J/AJ/160/222ivo://CDS.VizieR/J/AJ/160/222doi:10.26093/cds/vizier.51600222CDSJordan A.Bakos G.A.Bayliss D.Bento J.Bhatti W.Brahm R.Csubry Z.,Espinoza N.Hartman J.D.Henning T.Mancini L.Penev K.Rabus M.,Sarkis P.Suc V.de Val-Borro M.Zhou G.Butler R.P.Teske J.,Crane J.Shectman S.Tan T.G.Thompson I.Wallace J.J.Lazar J.,Papp I.Sari P.2022-09-30T21:50:11Z2021-02-08T12:26:14ZCDS support team

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

cds-question@unistra.frexoplanetsmultiple-starsradial-velocityinfrared-photometryvisible-astronomyphotometryspectroscopyWe report the discovery of two transiting Neptunes by the HATSouth survey. The planet HATS-37Ab has a mass of 0.099{+/-}0.042M_Jup_ (31.5{+/-}13.4M{Earth}) and a radius of 0.606{+/-}0.016R_Jup_, and is on a P=4.3315day orbit around a V=12.266{+/-}0.030mag, 0.843_-0.012_^+0.017^M{odot} star with a radius of 0.877_-0.012_^+0.019^R{odot}. We also present evidence that the star HATS-37A has an unresolved stellar companion HATS-37B, with a photometrically estimated mass of 0.654{+/-}0.033M{odot}. The planet HATS-38b has a mass of 0.074{+/-}0.011M_Jup_ (23.5{+/-}3.5M{Earth}) and a radius of 0.614{+/-}0.017R_Jup_, and is on a P=4.3750day orbit around a V=12.411{+/-}0.030mag, 0.890_-0.012_^+0.016^M{odot} star with a radius of 1.105{+/-}0.016 R{odot}. Both systems appear to be old, with isochrone-based ages of 11.46_-1.45_^+0.79^Gyr, and 11.89{+/-}0.60Gyr, respectively. Both HATS-37Ab and HATS-38b lie in the Neptune desert and are thus examples of a population with a low occurrence rate. They are also among the lowest-mass planets found from ground-based wide-field surveys to date.2020AJ....160..222Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/222CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/A+A/428/1001 : Non-linear limb-darkening law for LTE modelsIII. (Claret,2004)J/ApJ/710/1724 : Follow-up photometry for HAT-P-11 (Bakos+, 2010)J/ApJ/728/138 : Follow-up photometry of HAT-P-26 (Hartman+, 2011)J/A+A/546/A14 : Limb-darkening for CoRoT, Kepler, Spitzer (Claret+, 2012)J/AJ/146/113 : Differential griz photometry of HATS-3 (Bayliss+, 2013)J/A+A/552/A16 : Limb-darkening for CoRoT, Kepler, Spitzer. II. (Claret+, 2013)J/A+A/558/A55 : HATS-2b griz light curves (Mohler-Fischer+, 2013)J/AJ/145/5 : Follow-up photometry of HATS-1 (Penev+, 2013)J/AJ/148/29 : Spectro. and differential photometry of HATS-4 (Jordan+,2014)J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)J/AJ/152/108 : i filter photom. for HATS-25 through HATS-30 (Espinoza+, 2016)J/AJ/152/88 : Spectroscopy & photometry of HATS-11 & HATS-12 (Rabus+, 2016)J/A+A/618/A20 : Limb-darkening for TESS, Kepler, Corot, MOST (Claret, 2018)J/AJ/155/255 : Radial velocity & activity measur. of HAT-P-11 (Yee+, 2018)J/AJ/156/259 : Robo-AO detected close binaries in Gaia DR2 (Ziegler+, 2018)J/AJ/157/55 : RVs and light curves for HATS-60-HATS-69 (Hartman+, 2019)J/AJ/159/267 : Observations & radial velocity of HATS-71b (Bakos+, 2020)http://pestobservatory.com/ : Perth Exoplanet Survey Telescope homepagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/222https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/222http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/222https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/222https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/222http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/222GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/160/222/table1 (Summary of photometric observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/222/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/222/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/222/table1?GETtext/xml+votable180.050000true199.8019319-22.98686970.005555555555555556Cone search capability for table J/AJ/160/222/table2 (Summary of spectroscopy observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/160/222/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/160/222/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/160/222/table2?GETtext/xml+votable180.050000true199.8019319-22.98686970.0055555555555555566/38883 44015https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/160/222?format=asciiOpticalInfrareddefaultJ/AJ/160/222/table1Summary of photometric observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar identificationmeta.id;meta.maincharInstInstrument used (1)instr.setupcharFieldField covered (2)meta.id;obs.fieldcharObs-bBeginning of observation, year, month and daytime.epochcharObs-eEnd of the observation, year and monthtime.epochcharNobs[82/8718] Number of imagesmeta.numberintCad[104/1232] Imaging cadence (3)sem.freqintFiltFilter used; Rc, i, i' or rinstr.setup;instr.filtercharrms[0.8/15.7] Residual from the best-fit modelmmagstat.fit.residualfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/160/222/table3Light curve data for HATS-37 and HATS-38IDStar identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2455644/2458215] Barycentric Julian Date (1)dtime.epochdoubleindexedmag[-0.04/12.5] Observed magnitude in Filter (2)magphot.magdoublee_mag[0.0004/0.03] Uncertainty in magmagstat.error;phot.magdoubleOmag[-0.05879/12.0802]? Original magnitude in Filter (3)magphot.magdoublenullableFiltFilter used; r, Rc or iinstr.setupcharInstInstrument used (4)instr.setupcharJ/AJ/160/222/table2Summary of spectroscopy observationsInstInstrument usedinstr.setupcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar identificationmeta.id;meta.maincharObs-bBeginning of the observation, year, month and daytime.epochcharObs-eEnd of the observation, year, month and daytime.epochcharNobs[1/18] Number of spectrameta.numberintR[3/115] Resolution ({Delta}{lambda}/{lambda}/1000)spect.resolutionintS/Nmin[17/38]? Minimum Signal-to-Noise ratio near 5180{AA}stat.snr;stat.minintnullableS/Nmax[20/72]? Maximum Signal-to-Noise ratio near 5180{AA}stat.snr;stat.maxintnullableRVel[4.13/8.2]? Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatnullableRVelprec[5.7/4000]? Precision for RVel (2)m/sinstr.precisionfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/160/222/table4Relative radial velocities and bisector spans for HATS-37 and HATS-38recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar identifiermeta.id;meta.maincharBJD[2457505/2457891] Barycentric Julian Date; BJD-2450000dtime.epochdoubleRVel[-43.4/50.3]? Radial velocity (1)m/sphys.veloc;pos.heliocentricfloatnullablee_RVel[2.71/15.0]? Uncertainty in RVel (2)m/sstat.error;spect.dopplerVelocfloatnullableBS[-130.4/125] Bisector spanm/sphys.velocfloate_BS[5/40.4] Uncertainty in BSm/sstat.errorfloatPhase[0.108/0.917] Orbital phasetime.phasedoubleInstInstrument; FEROS, HARPS or PFSinstrchar