Quantifying the AGN-driven outflows in ULIRGs (QUADROS) – II. Evidence for compact outflow regions from HST [O III] imaging observations

Tadhunter, C. N.; Zaurín, J. Rodríguez; Rose, M.; Spence, R.; Batcheldor, D.; Berg, Michelle A.; Almeida, C. Ramos; Spoon, H. W. W.; Sparks, W. B.; Chiaberge, M.

doi:10.1093/mnras/sty1064

Cited by 35 publications

(46 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To summarise, in cases where we can measure the radial extents of the warm outflows in the CSS and GPS objects using HST narrow-band imaging or X-shooter spectro-astrometry, we find that they are relatively compact -within a factor of 2 of the radio source extents -and fall in the range 0.06 < r < 1.9 kpc. Interestingly, this range is similar to that measured for the warm outflows in nearby ultraluminous infrared galaxies (ULIRGs) by Rose et al (2018), Spence et al (2018) and Tadhunter et al (2018), despite the fact that the outflows in CSS and GPS source are likely to be driven by the radio jets, whereas those in the most ULIRGs are probably driven by hot winds accelerated by radiation pressure close to the AGN. In subsequent calculations of the general properties of the warm outflows we use the best available outflow radius estimate available for each object, as derived using the technique indicated in the final column of Table 7.…”

Section: Objectsupporting

confidence: 81%

“…On the other hand, in "quasar mode" feedback, the outflows driven by radiatively efficient AGN act to heat and expel the pre-existing cooler gas in the host galaxies that would otherwise form stars. The range of radial scales over which this form of feedback operates is currently controversial, with estimates ranging from tens of pc to >10 kpc (Greene et al 2012;Harrison et al 2012Harrison et al , 2014Liu et al 2013;Husemann et al 2016;Villar-Martín et al 2016;Tadhunter et al 2018;Revalski et al 2018;Fischer et al 2018; Baron & Netzer 2019a). Although this feedback mode is often linked to winds driven by the radiation pressure of the central AGN (King & Pounds 2015), relativistic jets may play a significant role, even in cases in which the radio luminosity is relatively modest (L 1.4 GHz < 10 24 W Hz −1 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

AGN-driven outflows and the AGN feedback efficiency in young radio galaxies

Santoro

Tadhunter

Baron

et al. 2020

A&A

View full text Add to dashboard Cite

Active galactic nuclei (AGN) feedback operated by the expansion of radio jets can play a crucial role in driving gaseous outflows on galaxy scales. Galaxies hosting young radio AGN, whose jets are in the first phases of expansion through the surrounding interstellar medium (ISM), are the ideal targets to probe the energetic significance of this mechanism. In this paper, we characterise the warm ionised gas outflows in a sample of nine young radio sources from the 2 Jy sample, combining X-shooter spectroscopy and Hubble Space Telescope imaging data. We find that the warm outflows have similar radial extents (∼0.06−2 kpc) as radio sources, consistent with the idea that “jet mode” AGN feedback is the dominant driver of the outflows detected in young radio galaxies. Exploiting the broad spectral coverage of the X-shooter data, we used the ratios of trans-auroral emission lines of [S II] and [O II] to estimate the electron densities, finding that most of the outflows have gas densities (log(ne cm−3) ∼ 3 − 4.8), which we speculate could be the result of compression by jet-induced shocks. Combining our estimates of the emission-line luminosities, radii, and densities, we find that the kinetic powers of the warm outflows are a relatively small fraction of the energies available from the accretion of material onto the central supermassive black hole, reflecting AGN feedback efficiencies below 1% in most cases. Overall, the warm outflows detected in our sample are strikingly similar to those found in nearby ultraluminous infrared galaxies, but more energetic and with higher feedback efficiencies on average than the general population of nearby AGN of similar bolometric luminosity; this is likely to reflect a high degree of coupling between the jets and the near-nuclear ISM in the early stages of radio source evolution.

show abstract

Section: Objectsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

AGN-driven outflows and the AGN feedback efficiency in young radio galaxies

Santoro

Tadhunter

Baron

et al. 2020

A&A

View full text Add to dashboard Cite

show abstract

“…This may be partially related to differences in the definition of the wind location, which we further discuss in section 5.1. The distribution is more consistent with wind location estimates that are based on HST observations, or studies that correct for beam-smearing in seeing-limited observations (e.g., Husemann et al 2016;Villar-Martín et al 2016;Fischer et al 2018;Tadhunter et al 2018).…”

Section: Wind Locationsupporting

confidence: 79%

Discovering AGN-driven winds through their infrared emission – I. General method and wind location

