J/AJ/158/59ivo://CDS.VizieR/J/AJ/158/59doi:10.26093/cds/vizier.51580059CDSStuhr A.M.Feigelson E.D.Caceres G.A.Hartman J.D.2019-09-30T13:36:05Z2019-09-30T14:09:16ZCDS support team

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

cds-question@unistra.frvariable-starsexoplanetsphotometryastronomical-modelsSensitive signal processing methods are needed to detect transiting planets from ground-based photometric surveys. Caceres et al. (2019AJ....158...58C) show that the autoregressive planet search (ARPS) method - a combination of autoregressive integrated moving average (ARIMA) parametric modeling, a new transit comb filter (TCF) periodogram, and machine learning classification - is effective when applied to evenly spaced light curves from space-based missions. We investigate here whether ARIMA and TCF will be effective for ground-based survey light curves that are often sparsely sampled with high noise levels from atmospheric and instrumental conditions. The ARPS procedure is applied to selected light curves with strong planetary signals from the Kepler mission that have been altered to simulate the conditions of ground-based exoplanet surveys. Typical irregular cadence patterns are used from the Hungarian-made Automated Telescope Network-South (HATSouth) survey. We also evaluate recovery of known planets from HATSouth. Simulations test transit signal recovery as a function of cadence pattern and duration, stellar magnitude, planet orbital period, and transit depth. Detection rates improve for shorter periods and deeper transits. The study predicts that the ARPS methodology will detect planets with >~0.1% transit depth and periods ~<40 days in HATSouth stars brighter than ~15 mag. ARPS methodology is therefore promising for planet discovery from ground-based exoplanet surveys with sufficiently dense cadence patterns.2019AJ....158...59Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/59CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)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/146/113 : Differential griz photometry of HATS-3 (Bayliss+, 2013)J/AJ/147/144 : Differential griz photometry of HATS-5 (Zhou+, 2014)J/AJ/148/29 : Spectroscopy and differential photometry of HATS-4J/A+A/580/A63 : HATS-13b and HATS-14b light and RV curves (Mancini+, 2015)J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)J/AJ/150/33 : Photometry and spectroscopy of HATS-9 and HATS-10J/AJ/150/49 : Photometry and spectroscopy of HATS-8 (Bayliss+, 2015)J/ApJ/813/111 : Differential photometry of the K dwarf HATS-7 (Bakos+, 2015)J/AJ/151/89 : Spectroscopy and photometry of HATS-17 (Brahm+, 2016)J/AJ/152/88 : Spectroscopy and photometry of HATS-11 and HATS-12J/AJ/152/108 : i filter photometry for HATS-25 through HATS-30J/AJ/152/127 : Sloan i follow-up light curves of HATS-18 (Penev+, 2016)J/AJ/152/161 : Photometry for HATS-31 through HATS-35 (de Val-Borro+, 2016)J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+, 2018)J/AJ/158/58 : Autoregressive planet search for Kepler stars (Caceres+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/59https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/59http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/59https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/59https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/59http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/59GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/158/59/Kepler (Kepler stars with deep transits (table 1) and success rate of detecting Kepler planets using HATSouth cadences (table 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/59/Kepler?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/59/Kepler?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/59/Kepler?GETtext/xml+votable180.050000true292.872902841.06426560.005555555555555556Cone search capability for table J/AJ/158/59/HATSouth (HATSouth stars with confirmed planets (table 2) and their corresponding TCF S/N (table 6))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/59/HATSouth?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/59/HATSouth?