FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1994036780> ?p ?o ?g. }

• W1994036780 endingPage "73" @default.
• W1994036780 startingPage "73" @default.
• W1994036780 abstract "view Abstract Citations (38) References (40) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Two-Point Velocity and Spatial Correlation Functions of the C IV Absorption Systems toward the Tololo Quasar Group: Evidence for Superclustering at Z ≃21 Dinshaw, Nadine ; Impey, Chris D. Abstract The large number of apparently correlated C IV absorption systems observed in the lines of sight to the wide QSO pair Tol 1037-2704 (zem = 2.193) and Tol 1038-2712 (zem = 2.331) between the redshifts 1.88 ≤ z ≤ 2.15 is thought to be produced by an intervening supercluster. We present high-resolution echelle spectra of Tol 1037-2704 and Tol 1038-2712, as well as two neighboring QSOs with the aim of searching for absorption associated with the putative supercluster. The lines of sight toward the original pair are separated by 17'.9 corresponding to a proper separation of D⊥ ≃ 4.4 h-1 Mpc (h = H0/100 km s-1 Mpc-1; q0 = 0.5) at z = 2. We confirm the existence of the C IV absorption complexes already reported, and find additional complexes. At a resolution of ∼30 km s-1 FWHM, many of the C IV complexes break up into multiple discrete components with a velocity spread of Δυ ≃ 50-1000 km s-1. This brings the total number of C IV absorption systems with secure identifications to 22 in Tol 1037-2704 and 11 in Tol 1038-2712 in the redshift range 1.48 ≤ z ≤ 2 15 well above the expectation from Poisson statistics. The two neighboring QSOs, Tol 1035-2737 (zem = 2.159) and Tol 1029-2654 (zem = 2.586), are located roughly 40' (D⊥ ≃ 10 h-1 Mpc) southwest and 115'(D⊥ ≃30 h-1 Mpc) northwest of the Tololo pair, respectively. We found five C IV systems in the line of sight to Tol 1035-2737, and six toward Tol 1029-2654. Most of these systems appear to match systems in the original QSO pair within a velocity separation of less than 5000 km s-1, though the significance of the matches is not strong. We find a marginal excess of C IV absorption systems in the line of sight to Tol 1029-2654, whereas the number of systems in the line of sight to Tol 1035-2737 agrees with expectation. The inferred proper dimensions of the proposed supercluster are at least 30 h-1 Mpc on the plane of the sky and approximately 80 h-1 Mpc along the line of sight. We examined the clustering properties of the absorbers toward the Tololo QSOs using the two-point velocity and spatial correlation functions. The velocity correlation function of the complete sample of 44 C IV systems shows strong clustering for velocity separations less than 1000 km s-1, which probe clouds in galactic halos as well as individual galaxies in clusters, and significant clustering signal out to scales of 7000 km s-1. In a subsample of 16 systems (W0 > 0.15 Å), where the power associated with virialized clusters on scales less than 1000 km s-1 has been removed, significant correlation signal persists for velocity separations of 4000- 7000 km s-1, which correspond to comoving spatial scales of ∼30-40 h-1 Mpc. The spatial correlation function of the same subsample, derived by pairing absorbers between different lines of sight, shows a marginally significant peak on comoving scales of less than 18 Mpc. The clustering amplitude on these scales is larger than predicted by current theories of the formation of large-scale structure. Publication: The Astrophysical Journal Pub Date: February 1996 DOI: 10.1086/176794 Bibcode: 1996ApJ...458...73D Keywords: GALAXIES: CLUSTERS: GENERAL; GALAXIES: QUASARS: ABSORPTION LINES; GALAXIES: QUASARS: GENERAL full text sources ADS | data products NED (56) SIMBAD (6)" @default.
• W1994036780 created "2016-06-24" @default.
• W1994036780 creator A5002882354 @default.
• W1994036780 creator A5078952455 @default.
• W1994036780 date "1996-02-01" @default.
