J/A+A/629/A30ivo://CDS.VizieR/J/A+A/629/A30doi:10.26093/cds/vizier.36290030CDSFotopoulou C.M.Dasyra K.M.Combes F.Salome P.Papachristou M.2019-09-02T08:14:55Z2019-08-30T07:32:17ZCDS support team

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

cds-question@unistra.frradio-galaxiesinterstellar-mediumco-line-emissionThe nearby system 4C12.50, also known as IRAS 13451+1217 and PKS 1345+12, is a merger of gas-rich galaxies with infrared and radio activity. It has a perturbed interstellar medium (ISM) and a dense configuration of gas and dust around the nucleus. The radio emission at small (~100pc) and large (~100kpc) scales, as well as the large X-ray cavity in which the system is embedded, are indicative of a jet that could have affected the ISM. We carried out observations of the CO(1-0), (3-2), and (4-3) lines with the Atacama Large Millimeter Array (ALMA) to determine basic properties (i.e., extent, mass, and excitation) of the cold molecular gas in this system, including its already-known wind. The CO emission reveals the presence of gaseous streams related to the merger, which result in a small (4kpc-wide) disk around the western nucleus. The disk reaches a rotational velocity of 200km/s, and has a mass of 3.8(+/-0.4)10^9^M_{sun}_. It is truncated at a gaseous ridge north of the nucleus that is bright in [OIII]. Regions with high-velocity CO emission are seen at signal-to-noise ratios of between 3 and 5 along filaments that radially extend from the nucleus to the ridge and that are bright in [O iii] and stellar emission. A tentative wind detection is also reported in the nucleus and in the disk. The molecular gas speed could be as high as 2200km/s and the total wind mass could be as high as 1.5(+/-0.1)10^9^M_{sun}_. Energetically, it is possible that the jet, assisted by the radiation pressure of the active nucleus or the stars, accelerated clouds inside an expanding bubble.2019A&A...629A..30Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/629/A30CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/629/A30https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/629/A30http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/629/A30https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/629/A30https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/629/A30http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/629/A30GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/629/A30/list (List of datacubes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/629/A30/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/629/A30/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/629/A30/list?GETtext/xml+votable180.050000true206.8890112.290070.0055555555555555566/26491https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/629/A30?format=asciiRadiodefaultJ/A+A/629/A30/listList of datacubesNzNumber of slicesmeta.numberintrecnoRecord 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.numberintObs.dateObservation datestime.epoch;obsnullablebVRADLower value of VRAD intervalkm/sphys.velocdoubleBVRADUpper value of VRAD intervalkm/sphys.velocdoubledVRADVRAD resolutionkm/spos.angResolutionintsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits