J/A+A/548/A16ivo://CDS.VizieR/J/A+A/548/A16doi:10.26093/cds/vizier.35480016CDSHowarth I.D.2025-08-05T11:39:18Z2012-11-14T09:24:04ZCDS support team

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

cds-question@unistra.frastrometryastronomical-object-identificationemission-line-starsAccurate astrometry is required to reliably cross-match 20th-century catalogues against 21st-century surveys. The present work aims to provide such astrometry for the 625 entries of the Bohannan & Epps (BE74; 1974A&AS...18...47B) catalogue of H{alpha} emission-line stars. BE74 targets have been individually identified in digital images and, in most cases, unambiguously matched to entries in the UCAC4 (I/322) astrometric catalogue.2012A&A...548A..16Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/548/A16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/322 : UCAC4 Catalogue (Zacharias+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/548/A16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/548/A16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/548/A16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/548/A16https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/548/A16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/548/A16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/548/A16/table1 (*Astrometry for BE74 targets (corrected for small zero-point offsets as described in the text))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/548/A16/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/548/A16/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/548/A16/table1?GETtext/xml+votable180.050000true73.540625-66.93413890.0055555555555555565/8263 8269 8274-8275 8280 6/33046-33047 33049 33051 33073 33075 33088 33090-33092 33094-33095 33106-33107 33112-33114 33124 331268.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/548/A16?format=asciidefaultJ/A+A/548/A16/table1*Astrometry for BE74 targets (corrected for small zero-point offsets as described in the text)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMmeta.ref.urlchar[BE74]Sequential numbermeta.id;meta.mainintprimarym_[BE74]Multiplicity index on [BE74] (? when no positions measured)meta.code.multipcharRAJ2000? Measured right ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000? Measured declination (J2000)pos.eq.dec;meta.mainnullableRA4? Matching UCAC4 right ascension (J2000)pos.eq.ranullableDE4? Matching UCAC4 declination (J2000)pos.eq.decnullableSimbadSimbad column added by the CDSmeta.ref.urlcharH[0/9]? Hipparcos/Tycho flag (15)meta.codeintnullableUCAC4UCAC4 designation (ZZZ-NNNNNN)meta.idcharePos? Total mean error on position at Ep=J2000 (3)masstat.error;posintnullablef.mag? UCAC4 fit model magnitude (579-642nm) (4)magphot.mag;em.opt.Rfloatnullableof[0/9]? UCAC4 object classification flag (6)meta.codeintnullabledb[0/36]? UCAC4 double star flag (7)meta.codeintnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableKmag? 2MASS Ks magnitudemagphot.mag;em.IR.KfloatnullableBmag? B magnitude from APASS (12)magphot.mag;em.opt.BfloatnullableVmag? V magnitude from APASS (12)magphot.mag;em.opt.Vfloatnullablermag? r magnitude from APASS (12)magphot.mag;em.opt.RfloatnullableNoteNotemeta.notecharJ/A+A/548/A16/table2Notes on individual objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[BE74]Sequential numbermeta.id;meta.mainintNotesNotes (1)meta.notecharJ/A+A/548/A16/table3Positional matches between measured BE74 co-ordinates and Skiff's results for HDE, Sk, and LHA 120-S targets, within a 5 arcsec radiusSkSk matchmeta.idcharoffSk? Sk match offsetarcsecpos;arith.difffloatnullableLHALHA12-S matchmeta.idcharoffLHA? LHA12-S match offsetarcsecpos;arith.difffloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[BE74]BE74 number (use in conjunction with Table 1)meta.id;meta.mainintn_[BE74]Multiplicity index on [BE74]meta.notecharHDEHDE matchmeta.notecharoffHDE? HDE match offsetarcsecpos;arith.difffloatnullable