I/339ivo://CDS.VizieR/I/339CDSAltmann M.Roeser S.Demleitner M.Bastian U.Schilbach E.2024-07-15T12:17:02Z2017-04-12T15:57:02ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyastrometryproper-motionsphotometryRecently, the first installment of data from ESA's Gaia astrometric satellite mission (Gaia DR1) was released, containing positions of more than 1 billion stars with unprecedented precision, as well as proper motions and parallaxes, however only for a subset of 2 million objects. The second release will include those quantities for most objects. In order to provide a dataset that bridges the time gap between the Gaia DR1 and Gaia DR2 releases and partly remedies the lack of proper motions in the former, HSOY ("Hot Stuff for One Year") was created as a hybrid catalog between Gaia and ground-based astrometry, featuring proper motions (but no parallaxes) for a large fraction of the DR1 objects. While not attempting to compete with future Gaia releases in terms of data quality or number of objects, the aim of HSOY is to provide improved proper motions partly based on Gaia data, allowing studies to be carried out just now or as pilot studies for later projects requiring higher-precision data. The HSOY catalog was compiled using the positions taken from Gaia DR1 combined with the input data from the PPMXL catalog, employing the same weighted least-squares technique that was used to assemble the PPMXL catalog itself. This effect resulted in a four-parameter astrometric catalog containing 583 million stars, with Gaia DR1 quality positions and proper motions with precisions from far less than 1 mas/yr to 5 mas/yr, depending on object brightness and location on the sky.2017A&A...600L...4Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/I/339CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/317 : The PPMXL Catalog (Roeser+ 2010)I/337 : Gaia DR1 (Gaia Collaboration, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/339https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/339http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/339https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/339https://vizier.iucaa.in/viz-bin/votable?-source=I/339http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/339GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/339/hsoy (The HSOY catalogue (583001653 sources))https://vizier.cds.unistra.fr/viz-bin/conesearch/I/339/hsoy?https://vizier.iucaa.in/viz-bin/conesearch/I/339/hsoy?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/339/hsoy?GETtext/xml+votable180.050000true44.99608833020.00563874850.005555555555555556Hips catalogue for table I/339/hsoyhttps://hipscat.cds.unistra.fr/HiPSCatService/I/339/hsoy0/0-11 6/1.1166583743361574e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/I/339?format=asciidefaultI/339/hsoyThe HSOY catalogue (583001653 sources)RAJ2000Right ascension, J2000.0, at epoch 2000 (raj2000)degpos.eq.ra;meta.mainDEJ2000Declination, J2000.0, at epoch 2000 (dej2000)degpos.eq.dec;meta.mainipixPPMXL object identifier (ipix) (1)meta.id;meta.mainindexedcomp[0/4] Disambiguation counter (where multiple DR1 objects match one PPMXL object) (comp) (1)meta.code.multipinte_RAJ2000Mean error: RA*cos(DE) at mean epoch EpRA (e_ra)masstat.error;pos.eq.rafloate_DEJ2000Mean error: DE at mean epoch EpDE (e_de)masstat.error;pos.eq.decfloatpmRAProper motion in RA, pmRA*cos(DE) (pmra)mas/yrpos.pm;pos.eq.radoublepmDEProper motion in DE (pmde)mas/yrpos.pm;pos.eq.decdoublee_pmRAMean error in pmRA (e_pmra)mas/yrstat.error;pos.pm;pos.eq.rafloate_pmDEMean error in pmDE (e_pmde)mas/yrstat.error;pos.pm;pos.eq.decfloatEpRAMean Epoch in right ascension (epra)yrtime.epoch;pos.eq.rafloatEpDEMean Epoch in declination (epde)yrtime.epoch;pos.eq.decfloatJmag? 2MASS J magnitude (jmag)magphot.mag;em.IR.Jfloatnullablee_Jmag? error of 2MASS Jmag (e_jmag)magstat.error;phot.magfloatnullableHmag? 2MASS H magnitude (hmag)magphot.mag;em.IR.Hfloatnullablee_Hmag? error of 2MASS Hmag (e_hmag)magstat.error;phot.magfloatnullableKmag? 2MASS K magnitude (kmag)magphot.mag;em.IR.Kfloatnullablee_Kmag? error of 2MASS Kmag (e_kmag)magstat.error;phot.magfloatnullableB1mag? USNO-B, 1st epoch B magnitude (b1mag)magphot.mag;em.opt.BfloatnullableB2mag? USNO-B, 2nd epoch B magnitude (b2mag)magphot.mag;em.opt.BfloatnullableR1mag? USNO-B, 1st epoch R magnitude (r1mag)magphot.mag;em.opt.RfloatnullableR2mag? USNO-B, 2nd epoch R magnitude (r2mag)magphot.mag;em.opt.RfloatnullableImag? USNO-B I magnitude (imag)magphot.mag;em.opt.IfloatnullableSurveys? Origin of USNO-B magnitudes (surveys) (2)meta.bibintnullableNobs? Total number of astrometric observations (n_PPMXL+1) (nobs)meta.numberintnullableGaiaIdGaia unique source identifier (gaia-id)meta.idindexedGmag? Mean Gaia G-band magnitude (Gmag)magphot.mag;em.optfloatnullableindexede_Gmag? estimated error of Gaia Gmag (e_Gmag)magstat.error;phot.magfloatnullableClone[1]? 1 if more than one PPMXL match to this Gaia object (clone)meta.codeintnullableNosc[1]? 1 if object not in SuperCOSMOS within 3" (no_sc)meta.noteintnullable