J/AJ/152/164ivo://CDS.VizieR/J/AJ/152/164doi:10.26093/cds/vizier.51520164CDSHe S.Yuan W.Huang J.Z.Long J.Macri L.M.2018-03-28T09:31:16Z2017-02-22T12:28:28ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsinfrared-photometryvisible-astronomyphotometryWe develop a nonlinear semi-parametric Gaussian process model to estimate periods of Miras with sparsely sampled light curves. The model uses a sinusoidal basis for the periodic variation and a Gaussian process for the stochastic changes. We use maximum likelihood to estimate the period and the parameters of the Gaussian process, while integrating out the effects of other nuisance parameters in the model with respect to a suitable prior distribution obtained from earlier studies. Since the likelihood is highly multimodal for period, we implement a hybrid method that applies the quasi-Newton algorithm for Gaussian process parameters and search the period/frequency parameter space over a dense grid. A large-scale, high-fidelity simulation is conducted to mimic the sampling quality of Mira light curves obtained by the M33 Synoptic Stellar Survey. The simulated data set is publicly available and can serve as a testbed for future evaluation of different period estimation methods. The semi-parametric model outperforms an existing algorithm on this simulated test data set as measured by period recovery rate and quality of the resulting period-luminosity relations.2016AJ....152..164Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/152/164CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/149/117 : LMC infrared survey. I. Photometry of Cepheids (Macri+, 2015)J/ApJS/193/26 : The M33 synoptic stellar survey. I. (Pellerin+, 2011)J/AcA/59/239 : Light curves of LMC long-period variables (Soszynski+, 2009)J/AJ/130/776 : Secular evolution in Mira pulsations (Templeton+, 2005)J/MNRAS/353/705 : OGLE Variables in Magellanic Clouds (Ita+, 2004)J/AJ/121/861 : BVI photometry of central part of M33 (Macri+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/152/164https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/152/164http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/152/164https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/152/164https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/152/164http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/152/164GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/152/164/table2 (*OGLE LMC Miras from Soszynski et al. 2009 (Cat. J/AcA/59/239))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/152/164/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/152/164/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/152/164/table2?GETtext/xml+votable180.050000true67.6873333-69.84472220.0055555555555555564/2068 5/8263 8269 8280 6/33045 33046 33047 33051 33069 33073 33074 33075 33080 33081 33084 33085 33104 33105 33106 33112 33124 33125 33126 33128 33129 33130 37416 37418 37504 37506 37507 37512 37514 37515 37536https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/152/164?format=asciiInfraredOpticaldefaultJ/AJ/152/164/table2*OGLE LMC Miras from Soszynski et al. 2009 (Cat. J/AcA/59/239)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[82/91878] OGLE LMC Mira identification number (OGLE-LMC-LPV-NNNNN) from Soszynski et al. 2009 (Cat. J/AcA/59/239)meta.id;meta.mainintNlcNumber of simulated I-band light curvesmeta.numberintnullableTypeSpectral type Oxygen-rich or Carbon-richsrc.classchar<Imag>[12.178/15.25] Mean I-band magnitudemagphot.mag;em.opt.Ifloat<Vmag>[15.101/21.472] Mean V-band magnitudemagphot.mag;em.opt.Vfloatf_<Vmag>[1] Extrapolated mean V magnitude for object with missing data (identified with a "1")meta.codecharPer[103.06/1265] Main perioddtime.period;meta.mainfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from Soszynski et al. 2009 (Cat. J/AcA/59/239) (right ascension part)degpos.eq.ra;meta.main_DEPosition from Soszynski et al. 2009 (Cat. J/AcA/59/239) (declination part)degpos.eq.dec;meta.mainJ/AJ/152/164/lcMapping between simulated light curve ID and the original OGLE objectrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCNum[1/100000] Light curve identification numbermeta.idintStar[82/91878] OGLE LMC Mira identification number from Soszynski et al. 2009 (Cat. J/AcA/59/239)meta.id;meta.mainintCodeLight curve internal codemeta.codecharLCLight Curvemeta.ref.urlchar