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

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dc.contributor.authorMarasco, A.
dc.contributor.authorCresci, G.
dc.contributor.authorNardini, E.
dc.contributor.authorMannucci, F.
dc.contributor.authorMarconi, A.
dc.contributor.authorTozzi, P.
dc.contributor.authorTozzi, G.
dc.contributor.authorAmiri, A.
dc.contributor.authorVenturi, G.
dc.contributor.authorPiconcelli, E.
dc.contributor.authorLanzuisi, G.
dc.contributor.authorTombesi, F.
dc.contributor.authorMingozzi, M.
dc.contributor.authorPerna, M.
dc.contributor.authorCarniani, S.
dc.contributor.authorBrusa, M.
dc.contributor.authorAlighieri, S. di Serego
dc.date.accessioned2025-01-23T19:46:56Z
dc.date.available2025-01-23T19:46:56Z
dc.date.issued2020
dc.description.abstractWe used MUSE adaptive optics data in narrow field mode to study the properties of the ionised gas in MR 2251-178 and PG 1126-041, two nearby (z similar or equal to 0.06) bright quasars (QSOs) hosting sub-pc scale ultra-fast outflows (UFOs) detected in the X-ray band. We decomposed the optical emission from diffuse gas into a low- and a high-velocity components. The former is characterised by a clean, regular velocity field and a low (similar to 80 km s(-1)) velocity dispersion. It traces regularly rotating gas in PG 1126-041, while in MR 2251-178 it is possibly associated with tidal debris from a recent merger or flyby. The other component is found to be extended up to a few kpc from the nuclei, and shows a high (similar to 800 km s(-1)) velocity dispersion and a blue-shifted mean velocity, as is expected from outflows driven by active galactic nuclei (AGN). We estimate mass outflow rates up to a few M-circle dot yr(-1) and kinetic efficiencies L-KIN/L-BOL between 1-4x10(-4), in line with those of galaxies hosting AGN of similar luminosities. The momentum rates of these ionised outflows are comparable to those measured for the UFOs at sub-pc scales, which is consistent with a momentum-driven wind propagation. Pure energy-driven winds are excluded unless about 100x additional momentum is locked in massive molecular winds. In comparing the outflow properties of our sources with those of a small sample of well-studied QSOs hosting UFOs from the literature, we find that winds seem to systematically lie either in a momentum-driven or an energy-driven regime, indicating that these two theoretical models bracket the physics of AGN-driven winds very well.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/202038889
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/202038889
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100332
dc.identifier.wosidWOS:000595814800002
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectquasars: individual: MR 2251-178
dc.subjectquasars: individual: PG 1126-041
dc.subjectISM: jets and outflows
dc.subjecttechniques: imaging spectroscopy
dc.subjectgalaxies: ISM
dc.titleGalaxy-scale ionised winds driven by ultra-fast outflows in two nearby quasars
dc.typeartículo
dc.volumen644
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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