J/AJ/150/49ivo://CDS.VizieR/J/AJ/150/49doi:10.26093/cds/vizier.51500049CDSBayliss D.Hartman J.D.Bakos G.A.Penev K.Zhou G.Brahm R.,Rabus M.Jordan A.Mancini L.de Val-Borro M.Bhatti W.Espinoza N.,Csubry Z.Howard A.W.Fulton B.J.Buchhave L.A.Henning T.Schmidt B.,Ciceri S.Noyes R.W.Isaacson H.Marcy G.W.Suc V.Lazar J.Papp I.,Sari P.2017-06-26T11:49:08Z2015-11-27T12:07:45ZCDS support team

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

cds-question@unistra.frsolar-system-planetsmultiple-starsphotometryradial-velocitydwarf-starsg-starsHATS-8b is a low density transiting super-Neptune discovered as part of the HATSouth project. The planet orbits its solar-like G-dwarf host (V=14.03+/-0.10, T_eff_=50K) with a period of 3.5839days. HATS-8b is the third lowest-mass transiting exoplanet to be discovered from a wide-field ground-based search, and with a mass of 0.138+/0.019M_J_ it is approximately halfway between the masses of Neptune and Saturn. However, HATS-8b has a radius of 0.873^+0.123^_-0.075_, resulting in a bulk density of just 0.259+/-0.091g/cm3. The metallicity of the host star is super-solar ([Fe/H]=0.210+/-0.080), providing evidence against the idea that low-density exoplanets form from metal-poor environments. The low density and large radius of HATS-8b results in an atmospheric scale height of almost 1000km, and in addition to this there is an excellent reference star of nearly equal magnitude at just 19'' separation in the sky. These factors make HATS-8b an exciting target for future atmospheric characterization studies, particularly for long-slit transmission spectroscopy.2015AJ....150...49Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/150/49CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/150/33 : Photometry + spectroscopy of HATS-9 and HATS-10 (Brahm+, 2015)J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)J/AJ/145/5 : Follow-up photometry of HATS-1 (Penev+, 2013)J/AJ/144/139 : HAT-P-39, HAT-P-40, and HAT-P-41 follow-up (Hartman+, 2012)J/ApJ/742/59 : HAT-P-32 and HAT-P-33 follow-up (Hartman+, 2011)J/ApJ/728/138 : Follow-up photometry of HAT-P-26 (Hartman+, 2011)J/ApJ/726/52 : HAT-P-18 and HAT-P-19 follow-up (Hartman+, 2011)J/ApJ/710/1724 : Follow-up photometry for HAT-P-11 (Bakos+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/150/49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/150/49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/150/49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/150/49https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/150/49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/150/49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/150/49/table2Differential photometry of HATS-8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD-2400000)dtime.epochdoubleDmag[-0.06/0.05] Differential magnitude in Filter (1)magphot.mag;arith.diffdoublee_Dmag[0/0.08] Uncertainty in Dmagmagstat.error;phot.mag;arith.diffdoubleomag[3/15]? Original magnitude in Filter (2)magphot.magdoublenullableFlt[ri] Filter used in observation (Sloan-r or i)instr.setup;obscharInstInstrument used to obtain data (HS=HATSouth, LCOGT1m/Sinistro, Swope/E2V, Swope/SiTe3) (3)instr.setupcharJ/AJ/150/49/table4Relative radial velocities and bisector span measurements of HATS-8Phase[0.2/0.9] Phasetime.phasefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD-2456000)dtime.epochdoubleRV[-25.1/17.4] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RV[5.6/12.7] 1{sigma} uncertainty in RVm/sstat.errorfloatBS[-14.8/10]? Bissector Spanm/sphys.velocfloatnullablee_BS[5.5/16.4]? 1{sigma} uncertainty in BSm/sstat.errorfloatnullableInstInstrument (High Resolution Echelle Spectrometer (HIRES) on Keck I in Hawaii)meta.id;instrchar