J/A+A/423/517ivo://CDS.VizieR/J/A+A/423/517doi:10.26093/cds/vizier.34230517CDSRocha-Pinto H.J.Flynn C.Hanninen J.Scalo J.Maciel W.J.Hensler G.2017-11-10T11:16:40Z2004-10-12T16:57:45ZCDS support team

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

cds-question@unistra.frlate-type-starsradial-velocityIn this paper, we investigate some chemokinematical properties of the Milky Way disk, by using a sample composed by 424 late-type dwarfs. We show that the velocity dispersion of a stellar group increases steadily the age of the stellar group, according to a disk heating law proportional to t^0.26^, where t is the age of the stellar group. The temporal evolution of the vertex deviation is considered in detail. It is shown that the vertex deviation does not follow a smooth variation with time. Previous studies in the literature seem to not have found it due to the use of statistical ages for stellar groups, rather than individual ages. The possibility to use the orbital parameters of a star to derive information about its birthplace is investigated, and we show that the mean galactocentric radius is likely to be the most reliable stellar birthplace indicator. However, this information cannot be used presently to derive radial evolutionary constraints, due to an intrinsic bias present in all samples constructed from nearby stars.2004A&A...423..517Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/423/517CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/118/895 : Milky way and stellar distributions (Tiede+ 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/423/517https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/423/517http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/423/517https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/423/517https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/423/517http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/423/517GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/423/517/table1 (Chemokinematical parameters for 424 stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/423/517/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/423/517/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/423/517/table1?GETtext/xml+votable180.050000true1.65326629.0215020.0055555555555555566/100 377 684 744 753 765 944 1209 1247 1341 1452 1556 1603 1808 1875 2213 2254 2377 2472 2476 2622 2650 2870 2896 3036 3102 3639 3691 4227 4278 4468 5009 5074 5088 5160 5304 5413 5484 5498 5522 5530 5587 5622 5718 5836 6056 6066 6308 6339 6409 6501 6523 6766 7763 7803 7868 7907 7978 8094 8109 8239 8476 8663 8716 8993 8995 9403 9476 9492 9662 9801 9843 9873 10375 10812 10899 11075 11128 11142 11225 11270 11296 11314 11403 11405 11412 11510 11713 11732 11746 11856 12146 12204 12268 12592 12825 12846 12890 12944 13025 13620 13763 13994 14146 14419 14426 14459 14502 14539 14662 15030 15132 15174 15593 15727 15883 15962 16069 16386 16408 16518-16519 16532 16652 17171 17219 17425 17486 17564 17606 17847 17918 18067 18133 18139 19027 19051 19121 19312 19327 19424 19525 19585 19912 20145 20328 20392 20446 20621 21060 21177 22118 22157 22708 22823 22841 23159 23190 23230 23342 23575 23661 24028 24151 24160 24178 24536 24558 24634 24713 24729 24769 24924 25102 25444 25902 25966 26050 26239 26462 26521 26575 26634 26963 27006 27268 27374 27431 28180 28244-28245 28494 28605 28664 28670 28696 28719 28961 28987 29913 30141 30429 30576 30614 30665 30965 31072 31101 31130 31132 31411 31478 31768 31785 31966 32100 32192 32211 32357 32372 32552 32561 32596 32757 32812 32848 32921 33082 33201 33224 33252 33281 33287 33456 33552 33717 33818 33854 34040 34074 34126 34130 34199 34442 34446 34817 34896 35064 35079 35191 35230 35351 35423 35468 35525 35784 35896 35954 36365 36664 36693 36697 36762 37021 37408 37595 37607 37616 38159 38235 38339 38421 38566 38742 38788 38790 38814 38932 38955 38966 38975 39034 39040 39213 39215 39256-39257 39282-39284 39403 39422 39461 39500 39562 39576 39693 39730 39767 39854 39888 40078 40105 40679 40932 40968 41055 41221 41225 41259 41412 41463 41568 41570 41607 41612 41752 41861 41912 41935 41941 42009 42115 42203 42228 42248 42318 42463 42656 42760 42845 42860 42911 43072 43315 43318 43544 43639 43649 43687 43724 43782 43797 43844 43944 43977 43989 44115 44180 44284 44435 44549 45143 45175 45299 45472 45535 45564 45621 45654 45668-45669 45927 45992 46076 46112 46129 46135 46234 46287 46297 46306 46320 46325 46355 46501 46593 46626 46640 46654 46681-46682 46734 46874 46925 46944 46967 46998 47045 47073 47133 47137 47149 47234 47287 47360 47377 47502 47584 47629 47706 47740 47745 47824 47910 47935 48022 48223 48283 48291 48305 48394 48705 49027https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/423/517?format=asciiOpticaldefaultJ/A+A/423/517/table1Chemokinematical parameters for 424 starsNameHD or BD designationmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogR'HKChromospheric activity index (G1)phot.flux;arith.ratiofloat[Fe/H]Stellar photometric metallicitylog(Sun)phys.abund.FefloatRVRadial velocitykm/sphys.veloc;pos.heliocentricfloatAgeStellar chromospheric ageGyrtime.agefloatUvelU velocity component w.r.t the LSRkm/sphys.velocintVvelV velocity component w.r.t the LSRkm/sphys.velocintWvelW velocity component w.r.t the LSRkm/sphys.velocinte_UvelError in U velocitykm/sstat.errorinte_VvelError in V velocitykm/sstat.errorinte_WvelError in W velocitykm/sstat.errorintRm? Average orbital galactocentric radiuskpcphys.size.radius;src.orbitalfloatnullableRp? Perigalacticon galactocentric radiuskpcphys.angSize.smajAxis;src.orbitalfloatnullableZmax? Maximum heigh above the Galactic planekpcpos.distance;src.orbitalfloatnullableecc? Orbital eccentricitysrc.orbital.eccentricityfloatnullableSimbadSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main