J/ApJS/240/17ivo://CDS.VizieR/J/ApJS/240/17doi:10.26093/cds/vizier.22400017CDSZhang H.Yu Z.Liang E.Yang M.Ashley M.C.B.Cui X.Du F.Fu J.,Gong X.Gu B.Hu YiJiang P.Liu H.Lawrence J.Liu Q.Li X.Li Z.,Ma B.Mould J.Shang Z.Suntzeff N.B.Tao C.Tian Q.Tinney C.G.,Uddin S.A.Wang L.Wang S.Wang X.Wei P.Wright D.Wu X.,Wittenmyer R.A.Xu L.Yang S.-H.Yu CeYuan X.Zheng J.Zhou H.,Zhou J.-L.Zhu Z.2026-03-27T20:06:19Z2019-06-06T14:51:27ZCDS support team

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

cds-question@unistra.frexoplanetsvisible-astronomysloan-photometrysurveysmultiple-starsstellar-radiiWe report first results from the CHinese Exoplanet Searching Program from Antarctica (CHESPA)--a wide-field high-resolution photometric survey for transiting exoplanets carried out using telescopes of the AST3 (Antarctic Survey Telescopes times 3) project. There are now three telescopes (AST3-I, AST3-II, and CSTAR-II) operating at Dome A --the highest point on the Antarctic Plateau-- in a fully automatic and remote mode to exploit the superb observing conditions of the site, and its long and uninterrupted polar nights. The search for transiting exoplanets is one of the key projects for AST3. During the austral winters of 2016 and 2017 we used the AST3-II telescope to survey a set of target fields near the southern ecliptic pole, falling within the continuous viewing zone of the TESS mission. The first data release of the 2016 data, including images, catalogs, and light curves of 26578 bright stars (7.5<=m_i_<=15), was presented in Zhang+ (2018, J/ApJS/240/16). The best precision, as measured by the rms of the light curves at the optimum magnitude of the survey (m_i_=10), is around 2mmag. We detect 222 objects with plausible transit signals from these data, 116 of which are plausible transiting exoplanet candidates according to their stellar properties as given by the TESS Input Catalog, Gaia DR2, and TESS-HERMES spectroscopy. With the first data release from TESS expected in late 2018, this candidate list will be timely for improving the rejection of potential false-positives.2019ApJS..240...17Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/240/17CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/278 : Transits observed in OGLE 2001-2003 (Udalski+, 2002-2004)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/MNRAS/372/1117 : SuperWASP exoplanetary transit survey (Christian+, 2006)J/MNRAS/381/851 : SuperWASP-North extrasolar planet cand. (Clarkson+, 2007)J/MNRAS/379/647 : SuperWASP-North extrasolar planet candidates (Lister+, 2007)J/MNRAS/379/816 : SuperWASP-North extrasolar planet candidates (Street+, 2007)J/MNRAS/384/1097 : SuperWASP-North extrasolar planet candidates (Kane+, 2008)J/PASP/122/347 : Chinese Small Telescope ARray (CSTAR) (Zhou+, 2010)J/AJ/142/155 : Variable stars photometry from Dome A (Wang+, 2011)J/AJ/151/166 : Flares & variables from 2009-2010 CSTAR (Oelkers+, 2016)J/AJ/153/104 : Variables observed in Galactic disk by AST3-1 (Wang+, 2017)J/ApJS/240/16 : Exoplanets in Antarctic sky. I. AST3-II DR1 (Zhang+, 2019)http://www.physics.usyd.edu.au/tess-hermes/ : TESS-HERMES home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/240/17https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/240/17http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/240/17https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/240/17https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/240/17http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/240/17GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/240/17/cand (Fitted parameters and stellar properties of exoplanet candidates from AST3-II observations in 2016 (tables 2 and 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/240/17/cand?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/240/17/cand?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/240/17/cand?GETtext/xml+votable180.050000true111.6612-69.57630.0055555555555555564/2338 5/9347-9348 9356-9358 9376-9378 6/37051 37054 37387 37396 37398-37401 37403-37404 37406-37407 37436 37516 37520 375362.0295717354549139e-19 2.9552336544269426e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/240/17?format=asciiOpticaldefaultJ/ApJS/240/17/candFitted parameters and stellar properties of exoplanet candidates from AST3-II observations in 2016 (tables 2 and 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Target right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Target declination (J2000)degpos.eq.dec;meta.mainimag[7.5/15.4] APASS/Sloan i-band AB magnitudemagphot.mag;em.opt.IfloatEpoch[1477.6/1530.3] Epoch; JD-2456000dtime.epochdoublePer[0.2/6] Observed period of transit signaldstat.snr;time.periodfloatdmag[0.002/0.07] Transit depth in Sloan i-band magnitudemagsrc.var.amplitudefloatTdur[0.3/6.3] Observed transit durationhtime.durationfloatSRN[5/22.1] Signal-to-Red-Noise-Ratio of the transit eventstat.snrfloatRp/R*[0.03/0.3] Ratio, planet fitted radius to host star radius (1)phys.size;arith.ratiofloata/R*[1.5/27.6] Ratio, planet fitted semi-major axis to host star radiusphys.size;arith.ratiofloatInc[86.9/93.1] Fitted inclinationdegsrc.orbital.inclinationfloateta[0.4/1.8] Ratio, observed transit duration to the theoretical duration: {eta}=T_dur_/T_theory_stat.fit.residualfloatLabelLabel(s) (G1)src.classcharTIC[41087772/453098052]? TESS Input Catalog ID (1)meta.id.crosslongnullableFlag[0/1] CTL flag (1= also present in the Candidate Target List of TESS) (1)meta.code.errorintGaia? Gaia DR2 identifier (2)meta.id.crossnullableTmag[6.5/14]? TESS magnitude (1)magphot.mag;em.optfloatnullablerpmag[6.5/14.1]? Gaia RP magnitude (2)magphot.mag;em.opt.RfloatnullableR*tic[0.1/23.1]? Stellar radii, TESS input catalog (1)solRadmeta.id;meta.mainfloatnullableR*gaia[0.5/105]? Stellar radius, Gaia DR2 (2)solRadphys.size.radiusfloatnullableR*her[0.4/100.5]? Stellar radius, TESS-HERMES survey (3)solRadphys.size.radiusfloatnullableM*tic[0.1/2.4]? Stellar mass, TESS Input Catalog (1)solMassphys.massfloatnullablePapIDisplay the LC data from Paper I (Zhang+, 2018, J/ApJS/240/16)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar