18-cm OH lines in cometsJ/A+A/393/1053ivo://CDS.VizieR/J/A+A/393/1053doi:10.26093/cds/vizier.33931053CDSCrovisier J.Colom P.Gerard E.Bockelee-Morvan D.Bourgois G.2017-06-21T08:22:34Z2003-02-02T22:26:53ZCDS support team
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
cds-question@unistra.frsolar-systemradio-astronomycometsSince the apparition of comet Kohoutek 1973 XII, the 18-cm lines of the OH radical have been systematically observed in a number of comets with the Nancay radio telescope. Between 1973 and 1999, 52 comets have been successfully detected. This allowed an evaluation of the cometary water production rates and their evolution with time, as well as a study of several physical processes such as the excitation mechanisms of the OH radio lines, the expansion of cometary atmospheres, their anisotropy in relation to non-gravitational forces, and the Zeeman effect in relation to the cometary magnetic field. Part of these observations and their analysis have already been published. The bulk of the results are now organized in a data base. The present paper is a general presentation of the Nancay cometary data base and a more specific description of the observations of 53 cometary apparitions between 1982 and 1999. Comets observed before 1982 are only partly incorporated in the data base. Observations of comets since 2000 have benefited from a major upgrade of the telescope; they will be presented in forthcoming publications.2002A&A...393.1053Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/393/1053CatalogResearchIsServedByTAP VizieR generic servicerelated-tohttp://wwwusr.obspm.fr/~crovisie/basecom : The data basehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/393/1053https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/393/1053http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/393/1053https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/393/1053https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/393/1053http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/393/1053GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/A+A/393/1053/indexName of studied cometsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the cometmeta.idintprimaryName1Old-style definitive designationmeta.idcharName2Od-style provisional designationmeta.idcharName3New-style designationmeta.idchar
J/A+A/393/1053/tablesaSum spectrum informationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the comet (see index.dat)meta.idintDate1Date of observation (single spectrum) or first date of range of integration (sum spectrum)time.epochnullableDate2Last date of range of integration (sum spectrum)time.epochnullabledeltaGeocentric distanceAUpos.distancefloatrHeliocentric distanceAUpos.distancefloatHRVHeliocentric radial velocitykm/sphys.veloc;pos.heliocentricfloatinv1OH maser population inversion (model of Despois et al., 1981A&A....99..320D (G1)stat.paramfloatinv2OH maser inversion (model of Schleicher & A'Hearn, 1988ApJ...331.1058S) (G1)stat.paramfloatTbgBackground brightness temperatureKinstr.skyTempfloatareaLine areamJy.km/sspect.line.intensityinte_arearms error on line areamJy.km/sstat.errorintS? Line maximum intensitymJyphot.flux.density;em.radio.1500-3000MHzintnullablee_S? rms error on line maximum intensitymJystat.errorintnullableVo? Line central velocitykm/sspect.dopplerVeloc;spect.linefloatnullablee_Vo? rms error on line central velocitykm/sstat.errorfloatnullabledVo? Line width at half maximumkm/sspect.line.widthfloatnullablee_dVo? rms error on line width at half maximumkm/sstat.errorfloatnullablel_Q[OH]Limit flag on Q[OH] (1)meta.code.errorcharQ[OH]? OH production rate (Haser-eq. model with quenching)1e+28s**-1stat.paramfloatnullablee_Q[OH]? rms error on OH production rate1e+28s**-1stat.errorfloatnullablel_Q[OH]2Limit flag on Q[OH]2 (1)meta.code.errorcharQ[OH]2? OH production rate (1986A model)1e+28s**-1stat.paramdoublenullablee_Q[OH]2? rms error on OH production rate1e+28s**-1stat.errorfloatnullableFigFigure number (in electronic version of the paper)meta.bib.figcharSpFileSpectrum file name in sub-directory spectra (G2)meta.id;meta.filechar
J/A+A/393/1053/tablesbSingle spectrum informationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the comet (see index.dat)meta.idintDate1Date of observation (single spectrum) or first date of range of integration (sum spectrum)time.epochnullableDate2Last date of range of integration (sum spectrum)time.epochnullabledeltaGeocentric distanceAUpos.distancefloatrHeliocentric distanceAUpos.distancefloatHRVHeliocentric radial velocitykm/sphys.veloc;pos.heliocentricfloatinv1OH maser population inversion (model of Despois et al., 1981A&A....99..320D (G1)stat.paramfloatinv2OH maser inversion (model of Schleicher & A'Hearn, 1988ApJ...331.1058S) (G1)stat.paramfloatTbgBackground brightness temperatureKinstr.skyTempfloatareaLine areamJy.km/sspect.line.intensityinte_arearms error on line areamJy.km/sstat.errorintS? Line maximum intensitymJyphot.flux.density;em.radio.1500-3000MHzintnullablee_S? rms error on line maximum intensitymJystat.errorintnullableVo? Line central velocitykm/sspect.dopplerVeloc;spect.linefloatnullablee_Vo? rms error on line central velocitykm/sstat.errorfloatnullabledVo? Line width at half maximumkm/sspect.line.widthfloatnullablee_dVo? rms error on line width at half maximumkm/sstat.errorfloatnullablel_Q[OH]Limit flag on Q[OH] (1)meta.code.errorcharQ[OH]? OH production rate (Haser-eq. model with quenching)1e+28s**-1stat.paramfloatnullablee_Q[OH]? rms error on OH production rate1e+28s**-1stat.errorfloatnullablel_Q[OH]2Limit flag on Q[OH]2 (1)meta.code.errorcharQ[OH]2? OH production rate (1986A model)1e+28s**-1stat.paramdoublenullablee_Q[OH]2? rms error on OH production rate1e+28s**-1stat.errorfloatnullableFigFigure number (in electronic version of the paper)meta.bib.figcharSpFileSpectrum file name in sub-directory spectra (G2)meta.id;meta.filechar
J/A+A/393/1053/tablescSpectrum taken at an offset position (for 11, 23, 28 and 44)e_S? rms error on line maximum intensitymJystat.errorintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential number of the comet (see index.dat)meta.idintDateDate of observation YYYY/MM/DD.DDtime.epochnullabledeltaGeocentric distanceAUpos.distancefloatrHeliocentric distanceAUpos.distancefloatHRVHeliocentric radial velocitykm/sphys.veloc;pos.heliocentricfloatinv1OH maser inversion (model of Despois et al., Despois et al., 1981A&A....99..320D (G1)stat.paramfloatinv2OH maser inversion (model of Schleicher & A'Hearn, 1988ApJ...331.1058S) (G1)stat.paramfloatTbgBackground brightness temperatureKinstr.skyTempfloatareaLine areamJy.km/sspect.line.intensityinte_arearms error on line areamJy.km/sstat.errorintS? Line maximum intensitymJyphot.flux.density;em.radio.1500-3000MHzintnullableVo? Line central velocitykm/sspect.dopplerVeloc;spect.linefloatnullablee_Vo? rms error on line central velocitykm/sstat.errorfloatnullabledVo? Line width at half maximumkm/sspect.line.widthfloatnullablee_dVo? rms error on line width at half maximumkm/sstat.errorfloatnullableoRAOffset in right ascensionarcminpos.eq.ra;arith.difffloatoDEOffset in declinationarcminpos.eq.dec;arith.difffloatFigFigure number (in electronic version of the paper)meta.bib.figcharSpFileSpectrum file name in sub-directory spectra (G2)meta.id;meta.filechar