Lithium abundance in dwarfs & subgiants J/A+A/614/A55 ivo://CDS.VizieR/J/A+A/614/A55 doi:10.26093/cds/vizier.36140055 CDS Aguilera-Gomez C. Ramirez I. Chaname J. 2018-09-18T13:31:27Z 2018-06-12T11:50:28Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr chemical-abundances g-stars stellar-masses stellar-ages We address the existence and origin of the lithium (Li) desert, a region in the Li-Teff plane sparsely populated by stars. Here we analyze some of the explanations that have been suggested for this region, including mixing in the late main sequence, a Li dip origin for stars with low Li abundances in the region, and a possible relation with the presence of planets. To study the Li desert, we measured the atmospheric parameters and Li abundance of 227 late-F dwarfs and subgiants, chosen to be in the Teff range of the desert and without previous Li abundance measurements. Subsequently, we complemented those with literature data to obtain a homogeneous catalog of 2318 stars, for which we compute masses and ages. We characterize stars surrounding the region of the Li desert. We conclude that stars with low Li abundances below the desert are more massive and more evolved than stars above the desert. Given the unexpected presence of low Li abundance stars in this effective temperature range, we concentrate on finding their origin. We conclude that these stars with low Li abundance do not evolve from stars above the desert: at a given mass, stars with low Li (i.e., below the desert) are more metal-poor. Instead, we suggest that stars below the Li desert are consistent with having evolved from the Li dip, discarding the need to invoke additional mixing to explain this feature. Thus, stars below the Li desert are not peculiar and are only distinguished from other subgiants evolved from the Li dip in that their combination of atmospheric parameters locates them in a range of effective temperatures where otherwise only high Li abundance stars would be found (i.e., stars above the desert). 2018A&A...614A..55A https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/614/A55 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/A+A/363/239 : Lithium abundances in single giant stars (De Medeiros+, 2000) J/A+A/371/943 : Lithium abundances for 185 main-sequence stars (Chen+, 2001) J/A+A/409/251 : Li abundances and velocities in F and G stars (Mallik+, 2003) J/A+A/538/A36 : Lithium abundances of bulge RGB stars (Lebzelter+, 2012) J/ApJ/756/46 : Lithium abundances in HIP stars (Ramirez+, 2012) J/ApJ/785/94 : Lithium abundances of a large sample of red giants (Liu+, 2014) J/A+A/595/A18 : Lithium abundances in AMBRE stars (Guiglion+, 2016) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/614/A55 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/614/A55 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/614/A55 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/614/A55 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/614/A55 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/614/A55 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/614/A55/table1 (Atmospheric parameters and Li abundances for the 227 stars presented in this work) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/614/A55/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/614/A55/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/614/A55/table1? GET text/xml+votable 180.0 50000 true 2.1072731 6.6168028 0.005555555555555556 Cone search capability for table J/A+A/614/A55/table3 (Catalog of stellar parameters and Lithium abundances) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/614/A55/table3? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/614/A55/table3? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/614/A55/table3? GET text/xml+votable 180.0 50000 true 0.1680011 -69.675965 0.005555555555555556 6/49 62 75 95 120-121 137 200 215 222 254 311 313-314 322 324 377 414 417 431 488 517 618 634 684 706 719-720 727 742 748 752 798 871 890 934 946 953 987 1030 1043 1053 1058 1247 1260 1265 1296 1320 1330 1341 1576-1577 1597 1603-1604 1623 1642 1687 1719 1728 1775 1788 1808 1827-1828 1862 1875 1914 1937 1940 2032 2063 2072 2110 2152 2158 2169 2231 2261 2358 2366 2377 2416 2456 2472 2491 2493 2497 2524 2579 2622 2637 2650 2652 2658 2691 2696-2697 2703 2732 2777 2780 2818 2922 2953 2961 2984 3003 3020 3036 3044 3069 3083 3102 3118 3196 3307 3313 3344 3398 3435-3436 3444 3506 3572 3639 3642 3649 3663 3667 3691 3714 3718 3741 3766 3825 3876 