Galaxy-scale ionised winds driven by ultra-fast outflows in two nearby quasars

Marasco, Antonino; Cresci, G.; Nardini, E.; Mannucci, F.; Marconi, A.; Tozzi, P.; Tozzi, G.; Amiri, A.; Venturi, G.; Piconcelli, E.; Lanzuisi, G.; Tombesi, Francesco; Mingozzi, Matilde; Perna, M.; Carniani, Stefano; Brusa, M.; Alighieri, S. di Serego

doi:10.1051/0004-6361/202038889

Cited by 47 publications

(51 citation statements)

References 118 publications

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“…The data analysis was executed using custom Python scripts, following an approach similar to that described in Venturi et al (2018), Mingozzi et al (2019), and Marasco et al (2020). We briefly summarise it in the following.…”

Section: Muse Data Description and Analysismentioning

confidence: 99%

MAGNUM survey: Compact jets causing large turmoil in galaxies

Venturi

Cresci

Marconi

et al. 2021

A&A

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113

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Context. Outflows accelerated by active galactic nuclei (AGN) are commonly observed in the form of coherent, mildly collimated high-velocity gas directed along the AGN ionisation cones and kinetically powerful (≳1044 − 45 erg s−1) jets. Recent works found that outflows can also be accelerated by low-power (≲1044 erg s−1) jets, and the most recent cosmological simulations indicate that these are the dominant source of feedback on sub-kiloparsec scales, but little is known about their effect on the galaxy host. Aims. We study the relation between radio jets and the distribution and kinematics of the ionised gas in IC 5063, NGC 5643, NGC 1068, and NGC 1386 as part of our survey of nearby Seyfert galaxies called Measuring Active Galactic Nuclei Under MUSE Microscope (MAGNUM). All these objects host a small-scale (≲1 kpc) low-power (≲1044 erg s−1) radio jet that has small inclinations (≲45°) with respect to the galaxy disc. Methods. We employed seeing-limited optical integral field spectroscopic observations from the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope to obtain flux, kinematic, and excitation maps of the extended ionised gas. We compared these maps with archival radio images and in one case, with Chandra X-ray observations. Results. We detect a strong (up to ≳800–1000 km s−1) and extended (≳1 kpc) emission-line velocity spread perpendicular to the direction of the AGN ionisation cones and jets in all four targets. The gas excitation in this region of line-width enhancement is entirely compatible with shock ionisation. These broad and symmetric line profiles are not associated with a single coherent velocity of the gas. A ‘classical’ outflow component with net blueshifted and redshifted motions is also present, but is directed along the ionisation cones and jets. Conclusions. We interpret the observed phenomenon as due to the action of the jets perturbing the gas in the galaxy disc. These intense and extended velocity spreads perpendicular to AGN jets and cones are indeed currently only observed in galaxies hosting a low-power jet whose inclination is sufficiently low with respect to the galaxy disc to impact on and strongly affect its material. In line with cosmological simulations, our results demonstrate that low-power jets are indeed capable of affecting the host galaxy.

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Section: Muse Data Description and Analysismentioning

confidence: 99%

MAGNUM survey: Compact jets causing large turmoil in galaxies

Venturi

Cresci

Marconi

et al. 2021

A&A

Self Cite

113

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“…The large field-of-view (FoV) and high sampling (0.2 /spaxel) of the instrument, together with the excellent seeing at Paranal (typically 0.6 -0.8 FWHM) allow us to sample scales of 20-30 pc, below the typical dimensions of average-luminosity H regions (see, e.g, Wisnioski et al 2012 andBeaton et al 2014). Line fluxes were obtained for each spaxel of the datacube by a multi-gaussian fit to each emission line, as described in Marasco et al (2020). We have used these IFU spectra to study the effect of different apertures on the resulting spectra, avoiding any contribution from the DIG.…”

Section: Integrated Dig-free Spectra Of Nearby H Regionsmentioning

confidence: 99%

The diffuse ionized gas (DIG) in star-forming galaxies: the influence of aperture effects on local H ii regions

