J/AJ/163/275ivo://CDS.VizieR/J/AJ/163/275doi:10.26093/cds/vizier.51630275CDSAndrews J.J.Curtis J.L.Chaname J.Agueros M.A.Schuler S.C.,Kounkel M.Covey K.R.2022-11-02T06:27:08Z2022-10-18T07:21:46ZCDS support team

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

cds-question@unistra.fropen-star-clustersstar-forming-regionsvisible-astronomytrigonometric-parallaxproper-motionsradial-velocitynarrow-band-photometrymetallicityeffective-temperaturemilky-way-galaxyOur view of the variety of stellar structures pervading the local Milky Way has been transformed by the application of clustering algorithms to the Gaia catalog. In particular, several stellar streams have been recently discovered that are comprised of hundreds to thousands of stars and span several hundred parsecs. We analyze one such structure, Theia 456, a low-density stellar stream extending nearly 200pc and 20{deg} across the sky. By supplementing Gaia astrometric data with spectroscopic metallicities from Large Sky Area Multi-Object Fiber Spectroscopic Telescope and photometric rotation periods from the Zwicky Transient Facility and the Transiting Exoplanet Survey Satellite, we establish Theia 456's radial velocity coherence, and we find strong evidence that members of Theia 456 have a common age (~175Myr), common dynamical origin, and formed from chemically homogeneous prestellar material ([Fe/H]=-0.07dex). Unlike well-known stellar streams in the Milky Way, which are in its halo, Theia 456 is firmly part of the thin disk. If our conclusions about Theia 456 can be applied to even a small fraction of the remaining ~8300 independent structures in the Theia catalog, such low- density stellar streams may be ubiquitous. We comment on the implications this has for the nature of star formation throughout the Galaxy.2022AJ....163..275Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/275CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)V/146 : LAMOST DR1 catalogs (Luo+, 2015)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/AJ/152/113 : Pleiades members with K2 light curves I Periods (Rebull+, 2016)J/AJ/152/115 : Pleiades members with K2 light curves. III. (Stauffer+, 2016)J/MNRAS/473/5393 : Wide binaries in Tycho-Gaia (Andrews+, 2018)J/AJ/158/77 : Candidates & members of Pisces-Eridanus stream (Curtis+, 2019)J/ApJ/879/100 : K2 rotation periods Hyades & Praesepe members (Douglas+, 2019)J/AJ/158/122 : Structure & star formation history of the MW (Kounkel+, 2019)J/A+A/622/L13 : Stellar stream in Gaia DR2 discovery (Meingast+, 2019)J/A+A/635/A45 : 570 new open clusters in Galactic disc (Castro-Ginard+, 2020)J/ApJ/904/140 : Ruprecht 147 members & rot. data 5 other cl. (Curtis+, 2020)J/MNRAS/496/2422 : Abundances 42 Pisces-Eridanus stream stars (Hawkins+, 2020)J/AJ/160/279 : Untangling the Galaxy II Structure within 3kpc (Kounkel+, 2020)J/A+A/639/A64 : Extended Meingast 1 source catalogue (Ratzenboeck+, 2020)J/A+A/638/A9 : A census of the near-by Psc-Eri stellar stream (Roeser+, 2020)J/ApJ/904/196 : Stellar parameters of a Young Stellar Snake (Tian, 2020)J/AJ/159/166 : Membership & properties moving groups with Gaia (Ujjwal+, 2020)J/A+A/649/A3 : Gaia Early Data Release 3 photometric passbands (Riello+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/275https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/275http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/275https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/275https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/275http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/275GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/275/table1 (Theia 456 catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/275/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/275/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/275/table1?GETtext/xml+votable180.050000true84.426799740.330039320.0055555555555555565/337 339 345 347 370 376 460 462 483-484 6/1353 1355 1360 1362 1368 1370 1385 1387 1392 1469 1471 1473-1478 1484 1512 1809 1813 1815 1817-1822 1831 1837 1839 1846 1925-1927 1944-1945 1956 1958 1968 24557 24559 245701.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/275?format=asciiOpticaldefaultJ/AJ/163/275/table1Theia 456 catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaGaia EDR3 identifiermeta.id;meta.mainRAICRS[65/88] Right Ascension, Gaia EDR3 (ICRS at Epoch=2016.0)degpos.eq.ra;meta.mainDEICRS[37/56] Declination, Gaia EDR3 (ICRS at Epoch=2016.0)degpos.eq.dec;meta.mainplx[1.47/2.23] Gaia EDR3 parallaxmaspos.parallax.trigfloate_plx[0.01/0.2] Uncertainty in plxmasstat.error;pos.parallaxfloatpmRA[-5.34/-3.25] Gaia EDR3 proper motion RAmas/yrpos.pm;pos.eq.rafloate_pmRA[0.01/0.3] Uncertainty in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-2.09/-0.39] Gaia EDR3 proper motion DEmas/yrpos.pm;pos.eq.decfloate_pmDE[0.009/0.2] Uncertainty in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatgmag[8.4/18.4] mean g-band Gaia EDR3 magnitudemagphot.mag;em.optfloatBPmag[8.42/19.9]? mean BP-band Gaia EDR3 magmagphot.mag;em.opt.BfloatnullableRPmag[8.31/17.2]? mean RP-band Gaia EDR3 magmagphot.mag;em.opt.RfloatnullableRVel-DR2[-24/-0.16]? Gaia DR2 radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RVel-DR2[1/15]? Uncertainty in RVel-DR2km/sstat.errorfloatnullableAg[0.21/1.55] Derived Gaia g-band extinctionmagphys.absorptionfloatAbp[0.2/1.85] Derived Gaia BP-band extinctionmagphys.absorption;em.opt.BfloatArp[0.12/1.13] Derived RP-band extinctionmagphys.absorption;em.opt.RfloatProt-TESS[0.36/9]? Rotational period, TESSdtime.periodfloatnullableProt-ZTF[0.36/183]? Rotational period, ZTFdtime.periodfloatnullableProt-final[0.36/11.2]? Final Rotational perioddtime.period;phys.atmol.finalfloatnullableTeff-lamost[3903/8333]? LAMOST Effective temperatureKphys.temperature.effectiveintnullablee_Teff-lamost[10/247]? LAMOST Uncertainty in Teff-lamostKstat.errorintnullablelogg-lamost[2.29/4.85]? LAMOST Surface gravity, loglog(cm.s**-2)phys.gravityfloatnullablee_logg-lamost[0.02/0.4]? LAMOST Uncertainty in logg-lamostlog(cm.s**-2)stat.errorfloatnullableRVel-lamost[-43.4/24.9]? LAMOST Radial Velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RVel-lamost[3/14]? LAMOST Uncertainty in RVel-lamostkm/sstat.errorfloatnullableFeH-lamost[-0.65/0.12]? LAMOST Metallicityphys.abund.Fefloatnullablee_FeH-lamost[0.01/0.3]? LAMOST Uncertaintyin FeH-lamoststat.errorfloatnullableGaiaDR2Display data from Gaia DR2 (I/345) within 1.5"meta.ref.urlintnullableLAMOSTDisplay data from LAMOST DR1 (V/146) within 5"meta.ref.urlintnullable_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.decnullableindexed