J/A+A/319/235ivo://CDS.VizieR/J/A+A/319/235doi:10.26093/cds/vizier.33190235CDSBachiller R.Fuente A.Bujarrabal V.Colomer F.Loup C.,Omont A.de Jong T.2013-02-27T06:33:01Z1997-12-09T17:52:19ZCDS support team

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

cds-question@unistra.frgiant-starschemical-abundancesWe list in Table 1 the observed stars together with some of their characteristics. Distances, expansion velocities, mass loss rates, and spectral types are taken from the compilations of Bujarrabal et al. (1994) <J/A+A/285/247> and Loup et al. (1993A&AS...99..291). The sample includes C-rich and O-rich objects, some S-stars, a few proto-PN, and a young PN (NGC7027). See paper for more details. In Table 2, we give some of the observational parameters. A_low_ and A_high_ refer to the integrated intensity of the low-frequency and high-frequency fine-structure groups. The intrinsic intensity ratios, R=A_high_/A_low_, are R(1-0)=2 and R(2-1)=1.8. In principle, the observation of several components with different intrinsic strengths allows an estimate of the line optical depth, and the value of R gives an estimate of the envelope thickness.1997A&A...319..235Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/319/235CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/319/235https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/319/235http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/319/235https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/319/235https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/319/235http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/319/235GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/319/235/table1 (Circumstellar envelopes observed in the CN lines)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/319/235/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/319/235/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/319/235/table1?GETtext/xml+votable180.050000true18.43476762.9599310.0055555555555555566/1238 1986 3255 3359 3459 3716 3735 4365 5273 6714 7531 9783 10103 10960 11928 13297 13677 13995 14457 14674 14738 15401 16233 18364 20022 21523 22239 22425 22941 23470 23611 24501 25228 26319 29877 29886 30212 30244 30664 32062 39905 40150https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/319/235?format=asciiOpticaldefaultJ/A+A/319/235/table1Circumstellar envelopes observed in the CN linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[CO ] C: C-rich object, O: O-rich object, blank: Other objectssrc.classcharNameStar namemeta.id;meta.maincharRA1950Right ascension (1950.0)pos.eq.ra;meta.mainDE1950Declination (1950.0)pos.eq.dec;meta.mainDistDistancekpcpos.distanceintExpVExpansion velocitykm/sphys.veloc.expansionfloatDMassMass loss ratesolMass/yrphys.mass.lossintn_DMass[a] Note on mass loss rate (1)meta.notecharCommentSpectral type and commentssrc.spTypechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/A+A/319/235/table2CN observational resultsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[CO ] C: C-rich object, O: O-rich object, blank: Other objectssrc.classcharNameSource namemeta.id;meta.maincharl_Tpeak1[~] Limit flag on Tpeak1meta.code.errorcharTpeak1? Peak temperature (N=1->0)Kphys.temperaturefloatnullableAhigh1? Integrated intensity of the high-frequency fine-structure groups (N=1->0)K.km/sphot.flux.density;em.radiofloatnullablen_Ahigh1[b] Note on Ahigh1 (1)meta.notecharAlow1? Integrated intensity of the low-frequency fine-structure groups (N=1->0)K.km/sphot.flux.density;em.radiofloatnullableR1->0? Intensity ratio Ahigh1/Alow1 (N=1->0) (3)spect.line.intensity;arith.ratiofloatnullablee_Tpeak1? rms uncertainty on Tpeak1 (N=1->0)mKstat.errorintnullablen_e_Tpeak1[a] Note on e_Tpeak1 (2)meta.notecharTpeak2? Peak temperature (N=2->1)Kphys.temperaturefloatnullableAhigh2? Integrated intensity of the high-frequency fine-structure groups (N=2->1)K.km/sphot.flux.density;em.radiofloatnullableAlow2? Integrated intensity of the low-frequency fine-structure groups (N=2->1)K.km/sphot.flux.density;em.radiofloatnullableR2->1? Intensity ratio Ahigh2/Alow2 (N=2->1) (3)spect.line.intensity;arith.ratiofloatnullablee_Tpeak2? rms uncertainty on Tpeak2 (N=2->1)mKstat.errorintnullable