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/59/HATSouth?GETtext/xml+votable180.050000true176.7390428-22.56300470.0055555555555555566/14567 14583 14584 14585 14591 14755 14756 14825 14826 14920 14923 14929 14933 15119 15122 15124 15129 15131 15141 15153 15160 15169 16534 17040 20872 21079 24752 24815 24858 29012 29017 34812 34848 34860 38644 40194 42001 43247 43541 43586 44672 44685 45766 47154 47167 47186 47307 47330 48082 48111 48117 48338 48353 48358 48729https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/158/59?format=asciidefaultJ/AJ/158/59/KeplerKepler stars with deep transits (table 1) and success rate of detecting Kepler planets using HATSouth cadences (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKIC[757450/11804465]? Kepler Input Catalog designationmeta.id.parentlongnullableprimaryKeplerKepler planet namemeta.id;meta.maincharmoreindicates data in Table 3 for this Kepler planetmeta.ref.urlcharDiscDiscovery referencemeta.bibcharBibcodeBibcode of the referencemeta.bib.bibcodecharPer[1.486/41.408]? Orbital perioddtime.periodfloatnullableDepth[5.57/36.9]? Transit depthmmagphys.absorption.opticalDepthfloatnullableKepmag[10.46/16.88]? Kepler magnitudemagphot.mag;em.optfloatnullablel_Thres[>] Limit flag on Thresmeta.code.errorcharThres[13.3/16]? Threshold magnitude (1)magphot.magfloatnullablePer4[51.847/143.206]? Orbital period (not in Table 1)dtime.periodfloatnullableDepth4[8.51/10.6]? Transit depth (not in Table 1)mmagphot.flux.density;arith.ratiofloatnullableSR[0/94] Success rate of detecting Kepler planet%stat.paramintSimbadSimbad 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/AJ/158/59/HATSouthHATSouth stars with confirmed planets (table 2) and their corresponding TCF S/N (table 6)mag[11.8/14.6] HATSouth magnitudemagphot.magfloatFr(NA)[0.65/0.95] NA fraction (1)meta.numberfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPlanetPlanet name (HATS-NNa)meta.id;meta.maincharDiscDiscovery referencemeta.bibcharBibcodeBibcode of the referencemeta.bib.bibcodecharPer[0.83784/16.2547] Orbital perioddtime.perioddoubleDepth[4.3/35.1] Transit depthmmagphys.absorption.opticalDepthfloatS/N[0.2/74.5]? Signal-to-noise ratio of the TCF peak (2)stat.snr;stat.maxfloatnullableSimbadSimbad 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/AJ/158/59/table3Transit comb filter (TCF) periodogram S/N ratios for simulated ground-based observations of 19 Kepler planetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKIC[757450/11804465] Kepler Input Catalog designationmeta.id;meta.mainlongmag[6/16]? Simulated magnitudemagphot.mag;meta.modelledintnullableNtr-8hr-1yr[4/85]? Number of transits in the simulated light curve (8 hr per day cadence, 1 yr light curve duration)meta.numberintnullableS/N-8hr-1yr[21/171]? Signal-to-noise ratio of the TCF periodogram peak, with a 8 hr per day cadence and 1 yr light curve duration (1)stat.snrintnullableNtr-16hr-1yr[6/151]? Number of transits in the simulated light curve (16 hr per day cadence, 1 yr light curve duration)meta.numberintnullableS/N-16hr-1yr[21/506]? Signal-to-noise ratio of the TCF periodogram peak, with a 16 hr per day cadence and 1 yr light curve duration (1)stat.snrintnullableNtr-24hr-1yr[8/218]? Number of transits in the simulated light curve (24 hr per day cadence, 1 yr light curve duration)meta.numberintnullableS/N-24hr-1yr[22/697]? Signal-to-noise ratio of the TCF periodogram peak, with a 24 hr per day cadence and 1 yr light curve duration (1)stat.snrintnullableNtr-8hr-4yr[14/341]? Number of transits in the simulated light curve (8 hr per day cadence, 4 yr light curve duration)meta.numberintnullableS/N-8hr-4yr[21/657]? Signal-to-noise ratio of the TCF periodogram peak, with a 8 hr per day cadence and 4 yr light curve duration (1)stat.snrintnullableNtr-16hr-4yr[27/620]? Number of transits in the simulated light curve (16 hr per day cadence, 4 yr light curve duration)meta.numberintnullableS/N-16hr-4yr[21/1798]? Signal-to-noise ratio of the TCF periodogram peak, with a 16 hr per day cadence and 4 yr light curve duration (1)stat.snrintnullableNtr-24hr-4yr[33/890]? Number of transits in the simulated light curve (24 hr per day cadence, 4 yr light curve duration)meta.numberintnullableS/N-24hr-4yr[21/2844]? Signal-to-noise ratio of the TCF periodogram peak, with a 24 hr per day cadence and 4 yr light curve duration (1)stat.snrintnullable