J/MNRAS/505/5164ivo://CDS.VizieR/J/MNRAS/505/5164doi:10.26093/cds/vizier.75055164CDSSzilagyi M.Kun M.Abraham P.2024-08-21T20:17:58Z2021-07-07T15:39:34ZCDS support team

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

cds-question@unistra.frvisible-astronomytrigonometric-parallaxproper-motionspre-main-sequence-starsyoung-stellar-objectsWe present a new census of candidate pre-main-sequence stars in the Cepheus flare star-forming region, based on Gaia EDR3 parallaxes, proper motions, and colour-magnitude diagrams. We identified new candidate members of the previously known young stellar groups associated with NGC 7023, L1177, L1217/L1219, L1228, L1235, and L1251. We studied the 3D structure of the star-forming complex and the distribution of tangential velocities of the young stars. The young stellar groups are located between 330 and 368pc from the Sun, divided into three kinematic subgroups, and have ages between 1 and 5 million yr. The results confirm the scenario of propagating star formation, suggested by previous studies. In addition to the bulk pre-main-sequence star population between 330 and 370pc, there is a scattered and more evolved pre-main-sequence population around 150-180pc. We found new candidate members of the nearby Cepheus Association, and identified a new moving group of 46, 15-20 million yr old pre-main-sequence stars located at a distance of 178pc, around the A0-type star HD 190833. A few pre-main-sequence stars are located at 800-900 pc, indicative of star-forming regions associated with the Galactic local arm above the Galactic latitude of +10{deg}.2021MNRAS.505.5164Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/505/5164CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)II/328 : AllWISE Data Release (Cutri+ 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/505/5164https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/505/5164http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/505/5164https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/505/5164https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/505/5164http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/505/5164GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/505/5164/tablea1 (Known YSOs of the Cepheus Flare observed by Gaia)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/5164/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/5164/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/5164/tablea1?GETtext/xml+votable180.050000true0.141378699278779.67674545161830.005555555555555556Cone search capability for table J/MNRAS/505/5164/tablea2a (Members of the Cepheus Association and HD 190833 group identified based on Gaia data (close groups))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/5164/tablea2a?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/5164/tablea2a?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/5164/tablea2a?GETtext/xml+votable180.050000true0.141378699278779.67674545161830.005555555555555556Cone search capability for table J/MNRAS/505/5164/tablea2b (Members of molecular clouds identified based on Gaia data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/5164/tablea2b?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/5164/tablea2b?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/5164/tablea2b?GETtext/xml+votable180.050000true309.048674613270167.95260817703220.005555555555555556Cone search capability for table J/MNRAS/505/5164/tablea3 (Candidate Class II YSOs classified with AllWISE/2MASS data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/505/5164/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/505/5164/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/505/5164/tablea3?GETtext/xml+votable180.050000true303.691291769.70152780.0055555555555555565/1003 3962 3998-3999 4032-4033 4047 4052 4054-4055 6/3838 4009-4011 4027 15679 15732 15759 15781 15789-15791 15797-15799 15802-15803 15819 15840 15842-15843 15854-15855 15857-15858 15862 15864 15866 15870-15871 15959 15961 15964-15965 15967 15982 15986 15990 16080 16084-16085 16136 16144 16161 16165 16167-16169 16171-16172 16174-16176 16178 16180 16182 16185 16192-16193 16196-16198 16207 16213-16215 16225-16226 16230-16231 16233-16234 16239 16241-16242 16253 16257 16259 16278 163201.1166583743361574e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/505/5164?format=asciiOpticaldefaultJ/MNRAS/505/5164/tablea1Known YSOs of the Cepheus Flare observed by GaiaNameStar identifiermeta.id;meta.maincharPlxParallaxmaspos.parallaxdoublee_PlxError of the parallaxmasstat.error;pos.parallaxdoublergeoDistance from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleb_rgeo16th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleB_rgeo84th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleRUWERenormalized unit-weight errormeta.code.qualdouble_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 source idmeta.id2MASS2MASS identifiermeta.idcharRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.radoublepmDEProper motion in declinationmas/yrpos.pm;pos.eq.decdoubleJ/MNRAS/505/5164/tablea2aMembers of the Cepheus Association and HD 190833 group identified based on Gaia data (close groups)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoublergeoDistance from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleb_rgeo16th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleB_rgeo84th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoublePlxParallaxmaspos.parallaxdoublee_PlxError of the parallaxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.radoublee_pmRAError of the proper motion in right ascensionmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEError of the proper motion in declinationmas/yrstat.error;pos.pm;pos.eq.decdoubleCloudGroup or cloud identifier (1)meta.idcharNameStar identifiermeta.id;meta.maincharGaiaEDR3Gaia EDR3 identifiermeta.idchar2MASS2MASS identifiermeta.idchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharvLTangential velocity in galactic longitudekm/sphys.velocdoublevBTangential velocity in galactic latitudekm/sphys.velocdoubleGmagGaia magnitude in G bandmagphot.mag;em.optfloatBPmag? Gaia magnitude in G_BP_ bandmagphot.mag;em.opt.BfloatnullableRPmag? Gaia magnitude in G_RP_ bandmagphot.mag;em.opt.RfloatnullableJmag? Gaia magnitude in 2MASS J bandmagphot.mag;em.IR.JfloatnullableHmag? Gaia magnitude in 2MASS H bandmagphot.mag;em.IR.HfloatnullableKmag? Gaia magnitude in 2MASS K bandmagphot.mag;em.IR.KfloatnullableRUWERenormalized unit-weight errormeta.code.qualdoubleJ/MNRAS/505/5164/tablea2bMembers of molecular clouds identified based on Gaia datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoublergeoDistance from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleb_rgeo16th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoubleB_rgeo84th percentile of distance posterior from Bailer-Jones et al. (2021, Cat. I/352)pcpos.distancedoublePlxParallaxmaspos.parallaxdoublee_PlxError of the parallaxmasstat.error;pos.parallaxdoublepmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.radoublee_pmRAError of the proper motion in right ascensionmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion in declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEError of the proper motion in declinationmas/yrstat.error;pos.pm;pos.eq.decdoublevLTangential velocity in galactic longitudekm/sphys.velocdoublevBTangential velocity in galactic latitudekm/sphys.velocdoubleGmagGaia magnitude in G bandmagphot.mag;em.optfloatBPmag? Gaia magnitude in G_BP_ bandmagphot.mag;em.opt.BfloatnullableRPmag? Gaia magnitude in G_RP_ bandmagphot.mag;em.opt.RfloatnullableJmag? Gaia magnitude in 2MASS J bandmagphot.mag;em.IR.JfloatnullableHmag? Gaia magnitude in 2MASS H bandmagphot.mag;em.IR.HfloatnullableKmag? Gaia magnitude in 2MASS K bandmagphot.mag;em.IR.KfloatnullableRUWERenormalized unit-weight errormeta.code.qualdoubleCloudGroup or cloud identifier (1)meta.idcharNameStar identifiermeta.id;meta.maincharGaiaEDR3Gaia EDR3 identifiermeta.idchar2MASS2MASS identifiermeta.idchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/505/5164/tablea3Candidate Class II YSOs classified with AllWISE/2MASS datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifiermeta.id;meta.maincharALLWISEAllWISE identifiermeta.idcharTypeYSO typesrc.classchar_RAFrom AllWISE name (right ascension part)degpos.eq.ra;meta.main_DEFrom AllWISE name (declination part)degpos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlchar