J/A+A/634/A125ivo://CDS.VizieR/J/A+A/634/A125doi:10.26093/cds/vizier.36340125CDSQiu J.Zhang J.Zhang Y.Jia L.Tang X.2020-08-19T13:37:05Z2020-02-21T07:56:28ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiradio-spectroscopyWe investigate the physical and chemical conditions of molecular gas in the circumnuclear disk (CND) region of NGC 1068. We carried out a spectral line survey with the IRAM 30m telescope toward the center of NGC 1068 and mainly focused on the 2mm band with a frequency coverage of 160.7-168.6GHz and 176.5-184.3GHz. Fifteen lines are detected in NGC 1068, eight of which are new detections for this galaxy. We derive the rotation temperatures and column densities of fourteen molecular species. Based on the [HCO^+^ (2-1)]/[HOC^+^ (2-1)] ratio, we obtain a high ionization degree in the CND of NGC 1068. It is found that HC_3_N is concentrated in the east knot, while ^13^CCH, CH_3_CN, SO, HOC^+^, CS, CH_3_CCH, and H_2_CO are concentrated in the west knot. Compared to the star-forming galaxies M 82 and NGC 253, the chemistry of NGC 1068 might be less strongly affected by the UV radiation field, and its kinetic temperature might be lower.2020A&A...634A.125Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/634/A125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/602/A78 : NGC1068 interferometric mid-IR measurementsJ/A+A/613/A3 : NGC 1068 deep millimeter spectroscopy observations (Qiu+ 2018)J/A+A/625/A100 : NGC 1068 SPHERE-VLT images (Rouan+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/634/A125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/634/A125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/634/A125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/634/A125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/634/A125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/634/A125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/634/A125/list (List of fits spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/634/A125/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/634/A125/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/634/A125/list?GETtext/xml+votable180.050000true40.66958-0.013330.0055555555555555566/17754https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/634/A125?format=asciiMillimeterdefaultJ/A+A/634/A125/listList of fits spectraspShow the spectrummeta.ref.urlcharrecnoRecord 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.numberintObs.dateObservation datestime.epoch;obsnullablebFreqLower value of relative frequencyGHzem.freq;stat.mindoubleBFreqUpper value of relative frequencyGHzem.freq;stat.maxdoubledFreqFrequency resolutionHzspect.resolutiondoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar