Matches in SemOpenAlex for { <https://semopenalex.org/work/W40607731> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W40607731 startingPage "1117" @default.
- W40607731 abstract "The SDSS contains the largest set of spectroscopically confirmed broad line quasars ever compiled. Upon its completion, the UKIDSS LAS will provide a near-infrared counterpart to the SDSS, reaching 3 magnitudes deeper than 2MASS over a 4000 square degree area within the SDSS footprint. Combining the SDSS optical and UKIDSS near-infrared data, allows a new insight into the photometric and spectroscopic properties of broad absorption line quasars (BALQSOs) relative to the quasar population as a whole. An accurate estimate of the intrinsic BALQSO fraction is essential for determining the BAL cloud covering fraction and the implications for the co-evolution of accreting supermassive black holes and their host galaxies. Defining a K-band limited sample of quasars makes clear the significantly redder distribution of i − K colours of the BALQSOs. The BALQSO i − K colour distribution enables us to estimate a lower limit to the intrinsic BALQSO fraction, computed to be ∼ 30 percent, significantly larger than the optical fraction of 15–20 percent found by several authors. We combined the high-quality SDSS spectra of the quasar sample to make several composite spectra based on i−K colour, and the properties of these composites are compared to a composite spectrum of unreddened quasars. If the origin of the wavelength dependent differences between the red and unreddened objects is ascribed to attenuation by dust, we find that the extinction curve of the material is intermediate in form between the steep SMC-like extinction curve and the recent, empirically determined, extinction curve presented by Gaskell & Benker (2007)." @default.
- W40607731 created "2016-06-24" @default.
- W40607731 creator A5079965553 @default.
- W40607731 creator A5084207540 @default.
- W40607731 date "2008-01-01" @default.
- W40607731 modified "2023-09-23" @default.
- W40607731 title "Investigating broad absorption line quasars with SDSS and UKIDSS ." @default.
- W40607731 hasPublicationYear "2008" @default.
- W40607731 type Work @default.
- W40607731 sameAs 40607731 @default.
- W40607731 citedByCount "0" @default.
- W40607731 crossrefType "journal-article" @default.
- W40607731 hasAuthorship W40607731A5079965553 @default.
- W40607731 hasAuthorship W40607731A5084207540 @default.
- W40607731 hasConcept C101991246 @default.
- W40607731 hasConcept C120665830 @default.
- W40607731 hasConcept C121332964 @default.
- W40607731 hasConcept C1276947 @default.
- W40607731 hasConcept C135041427 @default.
- W40607731 hasConcept C144024400 @default.
- W40607731 hasConcept C149923435 @default.
- W40607731 hasConcept C2908647359 @default.
- W40607731 hasConcept C44870925 @default.
- W40607731 hasConcept C4839761 @default.
- W40607731 hasConcept C98444146 @default.
- W40607731 hasConceptScore W40607731C101991246 @default.
- W40607731 hasConceptScore W40607731C120665830 @default.
- W40607731 hasConceptScore W40607731C121332964 @default.
- W40607731 hasConceptScore W40607731C1276947 @default.
- W40607731 hasConceptScore W40607731C135041427 @default.
- W40607731 hasConceptScore W40607731C144024400 @default.
- W40607731 hasConceptScore W40607731C149923435 @default.
- W40607731 hasConceptScore W40607731C2908647359 @default.
- W40607731 hasConceptScore W40607731C44870925 @default.
- W40607731 hasConceptScore W40607731C4839761 @default.
- W40607731 hasConceptScore W40607731C98444146 @default.
- W40607731 hasLocation W406077311 @default.
- W40607731 hasOpenAccess W40607731 @default.
- W40607731 hasPrimaryLocation W406077311 @default.
- W40607731 hasRelatedWork W1525297841 @default.
- W40607731 hasRelatedWork W1536322090 @default.
- W40607731 hasRelatedWork W1570769630 @default.
- W40607731 hasRelatedWork W1970817092 @default.
- W40607731 hasRelatedWork W1989822485 @default.
- W40607731 hasRelatedWork W2003257878 @default.
- W40607731 hasRelatedWork W2008712774 @default.
- W40607731 hasRelatedWork W2015981094 @default.
- W40607731 hasRelatedWork W2289092869 @default.
- W40607731 hasRelatedWork W2569002896 @default.
- W40607731 hasRelatedWork W2953418954 @default.
- W40607731 hasRelatedWork W2991463500 @default.
- W40607731 hasRelatedWork W2999424807 @default.
- W40607731 hasRelatedWork W3044722085 @default.
- W40607731 hasRelatedWork W3083537370 @default.
- W40607731 hasRelatedWork W3100556126 @default.
- W40607731 hasRelatedWork W3101746479 @default.
- W40607731 hasRelatedWork W3101896816 @default.
- W40607731 hasRelatedWork W3104855129 @default.
- W40607731 hasRelatedWork W3105111674 @default.
- W40607731 hasVolume "79" @default.
- W40607731 isParatext "false" @default.
- W40607731 isRetracted "false" @default.
- W40607731 magId "40607731" @default.
- W40607731 workType "article" @default.