J/AJ/158/77ivo://CDS.VizieR/J/AJ/158/77doi:10.26093/cds/vizier.51580077CDSCurtis J.L.Agueros M.A.Mamajek E.E.Wright J.T.Cummings J.D.2019-10-10T05:56:07Z2019-10-10T06:48:53ZCDS support team

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

cds-question@unistra.frstellar-populationseffective-temperaturephotometryvisible-astronomyradial-velocitystellar-distancePisces-Eridanus (Psc-Eri), a nearby (d~80-226 pc) stellar stream stretching across ~120{deg} of the sky, was recently discovered with Gaia data. The stream was claimed to be ~1 Gyr old, which would make it an exceptional discovery for stellar astrophysics, as star clusters of that age are rare and tend to be distant, limiting their utility as benchmark samples. We test this old age for Psc-Eri in two ways. First, we compare the rotation periods for 101 low-mass members (measured using time-series photometry from the Transiting Exoplanet Survey Satellite) to those of well-studied open clusters. Second, we identify 34 new high-mass candidate members, including the notable stars {lambda} Tauri (an Algol-type eclipsing binary) and HD 1160 (host to a directly imaged object near the hydrogen-burning limit). We conduct an isochronal analysis of the color-magnitude data for these highest-mass members, again comparing our results to those for open clusters. Both analyses show that the stream has an age consistent with that of the Pleiades, i.e., ~120 Myr. This makes the Psc-Eri stream an exciting source of young benchmarkable stars and, potentially, exoplanets located in a more diffuse environment that is distinct from that of the Pleiades and of other dense star clusters.2019AJ....158...77Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/77CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)J/A+A/622/L13 : Stellar stream in Gaia DR2 discovery (Meingast+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/77https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/158/77/table2 (Rotation periods for Meingast et al. (2019, J/A+A/622/L13) members of the Psc-Eri stream)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/77/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/77/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/77/table2?GETtext/xml+votable180.050000true65.63125-7.5508890.005555555555555556Cone search capability for table J/AJ/158/77/table3 (Candidate massive members of the Psc-Eri stream)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/77/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/77/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/77/table3?GETtext/xml+votable180.050000true60.170041712.49027780.0055555555555555566/52 16626 16670 16691 16736 16982 16988 16989 16990 17009 17068 17092 17125 17185 17254 17292 17457 17626 17656 17683 17691 17703 17713 17715 17733 17736 17859 17883 17987 17989 18064 18438 18448 18455 19017 19165 19339 19431 19441 19476 19513 21094 21113 21172 21189 21193 21195 21218 21229 21231 21237 21386 21411 22532 22542 22563 22566 22580 22614 22635 22639 22648 22667 22676 22685 22691 22707 22713 22720 22721 22728 22730 22736 22771 22776 22786 23047 23058 23060 23074 23113 23116 23140 23454 23483 34334 34410 34423 34610 34664 35351 35390 35414 35676 35736 35849 35853 36012 36031 36109 36118 36199 36215 36218 36261 36269 36285 36340 36342 36358 36371 36392 36434 36444 36449 36559 36576 36588 36629 36631 36660 36671 36725 36773 36799 36805 36816 36821 46538 470951.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/158/77?format=asciiOpticaldefaultJ/AJ/158/77/table2Rotation periods for Meingast et al. (2019, J/A+A/622/L13) members of the Psc-Eri streamNoteNote (2)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/101] Sequential running number, sorted by G_BP_-G_RP_meta.recordintf_Seq[a] Source flag (1)meta.codecharSourceGaia DR2 identifiermeta.id;meta.mainRA_ICRSHour of Right Ascension (ICRS) (G1)pos.eq.ra;meta.mainDE_ICRSDegree of Declination (ICRS) (G1)pos.eq.dec;meta.mainGBP-GRP[0.432/1.852] Gaia DR2 G_BP_-G_RP_ color (G1)magphot.color;em.opt.B;em.opt.RfloatTeff[3956/7187] Surface effective temperature (G1)Kphys.temperature.effectiveintGmag[8.562/13.375] Gaia DR2 G band magnitude (G1)magphot.mag;em.optfloatGMag[2.802/8.099] Absolute G mag, M_G_=G-5*log_10_(100/{pi}) (G1)magphys.magAbsfloatProt[0.45/12.22] Rotation period derived from TESS full-frame images (FFI) datadtime.periodfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/158/77/table3Candidate massive members of the Psc-Eri streamNameCommon aliasmeta.idrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/34] Sequential running number, sorted by GMagmeta.recordintSourceGaia DR2 identifiermeta.id;meta.mainRAICRSHour of Right Ascension (ICRS, epoch 2015.5) (G1)pos.eq.ra;meta.mainDEICRSDegree of Declination (ICRS, epoch 2015.5) (G1)pos.eq.dec;meta.mainGBP-GRP[-0.193/0.495] Gaia DR2 G_BP_-G_RP_ color (G1)magphot.color;em.opt.B;em.opt.RfloatGmag[3.387/8.999] Gaia DR2 G band magnitude (G1)magphot.mag;em.optfloatGMag[-2.039/2.927] Absolute G mag (G1)magphys.magAbsfloatRV[5/19.9]? Radial velocity obtained from SIMBADkm/sphys.veloc;pos.heliocentricfloatnullabledV[1.3/4.7]? Absolute deviation of UVW velocities from the stream's median value {Delta}vkm/sstat.errorfloatnullabledmu[0.3/9.3] Minimum difference in proper motion relative to the nearest neighbor {Delta}{mu} (1)mas/yrpos.pm;arith.diff;stat.minfloatdr[0.1/18.7] Physical distance to nearest neighbor {Delta}r (1)pcpos.distancefloatNoteNote on particular stars from SIMBAD (2)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.decnullableindexed