Matches in SemOpenAlex for { <https://semopenalex.org/work/W2011771395> ?p ?o ?g. }
- W2011771395 abstract "The Infrared Spectrograph (IRS) on board the Spitzer Space Telescope has been used to obtain low- and moderate-resolution spectra of the dust- and gas-rich quasar APM 08279+5255 (z = 3.91). Broad Paα and Paβ recombination lines of hydrogen were detected at wavelengths of 9.235 and 6.315 μm, respectively, as well as a strong, red continuum that is a smooth power law over the observed (rest-frame) wavelength range 5.3-35 μm (1.08-7.1 μm). The observed Paα/Paβ line flux ratio of 1.05 ± 0.2 is far from the case B value of ~2 and simple models of high-density, high optical depth ionized-gas regions (~1.8). This deviation is opposite in sense to the expected effect of reddening. No evidence is found in the spectrum for either the 3.3 or the 6.2 μm emission features usually attributed to aromatic hydrocarbons in gas-rich galaxies in the local universe. This is consistent with the high-luminosity active galactic nucleus (AGN) nature of APM 08279+5255." @default.
- W2011771395 created "2016-06-24" @default.
- W2011771395 creator A5000936421 @default.
- W2011771395 creator A5007710323 @default.
- W2011771395 creator A5009038521 @default.
- W2011771395 creator A5015917702 @default.
- W2011771395 creator A5019099070 @default.
- W2011771395 creator A5023602707 @default.
- W2011771395 creator A5036606153 @default.
- W2011771395 creator A5036619856 @default.
- W2011771395 creator A5039639354 @default.
- W2011771395 creator A5064539892 @default.
- W2011771395 creator A5070941814 @default.
- W2011771395 creator A5072331590 @default.
- W2011771395 creator A5075649424 @default.
- W2011771395 creator A5077334477 @default.
- W2011771395 creator A5079584598 @default.
- W2011771395 creator A5085629207 @default.
- W2011771395 creator A5091806349 @default.
- W2011771395 date "2004-09-01" @default.
- W2011771395 modified "2023-10-01" @default.
- W2011771395 title "Spitzer Infrared Spectrograph (IRS) Observations of the Redshift 3.91 Quasar APM 08279+5255" @default.
- W2011771395 cites W1545676728 @default.
- W2011771395 cites W1580151019 @default.
- W2011771395 cites W1583795182 @default.
- W2011771395 cites W1969002491 @default.
- W2011771395 cites W2001985633 @default.
- W2011771395 cites W2013208382 @default.
- W2011771395 cites W2018858432 @default.
- W2011771395 cites W2027950939 @default.
- W2011771395 cites W2029049330 @default.
- W2011771395 cites W2037125500 @default.
- W2011771395 cites W2045848632 @default.
- W2011771395 cites W2049506246 @default.
- W2011771395 cites W2064167262 @default.
- W2011771395 cites W2064174537 @default.
- W2011771395 cites W2081087406 @default.
- W2011771395 cites W2091643460 @default.
- W2011771395 cites W2093961752 @default.
- W2011771395 cites W2100739331 @default.
- W2011771395 cites W3103117624 @default.
- W2011771395 cites W4247002029 @default.
- W2011771395 doi "https://doi.org/10.1086/421977" @default.
- W2011771395 hasPublicationYear "2004" @default.
- W2011771395 type Work @default.
- W2011771395 sameAs 2011771395 @default.
- W2011771395 citedByCount "22" @default.
- W2011771395 countsByYear W20117713952012 @default.
- W2011771395 countsByYear W20117713952015 @default.
- W2011771395 countsByYear W20117713952016 @default.
- W2011771395 countsByYear W20117713952017 @default.
- W2011771395 countsByYear W20117713952022 @default.
- W2011771395 crossrefType "journal-article" @default.
- W2011771395 hasAuthorship W2011771395A5000936421 @default.
- W2011771395 hasAuthorship W2011771395A5007710323 @default.
- W2011771395 hasAuthorship W2011771395A5009038521 @default.
- W2011771395 hasAuthorship W2011771395A5015917702 @default.
- W2011771395 hasAuthorship W2011771395A5019099070 @default.
- W2011771395 hasAuthorship W2011771395A5023602707 @default.
- W2011771395 hasAuthorship W2011771395A5036606153 @default.
- W2011771395 hasAuthorship W2011771395A5036619856 @default.
- W2011771395 hasAuthorship W2011771395A5039639354 @default.
- W2011771395 hasAuthorship W2011771395A5064539892 @default.
- W2011771395 hasAuthorship W2011771395A5070941814 @default.
- W2011771395 hasAuthorship W2011771395A5072331590 @default.
- W2011771395 hasAuthorship W2011771395A5075649424 @default.
- W2011771395 hasAuthorship W2011771395A5077334477 @default.
- W2011771395 hasAuthorship W2011771395A5079584598 @default.
- W2011771395 hasAuthorship W2011771395A5085629207 @default.
- W2011771395 hasAuthorship W2011771395A5091806349 @default.
- W2011771395 hasBestOaLocation W20117713951 @default.
- W2011771395 hasConcept C120665830 @default.
- W2011771395 hasConcept C121332964 @default.
- W2011771395 hasConcept C12287442 @default.
- W2011771395 hasConcept C1276947 @default.
- W2011771395 hasConcept C135041427 @default.
- W2011771395 hasConcept C158355884 @default.
- W2011771395 hasConcept C2778861254 @default.
- W2011771395 hasConcept C2780848835 @default.
- W2011771395 hasConcept C33024259 @default.
- W2011771395 hasConcept C43481613 @default.
- W2011771395 hasConcept C44870925 @default.
- W2011771395 hasConcept C4839761 @default.
- W2011771395 hasConcept C522977591 @default.
- W2011771395 hasConcept C6260449 @default.
- W2011771395 hasConcept C98444146 @default.
- W2011771395 hasConceptScore W2011771395C120665830 @default.
- W2011771395 hasConceptScore W2011771395C121332964 @default.
- W2011771395 hasConceptScore W2011771395C12287442 @default.
- W2011771395 hasConceptScore W2011771395C1276947 @default.
- W2011771395 hasConceptScore W2011771395C135041427 @default.
- W2011771395 hasConceptScore W2011771395C158355884 @default.
- W2011771395 hasConceptScore W2011771395C2778861254 @default.
- W2011771395 hasConceptScore W2011771395C2780848835 @default.
- W2011771395 hasConceptScore W2011771395C33024259 @default.
- W2011771395 hasConceptScore W2011771395C43481613 @default.
- W2011771395 hasConceptScore W2011771395C44870925 @default.
- W2011771395 hasConceptScore W2011771395C4839761 @default.
- W2011771395 hasConceptScore W2011771395C522977591 @default.
- W2011771395 hasConceptScore W2011771395C6260449 @default.