J/A+A/642/A71ivo://CDS.VizieR/J/A+A/642/A71doi:10.26093/cds/vizier.36420071CDSHajduk M.2021-09-08T12:13:12Z2020-10-06T08:20:07ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsplanetary-nebulaewhite-dwarf-starsstellar-evolutionary-modelsspectroscopyWe obtained new spectra of fourteen Magellanic Cloud planetary nebulae with the South African Large Telescope to determine heating rates of their central stars and to verify evolutionary models of post asymptotic giant branch stars. We compared new spectra with observations made in previous years. Five planetary nebulae showed an increase of the excitation with time. Four of their central stars exhibit [WC] features in their spectra, including three new detections. This raises the total number of [WC] central stars of PNe in the Magellanic Clouds to ten. We compared determined heating rates of the four [WC] central stars with the He burning post asymptotic giant branch evolutionary tracks and the remaining star with the H-burning tracks. Determined heating rates are consistent with the evolutionary models for both H and He-burning post asymptotic giant branch stars. The central stars of the PNe which show the fastest increase of excitation are also the most luminous in the sample. This indicates that [WC] central stars in the Magellanic Clouds evolve faster than H-burning central stars and originate from more massive progenitors.2020A&A...642A..71Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A71CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A71https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/642/A71/list (List of fits spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A71/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A71/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A71/list?GETtext/xml+votable180.050000true79.25275-69.32513890.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/642/A716/33052 33096-33098 33101 33103 33120-33121 33173 33293 33297 33313 33317https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/642/A71?format=asciidefaultJ/A+A/642/A71/listList of fits spectraNameNamemeta.id;meta.maincharspShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Simbad Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of spectrameta.numberintObs.dateObservation datetime.epoch;obsnullableblambdaLower value of wavelength interval0.1nmem.wlfloatBlambdaUpper value of wavelength interval0.1nmem.wlfloatdlambdaWavelength resolution0.1nmspect.resolutiondoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitscharAssocDataAssociated Data web pagemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar