J/A+A/585/A5ivo://CDS.VizieR/J/A+A/585/A5doi:10.26093/cds/vizier.35850005CDSBonfanti A.Ortolani S.Nascimbeni V.2017-09-22T16:15:36Z2016-01-25T08:14:00ZCDS support team

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

cds-question@unistra.frstellar-evolutionary-modelsoptical-observationcatalogsstellar-evolutionary-trackseffective-temperaturestellar-agesstellar-massesTransiting planets around stars are discovered mostly through photometric surveys. Unlike radial velocity surveys, photometric surveys do not tend to target slow rotators, inactive or metal-rich stars. Nevertheless, we suspect that observational biases could also impact transiting-planet hosts. This paper aims to evaluate how selection effects reflect on the evolutionary stage of both a limited sample of transiting-planet host stars (TPH) and a wider sample of planet-hosting stars detected through radial velocity analysis. Then, thanks to uniform derivation of stellar ages, a homogeneous comparison between exoplanet hosts and field star age distributions is developed. Stellar parameters have been computed through our custom-developed isochrone placement algorithm, according to Padova evolutionary models. The notable aspects of our algorithm include the treatment of element diffusion, activity checks in terms of logR'_HK_ and vsini, and the evaluation of the stellar evolutionary speed in the Hertzsprung-Russel diagram in order to better constrain age. Working with TPH, the observational stellar mean density {rho}_*_ allows us to compute stellar luminosity even if the distance is not available, by combining {rho}_* with the spectroscopic logg. The median value of the TPH ages is ~5Gyr. Even if this sample is not very large, however the result is very similar to what we found for the sample of spectroscopic hosts, whose modal and median values are [3, 3.5)Gyr and ~4.8Gyr, respectively. Thus, these stellar samples suffer almost the same selection effects. An analysis of MS stars of the solar neighbourhood belonging to the same spectral types bring to an age distribution similar to the previous ones and centered around solar age value. Therefore, the age of our Sun is consistent with the age distribution of solar neighbourhood stars with spectral types from late F to early K, regardless of whether they harbour planets or not. We considered the possibility that our selected samples are older than the average disc population.2016A&A...585A...5Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/585/A5CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/585/A5https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/585/A5http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/585/A5https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/585/A5https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/585/A5http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/585/A5GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/585/A5/tablea1 (Isochronal parameters of planet-hosting stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/585/A5/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/585/A5/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/585/A5/tablea1?GETtext/xml+votable180.050000true185.179277217.79287030.0055555555555555566/311 431 679 725 748 876 1544 1597 2110 2152 2416 2497 2577 2971 3344 3536 3663 3876 3979 4136 4285 4429 4441 4528 4881 5009 5067 5309 5488 5556 5572 5667 5718 5730 5815 6006 6017 6381 6539 6638 6760 6791 6821 6831 7136 7208 7240 7746 8237 8357 8478 8785 8825 8843 9173 9350 9459 9483 9524 9662 9753 9843 9893 10079 10278 10407 10953 11087 11352 11589 11910 12024 12030 12056 12186 12306 12424 12482 12502 12612 12644 12899 12983 13143 13643 13808 14412 14419 14434 14466 14516 14525 14548 14825 14896 14914 14918 14968 15029 15129 15131 15143 15174 15218 15273 15550 15950 16035 16432 16627 16652 16707 17172 17226 17266 17341 17496 17587 17641 17730-17731 17764 17954 18028 18172 18441 18510 18614 18688 18747 18821 18835 18943 18953 19619 19669 19815 19904 19912 20072 20116 20145 20382 20557 20582 20746 20886 21003 21223 21326 21406 21531 21838 21906 22036 22078 22168-22169 22252 22505 22590 22654 22837 22878 23030 23201 23322 23414 23646 23681 24019 24178 24831 24924 25114 25132 25153 25401 25446 25885 25939 25950 26019 26062 26183 26242 26575 26707 26771 26901 26938 26978 26997 27018 27060 27088 27164 27220 27616 27682 27750 27881 27975 28044 28085 28130 28274 28400 28571 28763 28767 29513 29541 30015 30170 30278 30378 30419 30526 30707 30770 31494 31606 31813 31860 31874 32501 32509 32561 32749 32848 33042 33182 33243 33258 33377 33430 33456 33510 33630 33813 33923 33974 34446 34773 34905 34951 35210 35362 35415 35442 35532 35907 35954 35968 36092 36506 37018 37461 37573 37954-37955 38162 38238 38414 38452 38461 38545 38728 38807 38998 39257 39280 39364 39646 39926 40066 40101 40143 40400 40442 40692 41058 41432 41446 41607 41724 42044 42221 42248 42281 42318 42333 42386 42510 42760 42934 43012 43228 43374 43639 43677 43775 43813 43818 43911 43960 44243 44398 44648 44740 45364 45717 45865 46111 46215 46306 46421 46437 46800 46843 46967 47550 47590 47930 48105 48108-48109 48402 48519 48530 48545 48652https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/585/A5?format=asciiOpticaldefaultJ/A+A/585/A5/tablea1Isochronal parameters of planet-hosting starsNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAgeStellar ageGyrtime.agefloate_AgeUncertainty on ageGyrstat.error;time.agefloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffUncertainty on TeffKstat.error;phys.temperature.effectiveintLLuminositysolLumphys.luminositydoublee_LUncertainty on LsolLumstat.errorfloatMMasssolMassphys.massfloate_MUncertainty on MsolMassstat.errorfloatloggLogarithm of surface gravitylog(cm.s**-2)phys.gravityfloate_loggUncertainty on logglog(cm.s**-2)stat.errorfloatRadRadiussolRadphys.size.radiusfloate_RadUncertainty on RadsolRadstat.errorfloatBin[0,1]? Flag on stellar multiplicity (1)meta.codeintnullableTr[0,1]? Flag on planet detection through transit method (2)meta.codeintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_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