Jet-Induced Feedback in the [O III] Lines of Early Evolution Stage Active Galactic Nuclei

Berton, M.; Järvelä, E.

doi:10.3390/universe7060188

Cited by 7 publications

(5 citation statements)

References 119 publications

(168 reference statements)

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“…Several studies have found a connection between the level of radio emission in AGN host galaxies and the presence of ionised outflows (Mullaney et al 2013;Zakamska & Greene 2014;Molyneux et al 2019;Jarvis et al 2021). Also, observational evidence has been reported that suggests outflow kinematics and radio jets are related (Smirnova et al 2007;Nesvadba et al 2017;Berton & Järvelä 2021). However, Wang et al (2018) found no connection between the radio properties and the outflow kinematics.…”

Section: Introductionmentioning

confidence: 99%

Tracing the outflow kinematics in Type 2 active galactic nuclei

Kovačević-Dojčinović

Dojčinović

Lakićević

2022

A&A

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We used a sample of 577 spectra of active galactic nuclei Type 1.8-2 (z < 0.25) taken from the Sloan Digital Sky Survey to trace the influence of the outflow kinematics on the profiles of different emission lines (Hβ, [O III], Hα, [N II], [S II]). All considered lines were fitted with two Gaussian components: one that fits the core of the line, and another that fits the wings. We provide a procedure for decomposition of the Hα+[N II] wavelength band for spectra where these lines overlap. The influence of the gravitational and non-gravitational kinematics on the line components is investigated by comparing the dispersions of the line components with stellar velocity dispersion. We find that wing components of all the considered emission lines have pure non-gravitational kinematics. The core components are consistent with gravitational kinematics for the Hα, [N II], and [S II] lines, while in the [O III] there is evidence for contribution from non-gravitational kinematics. We adopted the wing components as a proxy for the outflow contribution and investigated the outflow kinematics by analysing the correlations between the widths and shifts of the wing components of different lines. For this purpose, we used the subsets in which wing components are detected in both compared lines, and can be fitted independently. We find strong correlations between wing component shifts, as well as between wing component widths of all considered lines, with the exception of the Hβ wing component width. These correlations indicate that outflow dynamics systemically affect all emission lines in the spectrum. However, it reflects with a different strength in their profiles, which is observed as different widths of the wing components. This is investigated by comparison of the mean widths of the wing components in subsets where wing components are present in all lines. The strongest outflow signature is observed in the [O III] lines, which have the broadest wing components; weaker outflow signatures are found in Hα and [N II], and the weakest is found for [S II]. These results imply that the considered lines arise in different parts of an outflowing region.

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Section: Introductionmentioning

confidence: 99%

Tracing the outflow kinematics in Type 2 active galactic nuclei

Kovačević-Dojčinović

Dojčinović

Lakićević

2022

A&A

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“…At low-z, only in the case of the 'blue-outliers' the [O iii]λλ4959,5007 profiles appear to be very boxy-shaped and with the FWHM > 1000 km s −1 . Some of these sources are NLSy1s and the [O iii]λλ4959,5007 FWHM is becoming comparable to the one of the broad Hβ profile sources (Zamanov et al 2002;Komossa et al 2008;Cracco et al 2016;Komossa et al 2018;Berton & Järvelä 2021). At high z and high luminosity the [O iii]λλ4959,5007 profiles often appear much broader, as do also the Hβ broad profiles (Carniani et al 2015;Fiore et al 2017;Villar Martín et al 2020).…”

Section: Hβ and [O Iii]λλ49595007mentioning

confidence: 95%

“…High-ionisation lines like [O iii]λλ4959,5007 are seen as one of the main detectors of outflowing gas in radio-quiet sources (Zamanov et al 2002;Komossa et al 2008;Zhang et al 2011;Marziani et al 2016b). In the case of radio-loud sources, narrowline outflowing gas has been associated with jets through the blueshifted line components (Capetti et al 1996;Axon et al 2000;Bicknell 2002;Kauffmann et al 2008;Best & Heckman 2012;Reynaldi & Feinstein 2013;Jarvis et al 2019;Berton & Järvelä 2021). Outflows are also detected in Hβ.…”