Mannucci

Belfiore

Curti

et al. 2021

Monthly Notices of the Royal Astronomical Society

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The Diffuse Ionized Gas (DIG) contributes to the nebular emission of galaxies, resulting in emission line flux ratios that can be significantly different from those produced by H ii regions. Comparing the emission of [SII]λ6717,31 between pointed observations of H ii regions in nearby galaxies and integrated spectra of more distant galaxies, it has been recently claimed that the DIG can also deeply affect the emission of bright, star-forming galaxies, and that a large correction must be applied to observed line ratios to recover the genuine contribution from H ii regions. Here we show instead that the e?ect of DIG on the integrated spectra of star-forming galaxies is lower than assumed in previous work. Indeed, aperture effects on the spectroscopy of nearby H ii regions are largely responsible for the observed difference: when spectra of local H ii regions are extracted using large enough apertures while still avoiding the DIG, the observed line ratios are the same as in more distant galaxies. This result is highly relevant for the use of strong-line methods to measure metallicity.

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“…AGN outflows have been detected at different scales, extending from a few parsecs to kiloparsecs (e.g. Storchi-Bergmann et al 2010;Veilleux et al 2013;Cresci et al 2015a;Feruglio et al 2015;Kakkad et al 2016Kakkad et al , 2020McElroy et al 2016;Rupke et al 2017;Jarvis et al 2019;Marasco et al 2020;Vietri et al 2018Vietri et al , 2020. In addition, outflows have been observed in multiple gas phases: neutral and ionised as well as atomic and molecular (Cicone et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Super

Lamperti

Harrison

Mainieri

et al. 2021

A&A

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We study the impact of active galactic nuclei (AGN) ionised outflows on star formation in high-redshift AGN host galaxies, by combining near-infrared integral field spectroscopic (IFS) observations, mapping the Hα emission and [O III]λ5007 outflows, with matched-resolution observations of the rest-frame far-infrared (FIR) emission. We present high-resolution ALMA Band 7 observations of eight X-ray selected AGN (L2 − 10 keV = 1043.8 − 1045.2 erg s−1) at z ∼ 2 from the SUPER (SINFONI Survey for Unveiling the Physics and Effect of Radiative feedback) sample, targeting the observed-frame 870 μm (rest-frame ∼260 μm) continuum at ∼2 kpc (0.2″) spatial resolution. The targets were selected among the SUPER AGN with an [O III] detection in the IFS maps and with a detection in the FIR photometry. We detected six out of eight targets with signal-to-noise ratio S/N ≳ 10 in the ALMA maps, from which we measured continuum flux densities in the range 0.27 − 2.58 mJy and FIR half-light radii (Re) in the range 0.8 − 2.1 kpc. The other two targets were detected with S/N of 3.6 and 5.9, which are insufficient for spatially resolved analysis. The FIR Re of our sample are comparable to other AGN and star-forming galaxies at a similar redshift from the literature. However, combining our sample with the literature samples, we find that the mean FIR size in X-ray AGN (Re = 1.16 ± 0.11 kpc) is slightly smaller than in non-AGN (Re = 1.69 ± 0.13 kpc). From spectral energy distribution fitting, we find that the main contribution to the 260 μm flux density is dust heated by star formation, with ≤4% contribution from AGN-heated dust and ≤1% from synchrotron emission. The majority of our sample show different morphologies for the FIR (mostly due to reprocessed stellar emission) and the ionised gas emission (Hα and [O III], mostly due to AGN emission). This could be due to the different locations of dust and ionised gas, the different sources of the emission (stars and AGN), or the effect of dust obscuration. We are unable to identify any residual Hα emission, above that dominated by AGN, that could be attributed to star formation. Under the assumption that the FIR emission is a reliable tracer of obscured star formation, we find that the obscured star formation activity in these AGN host galaxies is not clearly affected by the ionised outflows. However, we cannot rule out that star formation suppression is happening on smaller spatial scales than the ones we probe with our observations (< 2 kpc) or on different timescales.

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Galaxy-scale ionised winds driven by ultra-fast outflows in two nearby quasars

Cited by 47 publications

References 118 publications

MAGNUM survey: Compact jets causing large turmoil in galaxies

MAGNUM survey: Compact jets causing large turmoil in galaxies

The diffuse ionized gas (DIG) in star-forming galaxies: the influence of aperture effects on local H ii regions

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