A Spatially Resolved Survey of Distant Quasar Host Galaxies. I. Dynamics of Galactic Outflows

Vayner, Andrey; Wright, Shelley A.; Murray, Norman; Armus, L.; Boehle, Anna; Cosens, Maren; Larkin, James E.; Mieda, Etsuko; Walth, Gregory

doi:10.3847/1538-4357/ac0f56

Cited by 23 publications

(18 citation statements)

References 114 publications

(151 reference statements)

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“…A leading goal of the ALMA observational program was to detect molecular gas outflows in quasars with powerful ionized outflows that were previously detected via optical emission line (e.g., [O III], Hα) kinematics using integral field spectroscopy observations with adaptive optics (Vayner et al 2021b(Vayner et al , 2021c. All sources selected within this study display ionized gas outflows on kiloparsec scales, with outflow rates in the range of 50-1000 M e yr −1 , velocities >500 km s −1 with momentum fluxes >10 35 dyne, and coupling efficiencies between the kinetic luminosity of the outflow and the bolometric luminosity of the quasar >0.05%.…”

Section: Observations Data Reduction and Line Fittingmentioning

confidence: 99%

“…With Keck/OSIRIS observations, we detected extended ionized gas on an 8 kpc scale in the [O III], Hα, and [N II] emission lines (Vayner et al 2021c). We detected a biconical ionized outflow extending along the northeast and southwest directions.…”

Section: Individual Objectsmentioning

confidence: 99%

“…To compare the energetics of the winds of our sample with other massive galaxies with AGNs, we collated data on molecular and ionized outflows in galaxies at 1 < z < 3. We recomputed the ionized outflow rates, luminosities, and momentum fluxes using a consistent prescription; details can be found in Vayner et al (2021c). To differentiate AGN outflow mechanisms, we compare the momentum flux of the outflow against the photon momentum flux from the accretion disk, as well as the kinetic luminosity of the outflow against the bolometric luminosity of the quasar (Figure 7).…”

Section: Quasar As Potential Driver Of Galactic Outflowsmentioning

confidence: 99%

“…Blue circles and squares represent molecular outflows detected through CO emission and OH absorption, respectively. Red circles represent ionized outflows at cosmic noon, recomputed in the exact same manner in Vayner et al (2021c). Black stars are the ionized outflows of the parent sample for this study.…”

Section: Quasar As Potential Driver Of Galactic Outflowsmentioning

confidence: 99%

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Multiphase Outflows in High-redshift Quasar Host Galaxies

Vayner

Zakamska

Wright

et al. 2021

ApJ

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We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of six radio-loud quasar host galaxies at z = 1.4–2.3. We combine the kiloparsec-scale resolution ALMA observations with high spatial resolution adaptive optics integral field spectrograph data of the ionized gas. We detect molecular gas emission in five quasar host galaxies and resolve the molecular interstellar medium using the CO (3–2) or CO (4–3) rotational transitions. Clumpy molecular outflows are detected in four quasar host galaxies and a merger system 21 kpc away from one quasar. Between the ionized and cold molecular gas phases, the majority of the outflowing mass is in a molecular phase, while for three out of four detected multiphase gas outflows, the majority of the kinetic luminosity and momentum flux is in the ionized phase. Combining the energetics of the multiphase outflows, we find that their driving mechanism is consistent with energy-conserving shocks produced by the impact of the quasar jets with the gas in the galaxy. By assessing the molecular gas mass to the dynamics of the outflows, we estimate a molecular gas depletion timescale of a few megayears. The gas outflow rates exceed the star formation rates, suggesting that quasar feedback is a major mechanism of gas depletion at the present time. The coupling efficiency between the kinetic luminosity of the outflows and the bolometric luminosity of the quasar of 0.1%–1% is consistent with theoretical predictions. Studying multiphase gas outflows at high redshift is important for quantifying the impact of negative feedback in shaping the evolution of massive galaxies.