• W1994036780 modified "2023-09-26" @default.
• W1994036780 title "Two-Point Velocity and Spatial Correlation Functions of the C IV Absorption Systems toward the Tololo Quasar Group: Evidence for Superclustering at Z 2" @default.
• W1994036780 doi "https://doi.org/10.1086/176794" @default.
• W1994036780 hasPublicationYear "1996" @default.
• W1994036780 type Work @default.
• W1994036780 sameAs 1994036780 @default.
• W1994036780 citedByCount "32" @default.
• W1994036780 countsByYear W19940367802012 @default.
• W1994036780 countsByYear W19940367802013 @default.
• W1994036780 countsByYear W19940367802015 @default.
• W1994036780 crossrefType "journal-article" @default.
• W1994036780 hasAuthorship W1994036780A5002882354 @default.
• W1994036780 hasAuthorship W1994036780A5078952455 @default.
• W1994036780 hasBestOaLocation W19940367801 @default.
• W1994036780 hasConcept C104317684 @default.
• W1994036780 hasConcept C119824511 @default.
• W1994036780 hasConcept C120665830 @default.
• W1994036780 hasConcept C121332964 @default.
• W1994036780 hasConcept C125287762 @default.
• W1994036780 hasConcept C1276947 @default.
• W1994036780 hasConcept C135041427 @default.
• W1994036780 hasConcept C185592680 @default.
• W1994036780 hasConcept C2776968204 @default.
• W1994036780 hasConcept C2780310353 @default.
• W1994036780 hasConcept C33024259 @default.
• W1994036780 hasConcept C44870925 @default.
• W1994036780 hasConcept C4839761 @default.
• W1994036780 hasConcept C55493867 @default.
• W1994036780 hasConcept C90132467 @default.
• W1994036780 hasConcept C98444146 @default.
• W1994036780 hasConceptScore W1994036780C104317684 @default.
• W1994036780 hasConceptScore W1994036780C119824511 @default.
• W1994036780 hasConceptScore W1994036780C120665830 @default.
• W1994036780 hasConceptScore W1994036780C121332964 @default.
• W1994036780 hasConceptScore W1994036780C125287762 @default.
• W1994036780 hasConceptScore W1994036780C1276947 @default.
• W1994036780 hasConceptScore W1994036780C135041427 @default.
• W1994036780 hasConceptScore W1994036780C185592680 @default.
• W1994036780 hasConceptScore W1994036780C2776968204 @default.
• W1994036780 hasConceptScore W1994036780C2780310353 @default.
• W1994036780 hasConceptScore W1994036780C33024259 @default.
• W1994036780 hasConceptScore W1994036780C44870925 @default.
• W1994036780 hasConceptScore W1994036780C4839761 @default.
• W1994036780 hasConceptScore W1994036780C55493867 @default.
• W1994036780 hasConceptScore W1994036780C90132467 @default.
• W1994036780 hasConceptScore W1994036780C98444146 @default.
• W1994036780 hasLocation W19940367801 @default.
• W1994036780 hasOpenAccess W1994036780 @default.
• W1994036780 hasPrimaryLocation W19940367801 @default.
• W1994036780 hasRelatedWork W2003282339 @default.
• W1994036780 hasRelatedWork W2007828443 @default.
• W1994036780 hasRelatedWork W2054962737 @default.
• W1994036780 hasRelatedWork W2063294917 @default.
• W1994036780 hasRelatedWork W2066366133 @default.
• W1994036780 hasRelatedWork W2099551201 @default.
• W1994036780 hasRelatedWork W3023361108 @default.
• W1994036780 hasRelatedWork W3100451100 @default.
• W1994036780 hasRelatedWork W4206820831 @default.
• W1994036780 hasRelatedWork W4327814103 @default.
• W1994036780 hasVolume "458" @default.
• W1994036780 isParatext "false" @default.
• W1994036780 isRetracted "false" @default.
• W1994036780 magId "1994036780" @default.
• W1994036780 workType "article" @default.