.
- W1973308546 cites W1964809398 @default.
- W1973308546 cites W1972336358 @default.
- W1973308546 cites W1972721631 @default.
- W1973308546 cites W1973861493 @default.
- W1973308546 cites W1976086866 @default.
- W1973308546 cites W1982105669 @default.
- W1973308546 cites W1986880484 @default.
- W1973308546 cites W1988354624 @default.
- W1973308546 cites W2023593853 @default.
- W1973308546 cites W2027901034 @default.
- W1973308546 cites W2029227852 @default.
- W1973308546 cites W2031322812 @default.
- W1973308546 cites W2032927073 @default.
- W1973308546 cites W2035409202 @default.
- W1973308546 cites W2039153199 @default.
- W1973308546 cites W2040541974 @default.
- W1973308546 cites W2056324583 @default.
- W1973308546 cites W2057953757 @default.
- W1973308546 cites W2080697714 @default.
- W1973308546 cites W2105671661 @default.
- W1973308546 cites W2110899101 @default.
- W1973308546 cites W2156747046 @default.
- W1973308546 cites W3098563791 @default.
- W1973308546 cites W4253724654 @default.
- W1973308546 doi "https://doi.org/10.1086/318996" @default.
- W1973308546 hasPublicationYear "2001" @default.
- W1973308546 type Work @default.
- W1973308546 sameAs 1973308546 @default.
- W1973308546 citedByCount "122" @default.
- W1973308546 countsByYear W19733085462012 @default.
- W1973308546 countsByYear W19733085462013 @default.
- W1973308546 countsByYear W19733085462014 @default.
- W1973308546 countsByYear W19733085462015 @default.
- W1973308546 countsByYear W19733085462016 @default.
- W1973308546 countsByYear W19733085462017 @default.
- W1973308546 countsByYear W19733085462018 @default.
- W1973308546 countsByYear W19733085462019 @default.
- W1973308546 countsByYear W19733085462020 @default.
- W1973308546 countsByYear W19733085462021 @default.
- W1973308546 countsByYear W19733085462022 @default.
- W1973308546 countsByYear W19733085462023 @default.
- W1973308546 crossrefType "journal-article" @default.
- W1973308546 hasAuthorship W1973308546A5019263107 @default.
- W1973308546 hasAuthorship W1973308546A5025741144 @default.
- W1973308546 hasAuthorship W1973308546A5032520367 @default.
- W1973308546 hasAuthorship W1973308546A5033525147 @default.
- W1973308546 hasAuthorship W1973308546A5037072934 @default.
- W1973308546 hasAuthorship W1973308546A5058168207 @default.
- W1973308546 hasAuthorship W1973308546A5072834800 @default.
- W1973308546 hasAuthorship W1973308546A5088467669 @default.
- W1973308546 hasBestOaLocation W19733085461 @default.
- W1973308546 hasConcept C119824511 @default.
- W1973308546 hasConcept C120665830 @default.
- W1973308546 hasConcept C121332964 @default.
- W1973308546 hasConcept C125287762 @default.
- W1973308546 hasConcept C125485243 @default.
- W1973308546 hasConcept C1276947 @default.
- W1973308546 hasConcept C135041427 @default.
- W1973308546 hasConcept C144024400 @default.
- W1973308546 hasConcept C145148216 @default.
- W1973308546 hasConcept C147120987 @default.
- W1973308546 hasConcept C149923435 @default.
- W1973308546 hasConcept C153294291 @default.
- W1973308546 hasConcept C181500209 @default.
- W1973308546 hasConcept C184779094 @default.
- W1973308546 hasConcept C198291218 @default.
- W1973308546 hasConcept C198352243 @default.
- W1973308546 hasConcept C2524010 @default.
- W1973308546 hasConcept C2780928442 @default.
- W1973308546 hasConcept C2908647359 @default.
- W1973308546 hasConcept C33923547 @default.
- W1973308546 hasConcept C44870925 @default.
- W1973308546 hasConcept C4839761 @default.
- W1973308546 hasConcept C62520636 @default.
- W1973308546 hasConcept C6260449 @default.
- W1973308546 hasConcept C86132830 @default.
- W1973308546 hasConcept C96141758 @default.
- W1973308546 hasConcept C98444146 @default.
- W1973308546 hasConceptScore W1973308546C119824511 @default.
- W1973308546 hasConceptScore W1973308546C120665830 @default.
- W1973308546 hasConceptScore W1973308546C121332964 @default.
- W1973308546 hasConceptScore W1973308546C125287762 @default.
- W1973308546 hasConceptScore W1973308546C125485243 @default.
- W1973308546 hasConceptScore W1973308546C1276947 @default.