J/A+A/710/A298ivo://CDS.VizieR/J/A+A/710/A298CDSMulato L.Merc J.Charbonnel S.Garde O.Le Du P.Petit T.2026-06-19T11:48:22Z2026-06-19T12:45:37ZCDS support team

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

cds-question@unistra.frplanetary-nebulaenovaecataclysmic-variable-starsemission-line-starsbe-starsvisible-astronomyspectroscopyThe Gaia DR3, released in June 2022, included low-resolution BP/RP (XP) spectra that have been exploited for the classification of various types of emission-line objects using machine-learning techniques. The Gaia Extended Stellar Parametrizer for Emission-Line Stars (ESP-ELS) algorithm identified 273 sources as potential planetary nebulae (PNe). We aim to analyze the PN sample produced by the ESP-ELS algorithm to investigate the true nature of the objects classified as PNe. We extracted all sources from the Gaia catalog classified as PNe by the ESP-ELS algorithm and filtered out 200 objects with secure classifications available in the literature. Of these, ~65% correspond to known Galactic or Magellanic compact PNe, and ~20% to D- or D'-type symbiotic systems. The XP spectra of the remaining sources were visually inspected, leading to a subset of 14 promising candidates showing strong emission features attributable to Halpha and [OIII]lambda5007. Although typical of PNe, such features are also consistent with D- or D'-type symbiotics, known to mimic compact PNe. We obtained spectroscopic follow-up observations for these objects with the 2SPOT facilities in Chile and France, complemented by an analysis of archival photometric data to further constrain their nature. We report the identification of nine bona-fide or likely D- or D'-type symbiotic systems, one planetary nebula in the LMC, one polar cataclysmic variable, and three possible Be stars in (or in the direction of) the SMC, within our sample of 14 objects.2026A&A...710A.298Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/710/A298CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/710/A298https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/710/A298http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/710/A298https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/710/A298https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/710/A298http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/710/A298GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/710/A298/table1 (List of objects of interest selected from the Gaia DR3 PN candidate sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/710/A298/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/710/A298/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/710/A298/table1?GETtext/xml+votable180.050000true7.5913333-73.67371390.0055555555555555566/13119 13233 15372 15568 29862 31045-31046 33077 33295 33313 33317 37930 37933 38053https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/710/A298?format=asciiOpticaldefaultJ/A+A/710/A298/table1List of objects of interest selected from the Gaia DR3 PN candidate samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintNameName (1)meta.id;meta.maincharGaiaDR3Gaia DR3 identifiermeta.idRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainGmagG magnitudemagphot.mag;em.optfloatpEWHaH{alpha} pseudo-equivalent widthnmspect.line.eqWidthfloatTypeType (2)src.classcharspShow the spectrummeta.ref.urlcharFileNameName of the fits spectrum file in subdirectory spmeta.id;meta.fitschar