J/A+A/684/A28ivo://CDS.VizieR/J/A+A/684/A28doi:10.26093/cds/vizier.36840028CDSLlorente de AndresF.de la Reza R.Cruz P.Cuenda-Munoz D.,Alfaro E. J.Chavero C.Cifuentes C.2024-11-29T20:01:56Z2024-04-01T11:54:16ZCDS support team

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

cds-question@unistra.frdwarf-starsg-starschemical-abundancesstellar-radiivisible-astronomyThis work aims to investigate the behaviour of the lithium abundance in stars with and without detected planets. Our study is based on a sample of 1332 FGK main-sequence stars with measured lithium abundances, for 257 of which planets were detected. Our method reviews the sample statistics and is addressed specifically to the influence of tides and orbital decay, with special attention to planets on close orbits, whose stellar rotational velocity is higher than the orbital period of the planet. In this case, tidal effects are much more pronounced. The analysis also covers the orbital decay on a short timescale, with planets spiralling into their parent star. Furthermore, the sample allows us to study the relation between the presence of planets and the physical properties of their host stars, such as the chromospheric activity, metallicity, and lithium abundance. In the case of a strong tidal influence, we cannot infer from any of the studies described that the behaviour of Li differs between stars that host planets and those that do not. Our sample includes stars with super-solar metallicity ([Fe/H]>0.15dex) and a low lithium abundance (A(Li)<1.0dex). This enabled us to analyse scenarios of the origin and existence of these stars. Considering the possible explanation of the F dip, we show that it is not a plausible scenario. Our analysis is based on a kinematic study and concludes that the possible time that elapsed in the travel from their birth places in the central regions of the Galaxy to their current positions in the solar neighbourhood is not enough to explain the high lithium depletion. It is remarkable that those of our high-metallicity low-lithium stars with the greatest eccentricity (e>0.2) are closest to the Galactic centre. A dedicated study of a set of high-metallicity low-Li stars is needed to test the migration-depletion scenario.2024A&A...684A..28Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/684/A28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/654/A137 : Evolution of Li in FGK dwarf stars (Llorente de Andres+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/684/A28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/684/A28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/684/A28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/684/A28https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/684/A28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/684/A28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/684/A28/tablea1 (Parameters of stars and their host planets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/684/A28/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/684/A28/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/684/A28/tablea1?GETtext/xml+votable180.050000true1.5799167-49.07519440.005555555555555556Cone search capability for table J/A+A/684/A28/tablea2 ([Ti/H] and [Ti/Fe] values for objects with negative U that are older than 8 Ga)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/684/A28/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/684/A28/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/684/A28/tablea2?GETtext/xml+votable180.050000true0.2428333-11.823750.0055555555555555566/311 431 679 748 871 1597 2110 2152 2416 2497 3663 3876 3932 3979 4136 4528 4881 4990 5067 5266 5522 5587 5718 6760 6791 6821 6831 6926 7240 7746 7978 8197 8279 8319 8357 8792 9403 9483 9662 9811 9843 10400 11087 11326 11732 12024 12146 12424 12465 12512 12644 12704 12899 12983 13439 13680 13702 13808 14412 14419 14434 14525 14534 14548 14573 14682 14901 14940 14973 15105 15129 15140 15174 15727 16432 16627 16652 16679 16883 16995 17047 17172 17206 17249 17266 17341 17425 17587 17641 17730 17804 17819 17888 17954 18614 18637 18747 18766 18772 18821 18835 19619 19904 19912 20116 20145 20339 20402 20593 20661 20746 21003 21066 21326 21477 21484 21696 21715 21809 21838 21906 21989 22001 22036 22065 22120 22208 22252 22590 22608 22654 22816 23030 23066 23096 23201 23414 23646 23681 23780 24019 24105 24178 24212 24312 24409 24428 24809 24831 24924 25014 25136 25140 25401 25424 25604 25875 25939 26183 26242 26521 26575 26706-26707 26901 26978 26997 27088 27164 27616 27661 27741 27975 28130 28400 28703 28763 28821-28822 29349 29513 30015 30123 30233 30278 30378 30526 30707 30720 30943 31494 31503 31582 31641 31860 32089 32509 32561 32575 32730 32848 32930 33042 33063 33082 33182 33243 33258 33430 33456 33510 33590 33630 33649 33717 33798 33813 33923 33974 34390 34446 34530 34905 34951 35079 35152 35210 35230 35362 35415 35442 35532 35590 35954 35968 35994 36115 36142 36165 36506 36540 36635 36697 36813 36918 37018 37164 37232 37419 37461 37573 37583 37831 37923 37954-37955 38216 38238 38283 38311 38545 38566 38682 38698 38728 38742 38966 39030 39074 39257 39280 39316 39364 39402 39500 39646 39854 39984 40220 40400 40692 40716 40722 40802 40862 40988 41204 41211 41225 41255 41293 41443 41446 41591 41607 41724 41752 41853 41912 41935 41941 42006 42042 42044 42063 42150 42179 42205 42221 42248 42281 42386 42510 42760 42769 42918 42934 43001 43012 43228 43280 43310 43544 43641 43677 43813 43818 43911 43977 44243 44260 44359 44398 44740 44910 45168 45182 45258 45364 45668 45682 45717 45837 45865 45907 45948 46053 46076 46111-46112 46193 46234 46248 46287 46297 46306 46429 46593 46800 46843 46967 47073 47137 47550 47590 47600 47674 47930 48105 48402 48519 48652 48731 48870 49028 49042https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/684/A28?format=asciiOpticaldefaultJ/A+A/684/A28/tablea1Parameters of stars and their host planetsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIdIdentifiermeta.idcharNameNamemeta.id;meta.maincharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypeSpectral typesrc.spTypecharNplanetNumber of planets hosted by the starmeta.numberintMtTotal mass of the planets in Jovian units(1.898187x10+27kg)phys.massfloatP? Orbital period of the closest planetdtime.perioddoublenullablea? Semi-major axis of the closest planetAUphys.size.smajAxisfloatnullableeEccentricity of the closest planetsrc.orbital.eccentricitydoubleProt? Stellar rotational perioddtime.perioddoublenullabler_ProtStellar rotational period referencemeta.ref;pos.framecharRadStellar radiussolRadphys.size.radiusfloatr_RadStellar radius referencemeta.ref;pos.framecharlogOD? Decimal logarithm of the orbital decaysrc.orbitalfloatnullableJ/A+A/684/A28/tablea2[Ti/H] and [Ti/Fe] values for objects with negative U that are older than 8 GaSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIdIdentifiermeta.idcharNameNamemeta.id;meta.maincharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main[Ti/H]? Titanium to Hydrogen ratiophys.abundfloatnullable[Ti/Fe]? Titanium to Iron ratiophys.abundfloatnullabler_[Ti/H]References for the Titanium ratiosmeta.ref;pos.framecharAlpha[False True] Boolean flag for [alpha/Fe] instead of [Ti/Fe]meta.codechar