J/MNRAS/430/1961ivo://CDS.VizieR/J/MNRAS/430/1961doi:10.26093/cds/vizier.74301961CDSDavies M.L.Stefan I.I.Bolton R.C.Carpenter J.M.Franzen T.M.O.,Grainge K.J.B.Green D.A.Hobson M.P.Hurley-Walker N.Lasenby A.N.,Olamaie M.Perrott Y.C.Pooley G.G.Riley J.M.Rodriguez-Gonzalvez C.,Saunders R.D.E.Scaife A.M.M.Schammel M.P.Scott P.F.Shimwell T.W.,Titterington D.J.Waldram E.M.Whittam I.H.2024-07-21T20:14:03Z2013-12-16T09:42:46ZCDS support team

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

cds-question@unistra.frradio-sourcesradio-continuum-emissionWe present results from follow-up observations of a sample of 80 radio sources, originally detected as part of the 15.2-GHz Ninth Cambridge (9C) survey. The observations were carried out, close to simultaneously, at two frequencies: 15.7GHz, using the Arcminute Microkelvin Imager (AMI) Large Array, and 93.2GHz, using the Combined Array for Research in Millimeter-wave Astronomy (CARMA). There is currently little direct information on the 90-GHz-band source count for S<~1Jy. However, we have used the measured 15.7-to-93.2-GHz spectral-index distribution and 9C source count to predict the differential source count at 93.2GHz as 26+/-4(S/Jy)^-2.15^Jy^-1^sr^-1^; our projection is estimated to be most accurate for 10<~S<~100mJy. Our estimated differential count is more than twice the 90-GHz prediction made by Waldram et al. (2007, Cat. J/MNRAS/379/1442); we believe that this discrepancy is because the measured 43-GHz flux densities used in making their prediction were too low. Similarly, our prediction is significantly higher than that of Sadler et al. (2008, Cat. J/MNRAS/385/1656) at 95GHz. Since our spectral-index distribution is similar to the 20-to-95-GHz distribution measured by Sadler et al. and used in making their prediction, we believe that the difference is almost entirely attributable to the dissimilarity in the lower frequency counts used in making the estimates.2013MNRAS.430.1961Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/430/1961CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/415/893 : AMI-LA 16 GHz sources in Perseus region (Scaife+, 2011)J/MNRAS/404/1005 : Deep 15GHz survey (9C continued) (Waldram+, 2010)J/MNRAS/385/1656 : Extragalactic radio-sources at 95GHz (Sadler+, 2008)J/MNRAS/379/1442 : Multifrequency observations of 9C sources (Waldram+, 2007)J/MNRAS/354/485 : Radio flux of 15-GHz 9C survey (Bolton+, 2004)J/MNRAS/342/915 : 9C survey at 15GHz (Waldram+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/430/1961https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/430/1961http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/430/1961https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/430/1961https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/430/1961http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/430/1961GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/430/1961/table1 (Measured 15.7-GHz and 93.2-GHz flux densities for the 9C samples)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/430/1961/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/430/1961/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/430/1961/table1?GETtext/xml+votable180.050000true0.71833329.7147220.0055555555555555565/5075 5080 6/2594 9175 9181 9183 9213 9789 9791 9825 9834 9836 9838 9857 9860 9865 9867 9879 9882-9883 9893 9900 9903 9906 9910-9911 9924 9930 11270 19949 20255 20277-20278 20297-20298 20304 20306 20312-20313 20315 20324-20325 20327 20329-20330 20332 20337-20339 20341-20342 20344-20345 20420 20433-204341.0402929099001329e-23 6.17549663731547e-23https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/430/1961?format=asciiRadiodefaultJ/MNRAS/430/1961/table1Measured 15.7-GHz and 93.2-GHz flux densities for the 9C samplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint9C9C identification (JHHMM+DDMM)meta.id;meta.maincharS15.7[11.8/381] 15.7GHz flux densitymJyphot.flux.density;em.radio.12-30GHzfloate_S15.7[0.7/20] S15.7 uncertaintymJystat.errorfloatl_S93.2Limit flag on S93.2meta.code.errorcharS93.2[1.7/232] 93.2GHz flux densitymJyphot.flux.density;em.mm.50-100GHzfloate_S93.2[0.4/9] S93.2 thermal (Tml) uncertaintymJystat.errorfloatE_S93.20.5/24] S93.2 total uncertainty (1)mJystat.error;stat.maxfloatl_alphaLimit flag on alphameta.code.error;pos.eq.racharalpha[-0.6/1.5] 15.7-to-93.2-GHz spectral indexspect.indexfloate_alpha[0.07/0.5]? alpha uncertainty (2)stat.error;pos.eq.rafloatnullableSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar_RAPositions from Bolton et al., 2004, Cat. J/MNRAS/354/485 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Bolton et al., 2004, Cat. J/MNRAS/354/485 (declination part)degpos.eq.dec;meta.main