Baron

Netzer

2018

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Large scale outflows of different gas phases are ubiquitous in the host galaxies of active galactic nuclei (AGN). Despite their many differences, they share a common property -they all contain dust. The dust is carried with the outflow, heated by the AGN, and emits at infrared wavelengths. This paper shows that the infrared emission of this dust can be used to detect AGN outflows and derive their properties. We use a sample of ∼4 000 type II AGN and compare the infrared properties of systems that show spectroscopic signature of ionized gas outflows to systems that do not. We detect an additional mid-infrared emission component in galaxies with spectroscopically discovered winds, and attribute it to the dust in the outflow. This new component offers novel constraints on the outflow properties, such as its mean location and covering factor. We measure the location of the outflow for ∼1 700 systems, with the distribution showing a prominent peak around r ∼ 500 pc, a tail that extends to large distances (∼10 kpc), and no objects with a location smaller than 50 pc. The covering factor of the wind shows a wide distribution which is centered around 0.1, with 24% (8%) of the winds showing covering factors larger than 0.2 (0.5). The dust emission is not sensitive to various systematics affecting optically-selected outflows, and can be used to estimate the mass outflow rate in thousands of galaxies with only 1D spectra.

show abstract

“…Some studies reported ubiquitous outflow sizes of several kpc scales (e.g. Harrison et al 2014;McElroy et al 2015;Liu et al 2013a,b), but recently much lower outflow sizes of <1 kpc were reported in several studies (Husemann et al 2016a;Villar-Martín et al 2016;Tadhunter et al 2018; Baron & Netzer 2019). The difference may partially be explained due to the effect of beam smearing in seeing-limited observations (Husemann et al 2016a).…”

Section: Introductionmentioning

confidence: 95%

The Close AGN Reference Survey (CARS)

Husemann

Scharwächter

Davis

et al. 2019

A&A

View full text Add to dashboard Cite

Context. Galaxy-wide outflows driven by star formation and/or an active galactic nucleus (AGN) are thought to play a crucial rule in the evolution of galaxies and the metal enrichment of the inter-galactic medium. Direct measurements of these processes are still scarce and new observations are needed to reveal the nature of outflows in the majority of the galaxy population. Aims. We combine extensive, spatially-resolved, multi-wavelength observations, taken as part of the Close AGN Reference Survey (CARS), for the edge-on disc galaxy HE 1353−1917 in order to characterise the impact of the AGN on its host galaxy via outflows and radiation. Methods. Multi-color broad-band photometry was combined with spatially-resolved optical, near-infrared (NIR) and sub-mm and radio observations taken with the Multi-Unit Spectroscopy Explorer (MUSE), the Near-infrared Integral Field Spectrometer (NIFS), the Atacama Large Millimeter Array (ALMA), and the Karl G. Jansky Very Large Array (VLA) to map the physical properties and kinematics of the multi-phase interstellar medium. Results. We detect a biconical extended narrow-line region ionised by the luminous AGN orientated nearly parallel to the galaxy disc, extending out to at least 25 kpc. The extra-planar gas originates from galactic fountains initiated by star formation processes in the disc, rather than an AGN outflow, as shown by the kinematics and the metallicity of the gas. Nevertheless, a fast, multi-phase, AGN-driven outflow with speeds up to 1000 km s−1 is detected close to the nucleus at 1 kpc distance. A radio jet, in connection with the AGN radiation field, is likely responsible for driving the outflow as confirmed by the energetics and the spatial alignment of the jet and multi-phase outflow. Evidence for negative AGN feedback suppressing the star formation rate (SFR) is mild and restricted to the central kpc. But while any SFR suppression must have happened recently, the outflow has the potential to greatly impact the future evolution of the galaxy disc due to its geometrical orientation. Conclusions.. Our observations reveal that low-power radio jets can play a major role in driving fast, multi-phase, galaxy-scale outflows even in radio-quiet AGN. Since the outflow energetics for HE 1353−1917 are consistent with literature, scaling relation of AGN-driven outflows the contribution of radio jets as the driving mechanisms still needs to be systematically explored.

show abstract

Quantifying the AGN-driven outflows in ULIRGs (QUADROS) – II. Evidence for compact outflow regions from HST [O III] imaging observations

Cited by 35 publications

References 48 publications

AGN-driven outflows and the AGN feedback efficiency in young radio galaxies

AGN-driven outflows and the AGN feedback efficiency in young radio galaxies

Discovering AGN-driven winds through their infrared emission – I. General method and wind location

The Close AGN Reference Survey (CARS)

Contact Info

Product

Resources

About