Journal article
[O III] emission in z ≈ 2 quasars with and without broad absorption lines
Monthly notices of the Royal Astronomical Society, v 532(1), pp 424-437
01 Jul 2024
Abstract
Understanding the links between different phases of outflows from active galactic nuclei is a key goal in extragalactic astrophysics. Here, we compare [O III] lambda lambda 4960, 5008 outflow signatures in quasars with and without broad absorption lines (BALs), aiming to test how the broad absorption troughs seen in the rest-frame ultraviolet are linked to the narrow line region outflows seen in the rest-frame optical. We present new near-infrared spectra from Magellan/FIRE that cover [O III] in 12 quasars with 2.1 < z < 2.3, selected to have strong outflow signatures in CIV lambda 1550. Combining with data from the literature, we build a sample of 73 BAL, 115 miniBAL, and 125 non-BAL quasars with 1.5 < z < 2.6. The strength and velocity width of [O iii] correlate strongly with the C iv emission properties, but no significant difference is seen in the [O III] emission-line properties between the BALs, non-BALs, and miniBALs once the dependence on CIV emission is taken into account. A weak correlation is observed between the velocities of C iv BALs and [O III] emission, which is accounted for by the fact that both outflow signatures correlate with the underlying CIV emission properties. Our results add to the growing evidence that BALs and non-BALs are drawn from the same parent population and are consistent with a scenario wherein BAL troughs are intermittent tracers of persistent quasar outflows, with a part of such outflow becoming optically thick along our line of sight for sporadic periods of time within which BALs are observed.
Metrics
Details
- Title
- [O III] emission in z ≈ 2 quasars with and without broad absorption lines
- Creators
- Matthew J. Temple (Corresponding Author) - Universidad Diego PortalesAmy L. Rankine - Royal ObservatoryManda Banerji - University of SouthamptonJoseph F. Hennawi - Leiden UniversityPaul C. Hewett - University of CambridgeJames H. Matthews - University of OxfordRiccardo Nanni - Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, NetherlandsClaudio Ricci - Univ Diego Portales, Inst Estudios Astrofis, Av Ejercito Libertador 441, Santiago 8370191, ChileGordon T. Richards - Drexel University, Physics
- Publication Details
- Monthly notices of the Royal Astronomical Society, v 532(1), pp 424-437
- Publisher
- Oxford University Press
- Number of pages
- 14
- Grant note
- MR/T020989/1 / UKRI; UK Research & Innovation (UKRI) 1230345 / Fondecyt Regular grant; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); CONICYT FONDECYT ST/X001075/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 3220516 / FONDECYT postdoctoral fellowship; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); CONICYT FONDECYT FB210003 / ANID BASAL URF/R/221003; URF/R1/221062 / Royal Society via University Research Fellowships
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:001262529900007
- Scopus ID
- 2-s2.0-85197360269
- Other Identifier
- 991021888815604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics