FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079320824> ?p ?o ?g. }

• W2079320824 endingPage "479" @default.
• W2079320824 startingPage "461" @default.
• W2079320824 abstract "We present a new study of the effects of quasar obscuration on the statistics of Damped Ly α (DLA) systems. We show that the extinction of any Galactic or extragalactic region, , increases linearly with the column density of zinc, with a turning point , above which background sources are suddenly obscured. We derive a relation between the extinction of a DLA system and its column density, , metallicity, Z, fraction of iron in dust, , and redshift, z. From this relation we estimate the fraction of DLA systems missed as a consequence of their own extinction in magnitude-limited surveys. We derive a method for recovering the true frequency distributions of and Z in DLAs, and fZ, using the biased distributions measured in the redshift range where the observations have sufficient statistics (). By applying our method we find that the well-known empirical thresholds of DLA column densities, atoms cm-2 and atoms cm-2, can be successfully explained in terms of the obscuration effect without tuning of the local dust parameters. The obscuration has a modest effect on the distribution of quasar apparent magnitudes, but plays an important role in shaping the statistical distributions of DLAs. The exact estimate of the bias is still limited by the paucity of the data (40 zinc measurements at ). We find that the fraction of DLAs missed as a consequence of obscuration is ~30% to 50%, consistent with the results of surveys of radio-selected quasars. By modelling the metallicity distribution with a Schechter function we find that the mean metallicity can be ∼5 to 6 times higher than the value commonly reported for DLAs at ." @default.
• W2079320824 created "2016-06-24" @default.
• W2079320824 creator A5044746772 @default.
• W2079320824 creator A5073472347 @default.
• W2079320824 date "2005-11-25" @default.
• W2079320824 modified "2023-10-17" @default.
• W2079320824 title "The dust obscuration bias in damped Lyman <i>α</i>systems" @default.
• W2079320824 cites W1503682193 @default.
• W2079320824 cites W1509471226 @default.
• W2079320824 cites W1573037074 @default.
• W2079320824 cites W1731370316 @default.
• W2079320824 cites W1749304276 @default.
• W2079320824 cites W1979742375 @default.
• W2079320824 cites W1987276069 @default.
• W2079320824 cites W1994693533 @default.
• W2079320824 cites W1995333740 @default.
• W2079320824 cites W2001490443 @default.
• W2079320824 cites W2005051185 @default.
• W2079320824 cites W2006268777 @default.
• W2079320824 cites W2008991502 @default.
• W2079320824 cites W2019579421 @default.
• W2079320824 cites W2020195744 @default.
• W2079320824 cites W2022920666 @default.
• W2079320824 cites W2024297548 @default.
• W2079320824 cites W2026203884 @default.
• W2079320824 cites W2026875168 @default.
• W2079320824 cites W2028335785 @default.
• W2079320824 cites W2040813576 @default.
• W2079320824 cites W2041425657 @default.
• W2079320824 cites W2041604411 @default.
• W2079320824 cites W2048116537 @default.
• W2079320824 cites W2050254402 @default.
• W2079320824 cites W2052926897 @default.
• W2079320824 cites W2054460193 @default.
• W2079320824 cites W2062443619 @default.
• W2079320824 cites W2063081715 @default.
• W2079320824 cites W2068380037 @default.
• W2079320824 cites W2072649347 @default.
• W2079320824 cites W2082929737 @default.
• W2079320824 cites W2086751220 @default.
• W2079320824 cites W2089728050 @default.
• W2079320824 cites W2093609163 @default.
• W2079320824 cites W2098245809 @default.
• W2079320824 cites W2105899817 @default.
• W2079320824 cites W2118311540 @default.
• W2079320824 cites W2121083155 @default.
• W2079320824 cites W2126056204 @default.
• W2079320824 cites W2134857842 @default.
• W2079320824 cites W2144174928 @default.
• W2079320824 cites W2145444425 @default.
• W2079320824 cites W2151302933 @default.
• W2079320824 cites W2158536470 @default.
• W2079320824 cites W2159264410 @default.
• W2079320824 cites W2603230884 @default.
• W2079320824 cites W2762618025 @default.
• W2079320824 cites W2997828399 @default.
• W2079320824 cites W3098402430 @default.
• W2079320824 cites W3099670531 @default.
• W2079320824 cites W3100294349 @default.
• W2079320824 cites W3100785990 @default.
• W2079320824 cites W3102189571 @default.
• W2079320824 cites W3102828688 @default.
• W2079320824 cites W3103406256 @default.
• W2079320824 cites W3106253105 @default.
• W2079320824 cites W3110709559 @default.
• W2079320824 cites W3122107026 @default.
• W2079320824 cites W3139327098 @default.
• W2079320824 cites W4300194404 @default.
• W2079320824 cites W67770540 @default.
• W2079320824 cites W2068504443 @default.
• W2079320824 doi "https://doi.org/10.1051/0004-6361:20041570" @default.
• W2079320824 hasPublicationYear "2005" @default.
• W2079320824 type Work @default.
• W2079320824 sameAs 2079320824 @default.
• W2079320824 citedByCount "75" @default.
• W2079320824 countsByYear W20793208242012 @default.
• W2079320824 countsByYear W20793208242014 @default.
• W2079320824 countsByYear W20793208242015 @default.
• W2079320824 countsByYear W20793208242016 @default.
• W2079320824 countsByYear W20793208242017 @default.
• W2079320824 countsByYear W20793208242018 @default.
• W2079320824 countsByYear W20793208242019 @default.
• W2079320824 countsByYear W20793208242020 @default.
• W2079320824 crossrefType "journal-article" @default.
• W2079320824 hasAuthorship W2079320824A5044746772 @default.
• W2079320824 hasAuthorship W2079320824A5073472347 @default.
• W2079320824 hasBestOaLocation W20793208241 @default.
• W2079320824 hasConcept C101991246 @default.
• W2079320824 hasConcept C120665830 @default.
• W2079320824 hasConcept C121332964 @default.
• W2079320824 hasConcept C126691448 @default.
• W2079320824 hasConcept C135041427 @default.
• W2079320824 hasConcept C33024259 @default.
• W2079320824 hasConcept C44870925 @default.
• W2079320824 hasConcept C98444146 @default.
• W2079320824 hasConcept C99465377 @default.
• W2079320824 hasConceptScore W2079320824C101991246 @default.
• W2079320824 hasConceptScore W2079320824C120665830 @default.

• next