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Section: Observations Data Reduction and Line Fittingmentioning

confidence: 99%

Section: Individual Objectsmentioning

confidence: 99%

Section: Quasar As Potential Driver Of Galactic Outflowsmentioning

confidence: 99%

Section: Quasar As Potential Driver Of Galactic Outflowsmentioning

confidence: 99%

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Multiphase Outflows in High-redshift Quasar Host Galaxies

Vayner

Zakamska

Wright

et al. 2021

ApJ

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“…Outflows in quasars are also seen in ionized emission lines. For example, kiloparsec-scale outflows observed in emission lines such as [O III] are known to be common among luminous AGN (e.g., Harrison et al 2014;Bischetti et al 2017;Vayner et al 2021). More compact ionized emission-line outflows have been resolved in nearby objects; for example, ionized gas outflows have been found 0.1-3 kpc from the nucleus (Revalski et al 2021).…”

Section: [O Iii] Emission From the Bal Gasmentioning

confidence: 99%

The Properties of Low-Redshift FeLoBAL Quasars: III. The Location and Geometry of the Outflows

Choi,

Leighly,

Dabbieri

et al. 2022

Preprint

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We present continued analysis of a sample of low-redshift iron low-ionization broad absorption-line quasars (FeLoBALQs). Choi et al. (2022) presented SimBAL spectral analysis of BAL outflows in 50 objects. Leighly et al. (2022) analyzed optical emission lines of 30 of those 50 objects and found that they are characterized by either a high accretion rate (L Bol /L Edd > 0.3) or low accretion rate (0.03 < L Bol /L Edd < 0.3). We report that the outflow velocity is inversely correlated with the BAL location among the high accretion rate objects, with the highest velocities observed in the parsec-scale outflows. In contrast, the low Eddington ratio objects showed the opposite trend. We confirmed the known relationship between outflow velocity and L Bol /L Edd , and found that the scatter plausibly originates in the force multiplier (launch radius) in the low (high) accretion rate objects. A log volume filling factor between −6 and −4 was found in most outflows, but was as high as −1 for low-velocity compact outflows. We investigated the relationship between the observed [O III] emission and that predicted from the BAL gas. We found that these could be reconciled if the emission-line covering fraction depends on Seyfert type and BAL location. The difference between the predicted and observed [O III] luminosity is correlated with the outflow velocity, suggesting that [O III] emission in high Eddington ratio objects may be broad and hidden under Fe II emission. We suggest that the physical differences in the outflow properties as a function of location in the quasar and accretion rate point to different formation, acceleration, and confinement mechanisms for the two FeLoBALQ types.

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Extreme FeLoBAL outflow in the VLT/UVES spectrum of quasar SDSS J1321−0041

Byun,

Arav,

Sharma

et al. 2024

A&A

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Quasar outflows are often analyzed to determine their ability to contribute to active galactic nucleus (AGN) feedback. We identified a broad absorption line (BAL) outflow in the VLT/UVES spectrum of the quasar SDSS J1321-0041. The outflow shows troughs from Fe ii and is thus categorized as an FeLoBAL. This outfow is unusual among the population of FeLoBAL outflows, as it displays C ii and Si ii BALs. Outflow systems require a kinetic luminosity above $ of the quasar's luminosity to contribute to AGN feedback. For this reason, we analyzed the spectrum of J1321-0041 to determine the outflow's kinetic luminosity, as well as the quasar's bolometric luminosity. We measured the ionic column densities from the absorption troughs in the spectrum and determined the Hydrogen column density and ionization parameter using those column densities as our constraints. We also determined the electron number density, $n_e$, based on the ratios between the excited-state and resonance-state column densities of Fe ii and Si ii . This allowed us to find the distance of the outflow from its central source, as well as its kinetic luminosity. We determined the kinetic luminosity of the outflow to be $8.4^ erg s $ and the quasar's bolometric luminosity to be $1.72 erg s $, resulting in a ratio of $ E _k/L_ Bol <!PCT!>$. We conclude that this outflow has a sufficiently high kinetic luminosity to contribute to AGN feedback.

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A Spatially Resolved Survey of Distant Quasar Host Galaxies. I. Dynamics of Galactic Outflows

Cited by 23 publications

References 114 publications

Multiphase Outflows in High-redshift Quasar Host Galaxies

Multiphase Outflows in High-redshift Quasar Host Galaxies

The Properties of Low-Redshift FeLoBAL Quasars: III. The Location and Geometry of the Outflows

Extreme FeLoBAL outflow in the VLT/UVES spectrum of quasar SDSS J1321−0041

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