J/A+A/689/A32ivo://CDS.VizieR/J/A+A/689/A32doi:10.26093/cds/vizier.36890032CDSMignon L.Delfosse X.Bonfils X.Meunier N.Astudillo-Defru N.,Gaisne G.Forveille T.Bouchy F.Lo Curto G.Udry S.Segransan D.,Unger N.Lovis C.Santos N.C.Mayor M.2024-11-29T20:05:51Z2024-08-30T08:53:15ZCDS support team

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

cds-question@unistra.frmultiple-starsm-starsexoplanetsspectroscopyThe census of planets around M dwarfs in the solar neighbourhood meets two challenges: detecting the best targets for the future characterisation of planets with ELTs, and studying the statistics of planet occurrence that are crucial to formation scenarios. The radial velocity (RV) method remains the most appropriate for such a census as it is sensitive to the widest ranges of masses and periods. HARPS, mounted on the 3.6 m telescope at La Silla Observatory (ESO, Chile), has been obtaining velocity measurements since 2003, and can therefore be used to analyse a very large and homogeneous dataset. We performed a homogeneous analysis of the RV time series of 200 M dwarfs observed with HARPS from 2003 to 2019 (gathering more than 15000 spectra), with the aim of understanding detectable signals such as stellar and planetary companions and activity signals. The RVs were computed with a template matching method before carrying out the time series analysis. First, we focused on the systematic analysis of the presence of a dominant long-term pattern in the RV time series (linear or quadratic trend and sine function). Then, we analysed higher-frequency perdiodic signals using periodograms of the residual time series and Keplerian function fitting. We found long-term variability in 57 RV time series (28.5%). This led to the revision of the parameters of the massive planet (GJ 9482 b), as well as the detection of four substellar and stellar companions (around GJ 3307, GJ 4001, GJ 4254, and GJ 9588), for which we characterised inclinations and masses by combining RV and astrometry. The periodic analysis allowed us to recover 97% of the planetary systems already published in this sample, but also to propose three new planetary candidates orbiting GJ 300 (7.3M_{Earth}_), GJ 654(5M_{Earth}_), and GJ 739 (39M_{Earth}_), which require additional measurements before they can be confirmed.2024A&A...689A..32Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/689/A32CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/237 : Stellar Photometry in Johnson's 11-color systemJ/MNRAS/403/1949 : UBV(RcIc)JHK photometry of HIP nearby stars (Koen+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/689/A32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/689/A32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/689/A32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/689/A32https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/689/A32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/689/A32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/689/A32/tableb5 (Stellar properties of our 425 stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A32/tableb5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A32/tableb5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A32/tableb5?GETtext/xml+votable180.050000true72.3864597-14.78957360.0055555555555555566/22 30 115 131 186 297 309 546 4103 4144 4157 4250 4366 4444 4632 4672 8208 8240 8343 8355 8394 8440 8705 8733 8739 10278 12312 12359 12440 12865 16391 16462 16581 16635 16758 16825 16847 16910 16939 16945 16959 16993 17020 17058 17124 17253 17271 17348 17358 17455 17464 17486 17572 17838 17870 18195 18220 18440 18496 18553 18569 18666 18789 18802 18856 18913 19014 19064 19187 19265 19306 19352 19361 19466 19516 19559 19601 19668 19776 20023 20100 20109 20515 20896 21047 21050 21136 21151 21171 21180 21473 21512 21747-21748 21777 21953 22014 22040 22148 22222 22273 22277 22289 22309 22549 22575 22626 22636 22645 22700 22709 22787 22807 22813 22904 22959 22964 23010 23014 23047 23094 23137 23238 23363 23564 23718-23719 23731 23735 23743 24227 24713 24995 25009 25091 25125 25154 25192 25255 25306 25363 25388 25398 25426 25546 25865 25989 26022 26216 26279 26487 26495 26538 26555 26560 26563 26583 26757 26772 26821 26967 26972 27166 27201 27260 27289 27392 27459 27462 27484 27592 27730 27734 27799 27810 27849 27912 28928 28955 29146 29158 29170 29374 29458 29524 29665 29684 29738 29855 29961 30078 30132 30189 30387 30407 30429 30505 30522 30624 30626 30638 30735 30771 30833 30893 30978 31001 31010 31013-31014 31019 31031 31035 31191 31216 31229 31339 31686 31781 31787 31884 31986 32015 32033 32076 32259 32335 32854 33049 33211 33381 33403 33441 33545 33693 33702 33713 33758 33849 33930 33937 33966 34067 34181 34301 34437 34448 34479 34514 34680 34767 34816 34835 34924 34942 34955 35057 35154 35288 35301 35324-35325 35335 35366 35375 35388 35414 35499 35520 35534 35625 35670 35759 35818 35830 35856 35940 35950 35969 36483 36496 36583 36614 36658 36679 36710 36732 36763 36971 37023 37332 37379 37654 37803 37872 37942 38152 38247 38456 38464 38551 38675 38744 38820 38957 39027 39059 39242 39499 39585 39807 39829 40250 40283 40341 40359 40386 40430 40435-40436 40505 40513 40610 40801 40811 41252 41591 41660 42054 42101 42209 42216 42231 42255 42290 42314 42325 42429 42459 42485 42652 42784 42982 43001 43187 43203 43336 43569 43580 43723 43970 44257 44284 44541 44728 44866 44921 44936-44937 44967 45113 45118 45224 45269 45317 45322 45474 45497 45506 45543 45771 45954 45964 46128 46218 46275 46289 46351 46448 46566 46598-46599 46619 46632 46699 46718 46752 46776 46868 46922 47121 47158 47201 47337 47347 47414 47758 47953 48263 48274 48303 48485 48500 48516 48731 48902 48906 48926 48935 48958 48985 49015 49101 491257.952274030004205e-20 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/689/A32?format=asciidefaultJ/A+A/689/A32/tableb5Stellar properties of our 425 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharprimaryMassMass (1)solMassphys.massfloatSpTypeSpectral Typesrc.spTypecharDist? Distance from Gaia DR3pcpos.distancefloatnullableVmag? Simbad V magnitudemagphot.mag;em.opt.VfloatnullableKmagK magnitude (2)magphot.mag;em.IR.KfloatJmagJ magnitude (2)magphot.mag;em.IR.JfloatGmag? Gaia G magnitudemagphot.mag;em.optfloatnullableHmagH magnitude (2)magphot.mag;em.IR.HfloatplotShow the Radial Velocity curvesmeta.ref.urlcharRVDisplay the radial velocity values in table rvmeta.ref.urlcharSimbadSimbad 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.mainJ/A+A/689/A32/rvHARPS template-matching Radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharBJDBarycentric Julian Day (BJD-2400000)dtime.epochdoubleindexedRV? Radial velocity valuekm/sphys.veloc;pos.heliocentricdoublenullablee_RV? Radial velocity errorkm/sstat.errordoublenullablen_e_RV[I] I for infinitymeta.notechar