ALMA Resolves the Stellar Birth Explosions in Distant Radio-Loud Quasars

Barthel, P. D.; Versteeg, M. J. F.

doi:10.18727/0722-6691/5140

Cited by 3 publications

(5 citation statements)

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“…The emission from the radio structure is best described with a double power law with a cutoff at 200 GHz. In addition to the 1.2 mm MAMBO data, we used recent ALMA observations (see Table 2 and Barthel & Versteeg 2019) to constrain the radio model. Barthel & Versteeg (2019) used the 2 cm VLA image to subtract the nonthermal emission from the ALMA image at 1 mm and estimated that ∼11% of the total flux at 1 mm has a nonthermal origin.…”

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

“…In addition to the 1.2 mm MAMBO data, we used recent ALMA observations (see Table 2 and Barthel & Versteeg 2019) to constrain the radio model. Barthel & Versteeg (2019) used the 2 cm VLA image to subtract the nonthermal emission from the ALMA image at 1 mm and estimated that ∼11% of the total flux at 1 mm has a nonthermal origin. We use this estimate to constrain the radio model in our fitting procedure.…”

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

“…The radio emission is best described with a parabola having a cutoff at FIR wavelengths. To constrain the radio model, we added recent ALMA data to our analysis (see Table 2 and Barthel & Versteeg 2019). We used the nonthermal emission estimated in Barthel & Versteeg (2019) as prior information to constrain the radio model in our fitting procedure.…”

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

“…To constrain the radio model, we added recent ALMA data to our analysis (see Table 2 and Barthel & Versteeg 2019). We used the nonthermal emission estimated in Barthel & Versteeg (2019) as prior information to constrain the radio model in our fitting procedure. Similar to Barthel & Versteeg (2019), we estimate ∼82% nonthermal emission at 1 mm.…”

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

“…We used the nonthermal emission estimated in Barthel & Versteeg (2019) as prior information to constrain the radio model in our fitting procedure. Similar to Barthel & Versteeg (2019), we estimate ∼82% nonthermal emission at 1 mm.…”

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

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Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2

Azadi

Wilkes

Kuraszkiewicz

et al. 2023

ApJ

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We constrain the emission mechanisms responsible for the prodigious electromagnetic output generated by active galactic nuclei (AGNs) and their host galaxies with a novel state-of-the-art AGN radio-to-X-ray spectral energy distribution model fitting code (ARXSED). ARXSED combines multiple components to fit the spectral energy distributions (SEDs) of AGNs and their host galaxies. Emission components include radio structures such as lobes and jets, infrared emission from the AGN torus, visible-to-X-ray emission from the accretion disk, and radio-to-ultraviolet emission from the host galaxy. Applying ARXSED to the radio SEDs of 20 3CRR quasars at 1 < z < 2 verifies the need for more than a simple power law when compact radio structures are present. The nonthermal emission contributes 91%–57% of the observed-frame 1.25 mm to 850 μm flux, and this component must be accounted for when using these wavelengths to estimate star formation properties. We predict the presence of strong radio-linked X-ray emission in more than half the sample sources. ARXSED estimates median (and the associated first and third quartile ranges) BH mass of 2.9 1.7 6.0 × 10 9 M ☉ , logarithm of Eddington ratio of − 1.0 − 1.2 − 0.6 , and spin of 0.98 0.94 0.99 for our sample. The inferred AGN torus and accretion disk parameters agree with those estimated from spectroscopic analyses of similar samples in the literature. We present the median intrinsic SED of the luminous radio-loud quasars at 1 < z ≲ 2; this SED represents a significant improvement in the way each component is modeled.

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Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

Section: Fitting Results For Individual Sourcesmentioning

confidence: 99%

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Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2

Azadi

Wilkes

Kuraszkiewicz

et al. 2023

ApJ

Self Cite

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A Spatially Resolved Survey of Distant Quasar Host Galaxies. II. Photoionization and Kinematics of the ISM

Vayner

Wright

Murray

et al. 2021

ApJ

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We present detailed observations of photoionization conditions and galaxy kinematics in 11 z = 1.39-2.59 radioloud quasar host galaxies. Data were taken with the OSIRIS integral field spectrograph and the adaptive optics system at the W. M. Keck Observatory that targeted nebular emission lines (Hβ, [O III], Hα, [N II]) redshifted into the near-infrared (1-2.4 μm). We detect extended ionized emission on scales ranging from 1 to 30 kpc photoionized by stars, shocks, and active galactic nuclei (AGN). Spatially resolved emission-line ratios indicate that our systems reside off the star formation and AGN-mixing sequence on the Baldwin, Phillips, & Terlevich diagram at low redshift. The dominant cause of the difference between line ratios of low-redshift galaxies and our sample is due to lower gas-phase metallicities, which are 2-5× less compared to galaxies with AGN in the nearby universe. Using gas velocity dispersion as a proxy to stellar velocity dispersion and dynamical mass measurement through inclined disk modeling, we find that the quasar host galaxies are undermassive relative to their central supermassive black hole mass, with all systems residing off the local scaling (M • -σ, M • -M * ) relationship. These quasar host galaxies require substantial growth, up to an order of magnitude in stellar mass, to grow into presentday massive elliptical galaxies. Combining these results with part I of our sample paper, we find evidence for winds capable of causing feedback before the AGN host galaxies land on the local scaling relation between black hole and galaxy stellar mass, and before the enrichment of the interstellar medium to a level observed in local galaxies with AGN. Unified Astronomy Thesaurus concepts: Radio loud quasars (1349); Galaxy winds (626); Emission line galaxies (459); M-sigma relation (2026); Supermassive black holes (1663); Observational astronomy (1145); Astronomical techniques (1684); Near infrared astronomy (1093)

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

Vayner

Wright

Murray

et al. 2021

ApJ

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We present observations of ionized gas outflows in 11 z = 1.39-2.59 radio-loud quasar host galaxies. Data were taken with the integral field spectrograph OSIRIS and the adaptive optics system at the W.M. Keck Observatory targeting nebular emission lines (Hβ, [O III], Hα, [N II], and [S II]) redshifted into the near-infrared (1-2.4 μm).Outflows with velocities of 500-1700 km s −1 are detected in 10 systems on scales ranging from <1 kpc to 10 kpc with outflow rates from 8-2400 M e yr −1 . For five sources, the outflow momentum rates are 4-80 times L AGN /c, consistent with outflows being driven by an energy-conserving shock. The five other outflows are either driven by radiation pressure or an isothermal shock. The outflows are the dominant source of gas depletion, and we find no evidence for star formation along the outflow paths. For eight objects, the outflow paths are consistent with the orientation of the jets. Yet, given the calculated pressures, we find no evidence of the jets currently doing work on these galactic-scale ionized outflows. We find that galactic-scale feedback occurs well before galaxies establish a substantial fraction of their stellar mass, as expected from local scaling relationships.Unified Astronomy Thesaurus concepts: AGN host galaxies (2017); Galaxy evolution (594); Quasars (1319); Radio loud quasars (1349); Supermassive black holes (1663); Emission line galaxies (459)

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ALMA Resolves the Stellar Birth Explosions in Distant Radio-Loud Quasars

Cited by 3 publications

References 0 publications

Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2

Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2

A Spatially Resolved Survey of Distant Quasar Host Galaxies. II. Photoionization and Kinematics of the ISM

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

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