J/A+A/638/A9ivo://CDS.VizieR/J/A+A/638/A9doi:10.26093/cds/vizier.36380009CDSRoeser S.Schilbach E.2022-09-07T09:08:16Z2020-05-29T08:02:32ZCDS support team

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

cds-question@unistra.fropen-star-clustersstellar-populationsapparent-magnitudestellar-massesWithin a sphere of 400pc radius around the Sun, we search for members of the Pisces-Eridanus (Psc-Eri) stellar stream in the Gaia Data Release 2 DR2) data set. We compare basic astrophysical characteristics of the stream with those of the Pleiades. We used a modified convergent-point method to identify stars with 2D - velocities consistent with the space velocity of the Psc-Eri stream and the Pleiades, respectively. We found 1387 members of the Psc-Eri stream in a G-magnitude range from 5.1mag to 19.3mag at distances between 80 and 380pc from the Sun. The stream has a nearly cylindrical shape with a length of at least 700pc and a thickness of 100pc. The accumulated stellar mass of the 1387 members amounts to about 770M_{sun}_, and the stream is gravitationally unbound. For the stream we found an age of about 135Myr. In many astrophysical properties Psc-Eri is comparable to the open cluster M45 (the Pleiades): in its age, its luminosity function (LF), its present-day mass function (PDMF) as well as in its total mass. Nonetheless, the two stellar ensembles are completely unlike in their physical appearance. We cautiously give two possible explanations for this disagreement: (i) the star-formation efficiency in their parental molecular clouds was higher for the Pleiades than for Psc-Eri or/and (ii) the Pleiades had a higher primordial mass segregation immediately after the expulsion of the molecular gas of the parental cloud.2020A&A...638A...9Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/638/A9CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)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/A+A/638/A9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/638/A9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/638/A9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/638/A9https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/638/A9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/638/A9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/638/A9/tablea1 (Psc-Eri stream members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/638/A9/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/638/A9/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/638/A9/tablea1?GETtext/xml+votable180.050000true0.19432-20.489310.005555555555555556Cone search capability for table J/A+A/638/A9/tablea2 (Pleiades members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/638/A9/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/638/A9/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/638/A9/tablea2?GETtext/xml+votable180.050000true46.9331624.844040.0055555555555555564/28 30 5/89-91 94 116-118 124 126 209 212 3169 3171 3174 4406 4518 4530 4857 5183 5293 5298 5669 6/136 161 272 297 310 319 333-334 353 355 368 370 373-374 380-382 391 404-405 407 413-414 424 436-437 439 441 443 447 476 478-479 500 502-503 509-511 673 793 797 832 834-835 840 843 845 856 862 870 884 1065 1153 1160 1162 1193-1194 2282 2289 12292-12293 12487 12496-12497 12499-12500 12504 12507 12516 12518 12560 12563 12573 12591-12593 12597-12598 12602-12605 12607 12614 12618-12619 12621 12640 12689 12691 12693-12694 12700 12711 12717 12722-12724 12726 12729-12730 12736-12737 12739 12770-12771 12779 13120 13198 13222 13227 13316 13321 13325-13326 13336 13338 13345 13350-13351 13363 13381-13382 13389 13393 13396-13397 13401-13402 13404-13405 13576 13583 13616 16479 16587 16605 16622 16626 16631 16639 16670 16677 16689 16696 16699 16710 16735 16770 16775 16782 16789-16790 16830 16839-16840 16843 