J/A+A/693/A36ivo://CDS.VizieR/J/A+A/693/A36doi:10.26093/cds/vizier.36930036CDSUlivi L.Perna M.Lamperti I.Arribas S.Cresci G.Marconcini C.,Rodriguez Del Pino B.Boeker T.Bunker A.J.Ceci M.Charlot S.,D'Eugenio F.Fahrion K.Maiolino R.Marconi A.Pereira-Santaella M.2025-03-03T20:01:40Z2025-01-03T13:57:40ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiinfrared-sourcesspectroscopyThe study of starburst and active galactic nuclei (AGN) feedback is crucial for understanding the regulation of star formation and the evolution of galaxies across cosmic time. Arp 220, the closest ultraluminous infrared galaxy (ULIRG), is in an advanced phase of a major merger with two distinct nuclei, and it shows evidence of multiphase (molecular, ionized, and neutral) and multiscale (from <0.1 to >5kpc) outflows. Therefore, it represents an ideal system for investigating outflow mechanisms and feedback phenomena in detail. Using new JWST NIRSpec IFU observations, we investigated the spatially resolved gaseous (in both ionized and hot molecular phases) and stellar kinematics in the innermost 1kpc. We decoupled the different gas kinematic components through multi-Gaussian fitting, identifying two multiphase outflows, each associated with one nucleus, with velocities up to ~1000km/s. We also resolved two counter-rotating discs around each nucleus embedded in a larger-scale rotational disk. We compute the total (including ionized, cold, and hot molecular) outflow mass (~=10^7^M_{sun}_), the mass rate (~=15M_{sun}_/yr), and the energetics ( dEout/dt~=10^42^erg/s) for each nucleus, and we found that the ionized and hot molecular outflowing gas contribute around 2-30% of the total mass and the energy of the outflows, as inferred from the combination of multiwavelength information. We discuss the possible origin of the outflows, finding no compelling evidence to prefer a starburst- or AGN-driven scenario. Regardless of their nature, outflows in Arp 220 propagate in multiple directions from parsec to kiloparsec scales, potentially impacting a significant portion of the host galaxy. This contrasts with isolated systems where outflows typically follow a more collimated path or are limited to the central region of the galaxy and hence do not affect the interstellar medium throughout the entire galaxy. This study highlights the importance of investigating merging systems with multiwavelength facilities, including JWST NIRSpec IFU, to obtain a comprehensive understanding of feedback mechanisms in galaxy evolution.2025A&A...693A..36Uhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/693/A36CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/799/10 : Arp 220 6 and 33GHz images (Barcos-Munoz+, 2015)J/A+A/590/A25 : Arp 220 HCN and HCO^+^ data cubes (Martin+, 2016)J/A+A/593/A86 : Arp 220 LOFAR radio images at 150MHz (Varenius+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/693/A36https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/693/A36http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/693/A36https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/693/A36https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/693/A36http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/693/A36GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/693/A36/list (List of fits datacubes and spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/693/A36/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/693/A36/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/693/A36/list?GETtext/xml+votable180.050000true233.738423.503310.0055555555555555566/8673https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/693/A36?format=asciiInfrareddefaultJ/A+A/693/A36/listList of fits datacubes and spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNz? Number of pixels along Z-axismeta.numberintnullableblambda? Lower value of wavelength intervalem.wldoublenullableBlambda? Upper value of wavelength intervalem.wldoublenullabledlambda? Wavelength resolutionspect.resolutiondoublenullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar