J/A+A/604/A43ivo://CDS.VizieR/J/A+A/604/A43doi:10.26093/cds/vizier.36040043CDSMaccagni F.M.Morganti R.Oosterloo T.A.Gereb K.Maddox N.2018-12-19T08:10:01Z2017-10-24T15:23:42ZCDS support team

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

cds-question@unistra.frradio-galaxiesgalaxiesh-i-line-emissionWe present an analysis of the properties of neutral hydrogen (HI) in 248 nearby (0.02<z<0.25) radio galaxies with S_1.4GHz_>30mJy and for which optical spectroscopy is available. The observations were carried out with the Westerbork Synthesis Radio Telescope as the last large project before the upgrade of the telescope with phased array feed receivers (Apertif). The sample covers almost four orders of magnitude in radio power from logP_1.4GHz_=22.5W/Hz and 26.2W/Hz. We detect HI in absorption in 27%+/-5.5% of the objects. The detections are found over the full range of radio power. However, the distribution and kinematics of the absorbing HI gas appear to depend on radio power, the properties of the radio continuum emission, and the dust content of the sources. Among the sources where HI is detected, gas with kinematics deviating from regular rotation is more likely found as the radio power increases.In the great majority of these cases, the HI profile is asymmetric with a significant blue-shifted component. This is particularly common for sources with logP_1.4GHz_>24W/Hz, where the radio emission is small, possibly because these radio sources are young. The same is found for sources that are bright in the mid-infrared, i.e. sources rich in heated dust.In these sources, the HI is outflowing likely under the effect of the interaction with the radio emission. Conversely, in dust-poor galaxies, and in sources with extended radio emission, at all radio powers we only detect HI distributed in a rotating disk. Stacking experiments show that in sources for which we do not detect HI in absorption directly, the HI has a column density that is lower than 3.5x10^17^(T_spin_/c_f_)cm^-2^. We use our results to predict the number and type of HI absorption lines that will be detected by the upcoming surveys of the Square Kilometre Array precursors and pathfinders (Apertif, MeerKAT, and ASKAP).2017A&A...604A..43Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/604/A43CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/575/A44 : HI absorption in flux-selected radio AGNs (Gereb+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/604/A43https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/604/A43http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/604/A43https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/604/A43https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/604/A43http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/604/A43GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/604/A43/tablea1 (*Table of sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/604/A43/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/604/A43/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/604/A43/tablea1?GETtext/xml+votable180.050000true117.988833352.38588890.0055555555555555566/4255 4276 4289 4340 4394 4412 4420 4429 4506 4515 4579 4666 4672 4705 4731 4758 4807 4861 4865 4925 4927 4976 4988 5005 5180 5225 5240 5375 5377 5528 5569 5583 5616 5618 5642 5666 5680 5723 5889 5894 5900 5930 5975 6010 6022 6125 6127 6140 6212 6261 6436 6451 6477 6499 6502 6515 6519 6526 6532 6534-6535 6554 6583 6611 6618 6620 6648 6654 6993 7196 7265 7282 7285 7301 7351 7552 8283 8299 8348 8391 8414 8438 8483 8514 8521 8526 8556 8576 8637 8657-8659 8684 8705 8720 8786 8793 8846 8850 8884 8900 8917 9009 9037 9043 9049 9060 9075 9078 9169 9200 9245 9264 9269 9312 9324 9350-9351 9357 9376 9387 9443 9453 9472 9476 9510 9531 9744 9764 9771 9830 9839 9855 9892 9931 9956 9981 9991 10027 10120 10182 10311 10325 10343 10348 10355 10402 10404 10465 10491 10579 10605 10627 10656 10682 10718 10748-10749 10758 10764 10784 10830 10835 10850 10865 10868 10877 10941 10959 10975 11001 11029 11038 11101 11136 11242 11255 11287 11355 11381 11385 11398 11410 11426 11512 11792 11908 26459 26487 26491 26547 26580 26584 26607 27481 27543 27607 27641 27769 27853 27894 27960 27963 27967 28003 28005 28036 28038 28075 28126 28249 28270 28298 28307 28339 28350 28370 28407 28414-28415 28443 28465 28517 28524 28534 28547 28608 28617 28643 31599 31677 31697 32445 32456 32458 324939.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/604/A43?format=asciiRadiodefaultJ/A+A/604/A43/tablea1*Table of sourcesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharn_Source[*] Note on Source (1)meta.notecharzoptOptical redshift measured from the SDSS spectrumsrc.redshift;pos.heliocentricfloatS1.4GHzFlux density at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatP1.4GHzRadio power at 1.4GHzW/Hzphys.luminosity;em.radio.750-1500MHzfloatRType[CEI] Radio type (2)src.classcharWTypeWISE type (3)src.classcharl_NoiseLimit flag on Noisemeta.code.error;instr.det.noisecharNoise3{sigma} detection limit of the HI spectrummJyinstr.sensitivityfloattauPeak? Peak optical depth of the HI detectionphys.absorption.opticalDepth;stat.maxfloatnullableInttaudv? Integrated optical depth of the HI linekm/sspect.line.widthfloatnullableFWHM? Full width at half maximumkm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableFW20? Full width at 20% of the peak fluxkm/sspect.line.widthfloatnullablee_FW20? rms uncertainty on FW20km/sstat.errorfloatnullableCent? Position of the centroid of the linekm/sstat.fit.paramfloatnullablee_Cent? rms uncertainty on Centkm/sstat.errorfloatnullable_RAPositions from Name (right ascension part)degpos.eq.ra;meta.main_DEPositions from Name (declination part)degpos.eq.dec;meta.main