Section: [O Iii]λλ4959 5007mentioning

confidence: 99%

High-redshift quasars along the main sequence

Deconto-Machado

Orozco

Marziani

et al. 2023

A&A

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Context. The 4-Dimensional Eigenvector 1 empirical formalism (4DE1) and its Main Sequence (MS) for quasars emerged as a powerful tool to organise the quasar diversity since several key observational measures and physical parameters are systematically changing along it. Aims. The trends of the 4DE1 are very well established to explain all the diversity seen in low-redshift quasar samples. Nevertheless, the situation is by far less clear when dealing with high-luminosity and high-redshift sources. We aim to evaluate the behaviour of our 22 high-redshift (2.2 ≤ z ≤ 3.7) and high-luminosity (47.39 ≤ L bol ≤ 48.36) quasars in the context of the 4DE1. Methods. Our approach involves studying quasar physics through spectroscopic exploration of UV and optical emission line diagnostics. We are using new observations from the ISAAC instrument at ESO-VLT and mainly from the SDSS to cover the optical and the UV rest-frames, respectively. Emission lines are characterised both through a quantitative parametrisation of the line profiles, and by decomposing the emission line profiles using multicomponent fitting routines. Results. We provide spectrophotometric properties and line profile measurements for Hβ+[O iii]λλ4959,5007, as well as for Si ivλ1397+O iv]λ1402, C ivλ1549+He iiλ1640, 1900 Å blend (including Al iiiλ1860, Si iii]λ1892, and C iii]λ1909). Six out of the 22 objects present a significant blueshifted component on the Hβ profile, and in 14/22 cases an Hβ outflowing component associated to [O iii] is detected. The majority of [O iii]λλ4959,5007 emission line profiles show blueshifted velocities larger than 250 km s −1 . We reveal extremely broad [O iii]λλ4959,5007 emission that is comparable to the width of Hβ broad profile in some highly accreting quasars. [O iii]λλ4959,5007 and C ivλ1549 blueshifts show very high amplitudes and a high degree of correlation. Line width and shift are correlated for both [O iii]λλ4959,5007 and C ivλ1549, suggesting that emission from outflowing gas is providing a substantial broadening to both lines. Otherwise, the links between C ivλ1549 centroid velocity at half intensity (c(1/2)), Eddington ratio (L/L Edd ), and bolometric luminosity are found to be in agreement with previous studies of high-luminosity quasars. Conclusions. Our analysis suggests that the behaviour of quasars of very high luminosity all along the main sequence is strongly affected by powerful outflows involving a broad range of spatial scales. The main sequence correlations remain valid at high redshift and high luminosity even if a systematic increase in line width is observed. Scaling laws based on UV Al iiiλ1860 and Hβ emission lines are equally reliable estimators of M BH .

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“…Narrow-line Seyfert 1 galaxies can also have blueshifted line profiles, which is indicative of outflows, though this is mostly in high-ionisation lines (e.g. Zamanov et al 2002;Boroson 2005;Berton & Järvelä 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, a relativistic jet with high inclination with respect to the line of sight can be weak due to the lack of relativistic boosting, leading to a wrong classification. Finally, a population of relativistic radio jets, almost totally absorbed at low radio frequencies and thus deemed radio-silent or -quiet, has recently emerged Berton & Järvelä 2021). These issues with the radio-loudness remain true even at high redshifts (Sbarrato et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Jetted narrow-line Seyfert 1 galaxies breaking the jet paradigm: A comprehensive study of host-galaxy morphologies

Varglund

Järvelä

Lähteenmäki

et al. 2022

A&A

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Narrow-line Seyfert 1 (NLS1) galaxies are unevolved active galactic nuclei (AGNs) that exist predominantly in spiral galaxies. However, mostly due to the small number of sources studied, it has been under debate whether also the hosts of jetted NLS1 galaxies, a particular subclass of these sources hosting a relativistic jet, are disk-like or elliptical, as the hosts of more powerful jetted AGNs. We studied the host morphologies of 14 NLS1 galaxies, 11 of which have been detected at 37 GHz, indicating that these sources harbour relativistic jets. The J-and Ks-band data used in this study were obtained with the Nordic Optical Telescope (NOT). We performed the photometric decomposition of the host galaxy using the band that gave a better fit and additionally created colour maps of all sources that had both a J-and a Ks-band observation. We were able to successfully model 12 sources, nine of which most likely have disk-like morphologies. Of the remaining sources, one source could possibly be hosted either in a disk-like or a dwarf galaxy, and in two cases the results are inconclusive. Only one of our sources shows clear signs of interaction, but the colour maps of most of our sources hint at ample dust in the nuclei, possibly indicating earlier minor mergers, which can go unnoticed due to the limited resolution of these observations. Our results further support disk-like galaxies as the predominant host type of jetted NLS1 galaxies. Most importantly, with the number of modelled hosts of jetted NLS1s now exceeding 50, with only a few elliptical hosts, it seems to be safe to conclude that also disk-like galaxies are able to launch and maintain relativistic jets, and that the traditional jet paradigm stating that only massive elliptical galaxies are capable of hosting relativistic jets is severely outdated.

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Jet-Induced Feedback in the [O III] Lines of Early Evolution Stage Active Galactic Nuclei

Cited by 7 publications

References 119 publications

Tracing the outflow kinematics in Type 2 active galactic nuclei

Tracing the outflow kinematics in Type 2 active galactic nuclei

High-redshift quasars along the main sequence

Jetted narrow-line Seyfert 1 galaxies breaking the jet paradigm: A comprehensive study of host-galaxy morphologies

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