3913 3919 3932 4028 4128 4136 4156 4206 4215 4225 4227 4244 4274 4313 4376 4413 4423 4428 4437 4468 4491 4528 4644 4661 4665 4735 4808 4854 4875 4881 4912 5009 5053 5061-5062 5065 5067 5073-5074 5082 5088 5101 5108 5118 5125 5147 5154 5160 5180 5195 5263 5266 5304 5308 5339 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45668-45669 45682 45687 45698 45706 45717 45721 45752 45754 45758 45792 45823 45827 45837 45853 45865 45873 45892 45902 45907 45917 45924 45941 45945 45948 45974 46019 46053 46056 46074 46076 46080 46084 46111-46112 46131 46135 46170 46172 46193 46203 46234 46247-46249 46271 46273-46274 46287 46297 46306 46320 46333 46352 46355 46357 46494 46511 46526 46529 46558-46559 46593 46639-46640 46646 46654 46664 46671 46681 46685 46687 46705 46713 46728 46734 46768 46776 46800 46805 46829 46843 46874 46936 46944 46956 46967 46971 46982-46983 46987 46997 47004 47020 47022 47030 47045 47061 47065 47073 47077 47137 47176 47184 47198 47212 47234 47253 47308 47364 47377 47387 47390 47407 47464 47510 47543 47550 47567 47575 47589-47590 47600 47629 47647 47655 47674 47712 47740 47791 47795 47858 47898 47903 47930 47942 47986 47997 48014 48022 48050 48065 48105 48113 48134 48143 48172 48177 48182 48205 48260 48282 48291 48310 48335 48345 48350 48355 48361-48362 48371 48373 48402 48450 48455 48478 48487 48490 48513 48519 48531 48545 48572 48581 48583 48607 48652 48664 48679 48705 48707 48721 48727 48731 48736 48749 48768 48792 48821 48846 48865 48870-48871 48882-48883 48943 48967 48980 49001 49010 49026 49028 49036 49042 49060 49064 49097 49114 49128 49147 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/614/A55?format=ascii default J/A+A/614/A55/table1 Atmospheric parameters and Li abundances for the 227 stars presented in this work recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int HIP HIP identifier (NNNNNN) meta.id;meta.main int m_HIP [AB] Multiplicity index on HIP identifier meta.code.multip char Teff [5686/6617] Effective temperature K phys.temperature.effective int e_Teff [20/85] Uncertainty in Teff K stat.error;phys.temperature.effective int logg [3.5/4.5] Log of the surface gravity logg log(cm.s**-2) phys.gravity float e_logg [0/0.12] Uncertainty in logg log(cm.s**-2) stat.error float [Fe/H] [-0.34/0.36] Metallicity [Fe/H] phys.abund.Z float e_[Fe/H] [0.03/0.16] Uncertainty in [Fe/H] stat.error;phys.abund.Fe float l_ALi Limit flag on A(Li) meta.code.error char ALi [0.5/3.51] Lithium abundance A(Li) phys.abund float e_ALi [0.01/0.07]? Uncertainty in A(Li) stat.error float nullable Simbad Simbad column added by the CDS meta.ref.url char _RA Right Ascension (J2000) from SIMBAD (not part of the original data) deg pos.eq.ra;meta.main _DE Declination (J2000) from SIMBAD (not part of the original data) deg pos.eq.dec;meta.main
J/A+A/614/A55/table3 Catalog of stellar parameters and Lithium abundances recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int HIP HIP identifier (NNNNNN) meta.id;meta.main int m_HIP [AB] Multiplicity index on HIP identifier meta.code.multip char Teff [4153/7165] Effective temperature K phys.temperature.effective int e_Teff [50/139] Uncertainty in Teff K stat.error;phys.temperature.effective int logg [3.43/4.74]? Log of the surface gravity log(cm.s**-2) phys.gravity float nullable e_logg [0/0.44] Uncertainty in logg log(cm.s**-2) stat.error float [Fe/H] [-2.3/0.62] Metallicity phys.abund.Z float e_[Fe/H] [0.04/0.31] Uncertainty in [Fe/H] stat.error;phys.abund.Fe float l_ALi Limit flag on A(Li) meta.code.error char ALi [-1.06/3.54] Lithium abundance A(Li) phys.abund float e_ALi [0/0.83]? Uncertainty in A(Li) stat.error float nullable Mass [0.57/1.87]? Star mass solMass phys.mass float nullable E_Mass ? Upper limit uncertainty in Mass solMass stat.error;stat.max float nullable e_Mass ? Lower limit uncertainty in Mass solMass stat.error;phys.mass float nullable Age [0.1/14.9]? Star age Gyr time.age float nullable E_Age [0/9.05]? Upper limit uncertainty in Age Gyr stat.error;stat.max float nullable e_Age [0/9.24]? Lower limit uncertainty in Age Gyr stat.error;time.age float nullable n_Age Age determination method: iso=isochrones, rot=rotation. meta.note char Pl [yes/no]? Known planet-host? meta.note char Source References (1) meta.ref char Simbad Simbad column added by the CDS meta.ref.url char _RA Right Ascension (J2000) from SIMBAD (not part of the original data) deg pos.eq.ra;meta.main _DE Declination (J2000) from SIMBAD (not part of the original data) deg pos.eq.dec;meta.main