J/A+A/343/841ivo://CDS.VizieR/J/A+A/343/841doi:10.26093/cds/vizier.33430841CDSCorradi R.L.M.Brandi E.Ferrer O.E.Schwarz H.E.1999-04-07T17:32:30Z1999-04-07T17:32:25ZCDS support team

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

cds-question@unistra.frspectrophotometryvariable-starsNarrowband images of 51 symbiotic stars were obtained at the ESO and ORM observatories to search for resolved optical nebulae. Ionized nebulae much larger than previously known are found around CH Cyg, HM Sge and V1016 Cyg, and they will be discussed in detail in forthcoming papers. A nebula with a deconvolved size between 0.9" and 1.5" is found around the symbiotic Mira H 1-36. The radio sources located few arcminutes aside of R Aqr (Hollis et al., 1987ApJ...321L..55H), which were suggested to be the remnant of a prehistoric eruption of the system, are found to be background galaxies. We also present a bibliographical compilation, updated to October 1998, of all the extended nebulae around symbiotic stars detected at optical and radio wavelengths, as well as a list of optical non-detections. The statistics of occurrence of these large ionized nebulae among symbiotic stars is discussed. Extended ionized nebulae appear to be a common component of the D-type symbiotics, and we infer that they are formed by the Mira wind and/or high velocity winds ejected by the hot component during outbursts. On the contrary, very few nebulae are detected around the systems containing normal red giants.1999A&A...343..841Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/343/841CatalogResearchIsServedByTAP VizieR generic servicerelated-toIII/174 : Atlas of line profiles of symbiotic stars (VanWinckel+, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/343/841https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/343/841http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/343/841https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/343/841https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/343/841http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/343/841GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/343/841/table5Optical non-detectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintName1First name of the objectmeta.id;meta.maincharName2Second name (only when existing)meta.idcharIRTypeSymbiotic IR typesrc.classcharTelTelescope (1)meta.id;instr.telcharFilterFilter (2)meta.code;instr.filtercharExpTimeExposure time (3)stime.duration;obs.exposurecharSeeSeeingarcsecinstr.obsty.seeingcharNotesNotes (4)meta.notechar