J/A+A/531/A8ivo://CDS.VizieR/J/A+A/531/A8doi:10.26093/cds/vizier.35310008CDSJenkins J.S.Murgas F.Rojo P.Jones H.R.A.Day-Jones A.C.Jones M.I.,Clarke J.R.A.Ruiz M.T.Pinfield D.J.2018-11-07T10:38:38Z2011-05-30T09:37:41ZCDS support team

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

cds-question@unistra.frdwarf-starsm-starsradial-velocityIn this work we present chromospheric activity indices, kinematics, radial-velocities, and rotational velocities for more than 850 FGK-type dwarfs and subgiant stars in the southern hemisphere and test how best to calibrate and measure S -indices from echelle spectra. We measured our parameters using the high-resolution and high-S/N FEROS echelle spectra acquired for this purpose. Results. We confirm the bimodal distribution of chromospheric activities for such stars and highlight the role that the more active K-dwarfs play in biasing the number of active stars. We show that the age-activity relationship does appear to continue to ages older than the Sun if we simply compare main sequence stars and subgiant stars with an offset of around 2.5Gyr between the peaks of both distributions. Also we show evidence of an increased spin-down timescale for cool K dwarfs compared with earlier F and G type stars. We highlight that activities drawn from low-resolution spectra (R<2.500') significantly increase the rms scatter when calibrating onto common systems of measurements like the Mt. Wilson system. Also we show that older and widely used catalogues of activities in the south appear to be offset compared to more recent works at the ~0.1dex level in logR'HK through calibrator drift. In addition, we show how kinematics can be used to preselect inactive stars for future planet search projects. We see the well known trend between projected rotational velocity and activity, however we also find a correlation between kinematic space velocity and chromospheric activity. It appears that after the Vaughan-Preston gap there is a quick step function in the kinematic space motion towards a significantly broader spread in velocities. We speculate on reasons for this correlation and provide some model scenarios to describe the bimodal activity distribution through magnetic saturation, residual low level gas accretion, or accretion by the star of planets or planetesimals. Finally, we provide a new empirical measurement for the disk-heating law, using the latest age-activity relationships to reconstruct the age-velocity distribution for local disk stars. We find a value of 0.337+/-0.045 for the exponent of this power law, in excellent agreement with those found using isochrone fitting methods and with theoretical disk-heating models.2011A&A...531A...8Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/531/A8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/531/A8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/531/A8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/531/A8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/531/A8https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/531/A8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/531/A8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/531/A8/table4 (Stellar basic physical parameters, chromospheric indices, rotational velocities, radial velocities and kinematic UVW space velocities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/531/A8/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/531/A8/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/531/A8/table4?GETtext/xml+votable180.050000true0.2199-12.8290.0055555555555555566/13474 16414 16448 16476 16525 16533 16563 16569 16575 16622 16655 16665 16668 16678-16679 16693 16701 16750 16778 16853 16890 16983 16989 17011 17098 17107 17121 17180 17187 17203 17210 17219 17223 17234 17288 17307 17326 17370 17425 17447 17453 17455-17456 17460 17471 17478 17507 17523 17541 17552 17600 17607 17624 17637 17664 17671 17676 17712 17729 17731 17800 17936 17991 17993 17999 18090 18471 18541 18548 18597 18640 18743 18756 18764-18765 18784 18792 18838 18963 18967 19002-19003 19072 19076 19108 20496 20512 20556 20582 20586 20633 20674 20703 20746 20776 20842 20902 20914 21094 21114 21122 21177 21211 21213 21256 21270 21381 21482 21510 21600 21718 21732 21775 21779 21809 21906 22048 22545 22588 22602 22613 22630 22708 22723 22735 22771 22785 22793 22868 23044 23076 23084 23098 23103 23187 23190 24597 24618-24619 24633 24655 24664 24674 24702 24730 24734 24806 24841 24856 24871 24889 24898 24911 24921 24951 24975 24977 25014 25024 25032 25054 25064 25098-25099 25140 25160 25168 25171 25177 25183 25206 25217 25224-25225 25250 25267 25276-25277 25279 25282 25297 25339 25358 25378-25379 25405 25475 25484 25512 25555 25566 25584 25591 25635 25660 25697 25703 25709 25743 25751 25755 25766 25778 25795 25835 25904 25952 25998 26112 26115 26133-26134 26148 26157 26636 26654 26679 26682 26700 26707 26722 26745 26748-26749 26755 26759 26761 26764 26772 26783 26788 26796 26820 