J/ApJS/259/56ivo://CDS.VizieR/J/ApJS/259/56doi:10.26093/cds/vizier.22590056CDSQiu J.-J.Zhang Y.Zhang J.-S.Nakashima J.-I.2022-08-26T08:05:20Z2022-07-19T08:54:57ZCDS support team

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

cds-question@unistra.frplanetary-nebulaeradio-spectroscopyWe present observations of the carbon-rich protoplanetary nebula CRL2688 made with the Institut de Radioastronomie Millimetrique 30m telescope in the 3 and 2mm bands. In total, 196 transition lines belonging to 38 molecular species and isotopologues are detected, among which, to the best of our knowledge, 153 transition lines and 13 species are the first reported for this object. Additionally, in order to contribute to future research, we have collected observational data on the molecular lines of CRL 2688 from the literature and compiled them into a single unified catalog. We find that the molecular abundance of CRL 2688 cannot be explained by the standard model of a circumstellar envelope. The implications of metal-bearing molecules on circumstellar chemistry are discussed.2022ApJS..259...56Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/259/56CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 1991-2022)VI/139 : Herschel Observation Log (Herschel Science Centre, 2013)J/A+A/299/755 : Stellar evolution. II. Post-AGB (Bloecker+, 1995)J/A+A/432/369 : Leiden Atomic and Molecular Database (LAMDA) (Schoeier+, 2005)J/ApJ/661/250 : Molecular line survey of CRL 618 (Pardo+, 2007)J/ApJS/177/275 : 1.3 and 2mm survey of IRC+10216 (He+, 2008)J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)J/ApJ/709/1042 : Variability in C-rich proto-PNe. (Hrivnak+, 2010)J/ApJS/193/17 : Spectral-line survey of IRC+10216 at 293-355GHz (Patel+, 2011)J/A+A/574/A56 : IRC +10216 17.8GHz-26.3GHz spectrum (Gong+, 2015)J/A+A/606/A74 : IRC +10216 13.3GHz-18.5GHz spectrum (Zhang+, 2017)J/A+A/633/A120 : SgrB2(M) ^13^CCC and C^13^CC spectra (Giesen +, 2020)J/A+A/634/A125 : NGC 1068 nucleus molecular line spectra at 2mm (Qiu+, 2020)J/AJ/162/191 : 2011-2021 calibrator observations of SCUBA-2 (Mairs+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/259/56https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/259/56http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/259/56https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/259/56https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/259/56http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/259/56GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapMillimeterdefaultJ/ApJS/259/56/fig1The full spectra of CRL 2688 obtained in current observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreq[75.7/184.3] Rest frequencyGHzem.freqdoubleTmb[-0.25/11.8] Main beam temperature (1)Kphys.temperaturedouble