16855 16885 16925 16975 16979-16980 16982-16985 16988-16989 16999 17009 17012 17014-17015 17017 17052 17068 17091-17092 17097 17103 17107-17108 17115 17117 17125 17138 17162 17165 17172 17185 17192 17198 17216 17222 17244 17246-17247 17253-17254 17260 17269 17279 17286 17289 17292 17301 17339-17340 17360 17366-17368 17380 17387 17397-17398 17401 17421 17429 17435 17437 17456-17457 17464 17470 17474 17488 17493 17497 17501 17507 17515 17519 17524-17525 17528 17531 17535 17542 17546 17559 17569 17579-17580 17590 17594 17604 17607 17611 17614 17618 17623 17656-17658 17661 17666-17667 17670-17671 17673 17675-17676 17679-17680 17682-17684 17688-17689 17691 17696-17697 17701 17703 17705 17707 17711 17713 17715-17716 17720 17723-17725 17733-17734 17736 17740-17741 17745 17760 17762 17770 17803-17805 17818-17819 17827 17829 17832 17837 17841-17842 17845 17849-17850 17859 17861 17864-17865 17870-17871 17883 17901-17902 17921 17929 17931 17938 17940 17946 17948 17957 17959 17967-17968 17974 17976-17977 17979 17983 17987-17988 17993 17996 17999 18001 18004 18017 18022 18025-18026 18029-18030 18033 18040 18049 18054 18061 18063-18064 18067 18069-18071 18077 18079 18081-18083 18086 18089 18091 18093-18094 18096 18099 18103-18104 18108-18110 18116 18118-18119 18127-18128 18132 18136 18144 18147 18151 18153 18155 18157 18162 18179-18180 18183 18187 18201 18203 18211 18213 18222 18377 18394 18426 18438-18439 18441-18442 18448 18455 18504 18511 18516 18534-18535 18537 18539 18542 18547 18554 18559 18580 18582 18609 18617 18621 18629 18631 18639 18642 18644 18648 18651 18655 18664 18671 18673 18675-18676 18679-18680 18683 18687 18695 18710 18723 18729-18731 18733 18753 18769 18771 18774 18779 18782 18787 18792-18793 18798 18805 18807 18809-18812 18815 18821 18824 18826 18828 18845 18848 18855-18857 18876 18880 18883 18885 18889 18893-18895 18898 18901-18902 18905 18907 18911 18913 18916 18918-18919 18926 18932 18937-18939 18965 18967 19003 19005-19009 19013 19029 19033 19035-19036 19041 19044 19057 19059-19061 19065 19075 19083 19089-19090 19093-19094 19098-19099 19106 19110-19113 19116 19118-19119 19121 19125 19127 19129 19131 19133 19135-19136 19140 19142 19146 19153 19158 19163 19170 19201-19204 19213 19215 19218 19223-19224 19226-19227 19230-19233 19235 19238 19240-19241 19246 19249 19253-19254 19256 19261 19270 19272 19276 19282 19301 19304 19307 19309-19310 19312-19313 19317 19320 19328-19329 19334-19336 19338-19339 19342 19345 19349 19359 19361 19367-19368 19370 19377 19380-19381 19383 19388-19389 19392 19395 19401 19406 19410-19411 19415-19416 19422 19424-19425 19435 19437-19439 19450 19458 19460 19463 19465-19467 19470-19471 19473 19476-19477 19480 19489 19491-19493 19495 19497 19503 19505 19507 19514 19555 19583 19585 19587 19592 19594-19595 19603 19617 19625 19629 19633 19636 19640-19641 19645 19669 19701 19707 19783 19789 19798 19800 19829 19843 19850 19854 19864 19878 19890 19894 19936 19938 19975 19978 19981 19983 20017 20035 20040 20042 20052 20059-20060 20092 20188 20190 20209 20212 20226 20233 20244 20262 20288 20386 20616 20643 20653 20659 20673 20677 20679 20691 20776 20868 20873 20876 20896 20898-20899 20904-20906 20910 20948 21007-21009 21011 21017 21045 21063 21066 21071 21073-21077 21080-21082 21084 21096 21101 21104 21106 21108 21110 21121 21130 21141 21149 21155-21156 21160 21167 21178 21180 21182-21183 21185-21186 21189 21198 21202 21208 21210-21211 21213-21215 21218-21221 21224 21227-21229 21231 21235-21237 21239 21245 21248 21254 21259-21260 21292 21294-21295 21376 21378 21386-21387 21408-21409 21411 21416 21434 21478 21481 21483 21487 21491 21632 21634 22532 22536 22538 22546-22548 22553 22560 22566-22567 22571 22573 22583-22584 22591-22592 22599 22605 22610-22611 22613 22616 22618 22620 22622 22631-22632 22634-22635 22638-22640 22643 22648 22663 22667 