J/MNRAS/503/3232ivo://CDS.VizieR/J/MNRAS/503/3232doi:10.26093/cds/vizier.75033232CDSPavlidou T.Scholz A.Teixeira P.S.2024-11-06T20:33:24Z2024-04-15T13:28:06ZCDS support team

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

cds-question@unistra.frstellar-associationsyoung-stellar-objectsvisible-astronomyWe use photometric and kinematic data from Gaia DR2 to explore the structure of the star-forming region associated with the molecular cloud of Perseus. Apart from the two well-known clusters, IC 348 and NGC 1333, we present five new clustered groups of young stars, which contain between 30 and 300 members, named Autochthe, Alcaeus, Heleus, Electryon, and Mestor. We demonstrate that these are co-moving groups of young stars, based on how the candidate members are distributed in position, proper motion, parallax, and colour-magnitude space. By comparing their colour-magnitude diagrams to isochrones, we show that they have ages between 1 and 5 Myr. Using 2MASS and WISE colours, we find that the fraction of stars with discs in each group ranges from 10 to ~50 per cent. The youngest of the new groups is also associated with a reservoir of cold dust, according to the Planck map at 353 GHz. We compare the ages and proper motions of the five new groups to those of IC 348 and NGC 1333. Autochthe is clearly linked with NGC 1333 and may have formed in the same star formation event. The seven groups separate roughly into two sets that share proper motion, parallax, and age: Heleus, Electryon, and Mestor as the older set, and NGC 1333 and Autochthe as the younger set. Alcaeus is kinematically related to the younger set, but at a more advanced age, while the properties of IC 348 overlap with both sets. All older groups in this star-forming region are located at higher galactic latitude.2021MNRAS.503.3232Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/503/3232CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)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/503/3232https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/503/3232http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/503/3232https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/503/3232https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/503/3232http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/503/3232GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/503/3232/tableb1 (List of Autochthe (PST1) members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/3232/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/3232/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/3232/tableb1?GETtext/xml+votable180.050000true50.78674870930.807295336710.005555555555555556Cone search capability for table J/MNRAS/503/3232/tableb2 (List of Alcaeus (PST2) members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/3232/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/3232/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/3232/tableb2?GETtext/xml+votable180.050000true57.7201590832630.691157756910.005555555555555556Cone search capability for table J/MNRAS/503/3232/tableb3 (List of Mestor (PST3) members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/3232/tableb3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/3232/tableb3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/3232/tableb3?GETtext/xml+votable180.050000true58.1075281383833.454142956350.005555555555555556Cone search capability for table J/MNRAS/503/3232/tableb4 (List of Electryon (PST4) members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/3232/tableb4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/3232/tableb4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/3232/tableb4?GETtext/xml+votable180.050000true59.7788265262430.349933443340.005555555555555556Cone search capability for table J/MNRAS/503/3232/tableb5 (List of Heleus (PST5) members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/3232/tableb5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/3232/tableb5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/3232/tableb5?GETtext/xml+votable180.050000true56.7505463260129.188865360890.0055555555555555565/299 302 385 388 390 6/511 853 880-881 1190-1191 1194-1195 1200 1202-1203 1536-1537 1539 1549 1551 1564 15841.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/503/3232?format=asciiOpticaldefaultJ/MNRAS/503/3232/tableb1List of Autochthe (PST1) members_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifiermeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.mainpmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigdoublee_plxParallax errormasstat.error;pos.parallaxfloatGmagGaia G magnitudemagphot.mag;em.optdoubleAllWISEAllWISE designationmeta.idcharJ/MNRAS/503/3232/tableb2List of Alcaeus (PST2) membersGmagGaia G magnitudemagphot.mag;em.optdouble_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifiermeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.mainpmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigdoublee_plxParallax errormasstat.error;pos.parallaxfloatAllWISEAllWISE designationmeta.idcharJ/MNRAS/503/3232/tableb3List of Mestor (PST3) members_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifiermeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.mainpmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigdoublee_plxParallax errormasstat.error;pos.parallaxfloatGmagGaia G magnitudemagphot.mag;em.optdoubleAllWISEAllWISE designationmeta.idcharJ/MNRAS/503/3232/tableb4List of Electryon (PST4) members_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexede_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifiermeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.mainpmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigdoublee_plxParallax errormasstat.error;pos.parallaxfloatGmagGaia G magnitudemagphot.mag;em.optdoubleAllWISEAllWISE designationmeta.idcharJ/MNRAS/503/3232/tableb5List of Heleus (PST5) members_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 identifiermeta.id;meta.mainRA_ICRSRight ascension (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5degpos.eq.dec;meta.mainpmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion along RA errormas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion along DE errormas/yrstat.error;pos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigdoublee_plxParallax errormasstat.error;pos.parallaxfloatGmagGaia G magnitudemagphot.mag;em.optdoubleAllWISEAllWISE designationmeta.idchar