26823 26837 26873 26893 26915 26929 26942 26956 26978 26984 27012 27168 27181 27184 27188 27299 28703 28728 28762 28779 28891 28894 29043 29194 29280 29538 29866 30083 30092 30310 30720 30722 30762 30765 30776 30781 30783 30789 30867 30878 30919 30929 30970 31144 31362 31396 32854 32884 32900 32937 32979 32986 33029 33063 33067 33201 33236 33240 33243 33289 33311 33332 33349 33415 33439 33460 33495 33499 33512 33520 33579 33594 33598 33604 33646 33649 33660 33663 33701 33714 33731 33734 33764 33815 33835 33873 33885 33893 33907 33923-33924 33930 33945 33960 33991 33998 34010 34033 34042 34073 34087 34135 34148 34178 34212 34222 34306 34315 34325 34355 34387 34425 34427 34452 34582 34586 34599 34663 34671 34674 34676 34705 34743 34788 34793 34862 34869 34936 34971 34982 35000 35021 35034 35088 35109 35146 35223 35266 35278 35333 35358 35390 35452 35482 35497 35501 35546 35561 35597 35615 35628 35666 35668 35680 35726 35736 35739 35765 35811 35820 35827 35831 35839-35840 35857 35952 35970 36008 36012 36045 36141 36172 36195 36230 36233-36234 36315 36350 36378-36380 36388 36390 36392 36448 36463 36468 36517-36518 36527 36541 36557 36562 36566 36576 36582 36590 36626 36634 36658 36700 36713 36816 36866 36952 36954 36958 36969 36999 37040 37047 37070 37107 37121 37133 37140 37158 37160 37168-37169 37172 37175 37298 37307 37320 37363 37388 37418 37422 37438 37444 37449 37451 37473 37482 37484 37489 37515-37516 37553 37555 37565 37595 37613 37616 37627 37642 37695 37725 37763 37777 37797 37831 37870-37871 37946-37947 37955 37972 38035 38118 38127 38132 38159-38160 38162 38167 38229 38260 38324 38329 38341 38350-38351 38409 38415 38423 38452 38508 38525 38569 38592 38625-38626 38720 38742 38757 38779 38781 38821 38837 38856-38857 38860 38885 38905 38927 38936 38952 38971 38981 38986 38998 39003 39025 39031 39064 39071 39076 39090 39101 39114 39123 39137 39141-39142 39171 39184 39213 39230 39240 39256 39263 39299 39313 39321 39353 39361-39362 39399 39425 39433-39435 39441 39446 39463 39513 39516 39527 39529 39614 39616 39621 39623 39669 39688 39691 39711 39722 39725 39730 39733 39760 39763 39765 39797 39801 39813 39926 39948 39954 39977 39979 40012 40041 40080 40083 40110 40143 40149 40183 40188 40206 40226 40236 40247 40250 40255 40287 40362 40410 40447 40655 40661 40686-40687 40741 40794 40838 40893 40896 40929 40965 41211 41424 41446 41515 41555 41600 41611 41667 41701 41721 41875 41882-41883 41954 42044 42066 42115 42142-42143 42145 42197 42205 42212 42221 42224 42236 42290 42360 42377 42379 42415 42519 42527 42564 42570 42581 42794 42808 42834 42860 42892 42982 43047 43068 43104 43119 43124 43176 43193 43211 43242 43247 43249 43251 43268 43317 43336 43354 43375 43385 43387 43436 43448 43468 43538 43548 43552 43560 43578 43581 43589 43620 43644 43649 43657 43659 43676 43715 43758 43772 43774 43782 43787 43850 43854 43890 43906 43950 43954 43963 43969 44003 44017 44049 44188 44223 44474 44551 44576 44624 44652 44694 44730 44780 44802 44911 44935 44949 44982-44983 45021 45082 45112 45122 45171 45261 45273 45299 45302 45324 45343 45357 45393 45435 45443 45475 45482 45489 45505 45515 45594 45624 45646 45687 45848 45855 45914 45934 45949 46009 46017 46032 46039 46068 46071 46077 46097 46100 46118 46141 46170 46179 46186 46194 46197 46200 46203 46301 46364 46367 46381 46388 46394 46437 46443 46446 46484 46487 46524 46544 46569 46603 46662 46722 46724 46776 46784 46803 46830 46844 46895 46921 47093 47223 47398 47409 47580 47590 47715 47832 47842 47894 47985 47994 48042 48061 48082 48133 48238 48245-48246 48274 48327 48388 48402 48405 48421 48450 48487 48513 48530 48535 48658 48773 48870 48893 48980 49064 49108 491183.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/531/A8?format=asciidefaultJ/A+A/531/A8/table4Stellar basic physical parameters, chromospheric indices, rotational velocities, radial velocities and kinematic UVW space velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP numbermeta.idintB-VJohnson B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatVmagJohnson V magnitudemagphot.mag;em.opt.VfloatSMWMount Wilson activity S-indexphot.flux;arith.ratiofloate_SMW? rms uncertainty on SMWstat.errorfloatnullablelog(R'HK)Chromopspheric activity indexphot.flux;arith.ratiofloatvsini? Rotational velocitykm/sphys.veloc.rotatfloatnullableRV? Radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_RV? rms uncertainty on RVkm/sstat.errorfloatnullableUvel? U kinematic componentkm/sphys.veloc;pos.cartesian.xfloatnullablee_Uvel? rms uncertainty on Uvelkm/sstat.errorfloatnullableVvel? V kinematic componentkm/sphys.veloc;pos.cartesian.yfloatnullablee_Vvel? rms uncertainty on Vvelkm/sstat.errorfloatnullableWvel? W kinematic componentkm/sphys.veloc;pos.cartesian.zfloatnullablee_Wvel? rms uncertainty on Wvelkm/sstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from HIP2 (I/311) catalog (right ascension part)degpos.eq.ra;meta.main_DEPosition from HIP2 (I/311) catalog (declination part)degpos.eq.dec;meta.main