J/MNRAS/436/718ivo://CDS.VizieR/J/MNRAS/436/718doi:10.26093/cds/vizier.74360718CDSYuan H.B.Liu X.W.2024-08-07T20:12:09Z2015-09-30T14:04:38ZCDS support team

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

cds-question@unistra.frplanetary-nebulaespectroscopyredshiftedUsing ~1700000 target- and sky-fibre spectra from the Sloan Digital Sky Survey (SDSS), we have carried out a systematic search for Galactic planetary nebulae (PNe) via detections of the [OIII] {lambda}{lambda}4959, 5007 lines. Thanks to the excellent sensitivity of the SDSS spectroscopic surveys, this is by far the deepest search for PNe ever taken, reaching a surface brightness of the [OIII] {lambda}5007 line down to about 29.0mag/arcsec^2^. The search leads to the recovery of 13 previously known PNe in the Northern and Southern Galactic Caps. In total, 44 new PN candidates are identified, including seven candidates of multiple detections and 37 candidates of single detection. The seven candidates of multiple detections are all extremely large (between 21 and 154arcmin) and faint, located mostly in the low Galactic latitude region and with a kinematics similar to disc stars. After checking their images in H{alpha} and other bands, three of them are probably HII regions, one is probably associated with a new supernova remnant, another one is possibly a true PN and the remaining two could be either PNe or supernova remnants. Based on sky positions and kinematics, seven candidates of single detection probably belong to the halo population. If confirmed, they will increase the number of known PNe in the Galactic halo significantly. All the newly identified PN candidates are very faint, with a surface brightness of the [OIII] {lambda}5007 line between 27.0-30.0mag/arcsec^2^, and very challenging to be discovered with previously employed techniques (e.g. slitless spectroscopy, narrow-band imaging), and thus may greatly increase the number of `missing' faint PNe. Our results demonstrate the power of large-scale fibre spectroscopy in hunting for ultrafaint PNe and other types of emission line nebulae. Combining the large spectral data bases provided by the SDSS and other on-going projects (e.g. the LAMOST Galactic surveys), it is possible to build a statistically meaningful sample of ultrafaint, large, evolved PNe, thus, improving the census of Galactic PNe.2013MNRAS.436..718Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/436/718CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)V/127 : MASH Catalogues of Planetary Nebulae (Parker+ 2006-2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/436/718https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/436/718http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/436/718https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/436/718https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/436/718http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/436/718GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/436/718/table1 (List of SDSS targets whose spectra show detectable [OIII]{lambda}{lambda}4959, 5007 emission from Galactic PNe, HII regions and PN candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/436/718/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/436/718/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/436/718/table1?GETtext/xml+votable180.050000true242.9149612.047090.0055555555555555566/1014 2180 2600 2688 2852 4244 4370 4376 4746-4747 4752 4769 4772 4774 4953 5027 5591 5663 5996 6400 6654 6740 7392 8368 8934 9233 9236 9276 9369 9528 9738 10319 10378 10600 10731 10733 11178 11247 11309 11328 11373 12942 12964 14573 14584-14586 15351 15796 15798 15818 17750 17840 18019 19410 19610 19741 22362 23416 26999 27048-27049 27051-27052 28036 28126 28291 29780 31333 31376 31670 31882https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/436/718?format=asciidefaultJ/MNRAS/436/718/table1aList of Recovered PNe and HII regions and PN candidates of multiple detectionsSimbadNameSimbad column added by the CDSmeta.idcharCat[AB] Category (G1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of PNe or HII regionmeta.id;obs.fieldcharONameOther namemeta.id;meta.maincharRadA[2/970]? Angular size for "Recovered PNe and HII regions" in arcsec (Category A)arcsecphys.angSizefloatnullablel_RadB[>=] Limit flag on RadBmeta.code.errorcharRadB[21/154]? Angular size for "PN candidates of multiple detections" in arcmin (Category B)arcminphys.angSizeintnullableRV[-141/41]? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullableJ/MNRAS/436/718/table1List of SDSS targets whose spectra show detectable [OIII]{lambda}{lambda}4959, 5007 emission from Galactic PNe, HII regions and PN candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCat[ABC] Category of source (G1)meta.codecharNameName of PNe or HII region, as in table1ameta.id;obs.fieldcharSeq[1/160] Sequential number of SDSS targetmeta.recordintprimaryn_Seq[deg] Note on the source (2)meta.notecharMJD[51690/54632] SSDS spectrum ID: MJDdmeta.id;time.epochintPlateSSDS spectrum ID: Plate numbermeta.id;instr.plateintFiberSSDS spectrum ID: Fiber numbermeta.id;meta.mainintTypeInitial type in SDSS (3)src.classcharz[-0.002/4.246]? Redshiftsrc.redshiftdoublenullableRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleS5007[18.1/30.1] Line [OIII]{lambda}5007 surface brightness (4)mag.arcsec**-2phot.mag.sbfloatn_S5007[f] S5007 from [OIII]{lambda}4959 line (5)meta.notecharRV[-185/148] Radial velocitykm/sphys.veloc;pos.heliocentricfloatn_RV[f] RV from [OIII]{lambda}4959 line (5)meta.notecharSpInteractive spectrum from SDSSmeta.ref.urlchar