22675 22680 22685 22691 22696-22697 22703 22714-22715 22720-22721 22723-22724 22726 22728 22731 22736 22738 22758 22763 22787 22790 22853 22861 22869 22879 22974 22987 23014 23019 23047-23048 23052 23072 23074 23078 23094 23097 23099 23168-23169 23171-23172 23256 23258 23260 23292 23326-23327 23361 23365 23370 23373 23392 23400 23403 23447 23449 23476 23488 23490 23492 23504 23555 23561 29968-29969 29973 30037 30039 33207 33213 33215 33560 33715 33782 33786 34046 34146 34160 34166 34169 34173 34218 34238 34250 34264-34265 34288 34301 34334 34351 34365 34383 34387 34410 34416 34419 34422-34423 34464 34485 34565 34578 34581 34600 34624 34634 34661 34664 34669 34678 34808 34813 34815 35098 35122 35148 35414-35416 35446 35532 35585 35676 35702 35704 35736 35744 35746 35772 36012 36031 36158 36167 36185 36191 36199 36214-36215 36221 36245 36293 36299 36301-36302 36313 36316 36326 36333 36338 36340 36344 36356 36358 36361 36392 36401 36434 36444 36449 36463 36474-36475 36532 36540 36556 36581 36588-36589 36629 36631 36636 36661 36670-36671 36673 36678 36683-36684 36693 36696-36697 36703 36710 36713 36716-36717 36725 36727 36730 36734 36758 36764 36772-36773 36780-36782 36787 36799 36802 36804 36809 36816 36825-36827 36829 36836-36837 36840-36841 36848-36849 36856 36858 36862 47095https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/638/A9?format=asciidefaultJ/A+A/638/A9/tablea1Psc-Eri stream memberspcontProbability of being contaminated (3)stat.fit.goodnessdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceGaia DR2 source id (source_id)meta.id;meta.mainRAICRSGaia DR2 right ascension (ICRS at Ep=2015.5) rounded to 10^-5^ degreesdegpos.eq.ra;meta.mainDEICRSGaia DR2 declination (ICRS at Ep=2015.5) rounded to 10^-5^ degreesdegpos.eq.dec;meta.mainGmagG-band mean magnitude (Vega) (phot_g_mean_mag)magphot.mag;em.optfloatSimbadSimbad 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)degpos.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)degpos.eq.decnullableindexedXGalactic Cartesian coordinate X (positive towards the Galactic centre)pcpos.cartesian.x;pos.galacticfloatYGalactic Cartesian coordinate Y (positive in the direction of Galactic rotation)pcpos.cartesian.y;pos.galacticfloatZGalactic Cartesian coordinate Z (positive towards the North Galactic Pole)pcpos.cartesian.z;pos.galacticfloatdvparVelocity parallel to the convergent point (1)km/sphys.velocfloatvperoVelocity perpendicular to the convergent point (2)km/sphys.velocfloatMassMass of the star (system mass; see paper)solMassphys.massfloatRUWEThe value of RUWE as given in Gaia DR2 (see paper)meta.code.qualdoubleJ/A+A/638/A9/tablea2Pleiades membersSimbadSimbad 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)degpos.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)degpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceGaia DR2 source id (source_id)meta.id;meta.mainRAICRSGaia DR2 right ascension (ICRS at Ep=2015.5) rounded to 10^-5^ degreesdegpos.eq.ra;meta.mainDEICRSGaia DR2 declination (ICRS at Ep=2015.5) rounded to 10^-5^ degreesdegpos.eq.dec;meta.mainGmagG-band mean magnitude (Vega) (phot_g_mean_mag)magphot.mag;em.optfloatXGalactic Cartesian coordinate X (positive towards the Galactic centre)pcpos.cartesian.x;pos.galacticfloatYGalactic Cartesian coordinate Y (positive in the direction of Galactic rotation)pcpos.cartesian.y;pos.galacticfloatZGalactic Cartesian coordinate Z (positive towards the North Galactic Pole)pcpos.cartesian.z;pos.galacticfloatdvparVelocity parallel to the convergent point (1)km/sphys.velocfloatvperoVelocity perpendicular to the convergent point (2)km/sphys.velocfloatpcontProbability of being contaminated (3)stat.fit.goodnessdoubleMassMass of the star (system mass; see paper)solMassphys.massfloatRUWEThe value of RUWE as given in Gaia DR2 (see paper)meta.code.qualdouble