J/A+A/614/A135ivo://CDS.VizieR/J/A+A/614/A135doi:10.26093/cds/vizier.36140135CDSWeidmann W.Gamen R.Mast D.Farina C.Gimeno G.Schmidt E.O.,Ashley R.P.Peralta de Arriba L.Sowicka P.Ordonez-Etxeberria I.2018-11-09T18:14:05Z2018-07-03T06:40:48ZCDS support team

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

cds-question@unistra.frsurveysplanetary-nebulaepopulation-ii-starsThere are more than 3000 known Galactic planetary nebulae (PNe), but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types. It is vital to increase this number in order to have reliable statistics, which will lead to an increase of our understanding of these amazing objects. We aim to contribute to the knowledge of central stars of planetary nebulae and stellar evolution. This observational study is based on Gemini Multi-Object Spectrographs (GMOS) and with the Intermediate Dispersion Spectrograph (IDS) at the Isaac Newton Telescope (INT) spectra of 78 CSPN. The objects were selected because they did not have any previous classification, or the present classification is ambiguous. These new high quality spectra allowed us to identify the key stellar lines for determining spectral classification in the Morgan-Keenan (MK) system. We have acquired optical spectra of a large sample of CSPN. From the observed targets, 50 are classified here for the first time while for 28 the existing classifications have been improved. In seven objects we have identified a P-Cygni profile at the HeI lines. Six of these CSPN are late O-type. The vast majority of the stars in the sample exhibit an absorption-type spectrum, and in one case we have found wide emission lines typical of [WR] stars. We give a complementary, and preliminary, classification criterion to obtain the sub-type of the O(H)-type CSPN. Finally, we give a more realistic value of the proportion of CSPN that are rich or poor in hydrogen.2018A&A...614A.135Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/614/A135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/84 : Strasbourg-ESO Catalogue of Galactic Planetary NebulaeJ/A+A/526/A6 : Central stars of planetary nebulae (Weidmann+, 2011)J/A+A/531/A172 : Central stars of planetary nebulae. II. (Weidmann+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/614/A135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/614/A135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/614/A135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/614/A135https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/614/A135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/614/A135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/614/A135/tablea3 (Spectral types from our observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/614/A135/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/614/A135/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/614/A135/tablea3?GETtext/xml+votable180.050000true144.7878333-2.80888890.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/614/A1356/1223 6015 10049 12960 12981 13796 14338 14450 14922 15105 15145 22166 22234 23889 24361 27192 28713 28718 28721-28722 28730-28731 28777 28779 28783 28820 28823 28866 28870 28885 28910 28958 28977 29032 29037 29147 29160 29476 30327 30329 30435 30498 30504 30518 32001 32021 32080 32109 37110 37337 37354 38002 38449 39278 39702 39935 40114 40651 41213 41336 41434 41449 41596 41648 41831 41892 41912 41940 42005 42099 42160 42354 42366 42505 42835 43787https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/614/A135?format=asciidefaultJ/A+A/614/A135/tablea3Spectral types from our observationsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintNameMain designationmeta.id;meta.maincharPNGPNG name (based on galactic position)meta.idcharSpTypeSpectral type of central star (1)src.spTypecharTel[GI] Telescope (G: GEMINI/GMOS, I: INT/IDS)meta.notecharHeII4542[AE-? ] HeII at 4542{AA} detection flag (2)meta.codecharHeII4686[AE-?+ N/D] HeII at 4686{AA} detection flag (2)meta.codecharHeII5412[AE-? N/D] HeII at 5412{AA} detection flag (2)meta.codecharHeI4471[AE-? ] HeI at 4471{AA} detection flag (2)meta.codecharHb4861[AE-? ] H{beta} detection flag (2)meta.codecharNV4603[AE-? ] NV at 4603-4619{AA} detection flag (2)meta.codecharCIV5806[AE-?+ N/D] CIV at 5801-5812{AA} detection flag (2)meta.codecharNS[y/n] Indicates whether or not it was possible to subtract the nebular component.meta.codecharspShow the spectrummeta.ref.urlcharFileNameName of the spectrum file in subdirectory fitsmeta.id;meta.filecharFileName2Name of second spectrum file in subdirectory fitsmeta.id;meta.filechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main