Automated classification of HIP variables J/MNRAS/414/2602 ivo://CDS.VizieR/J/MNRAS/414/2602 doi:10.26093/cds/vizier.74142602 CDS Dubath P. Rimoldini L. Suveges M. Blomme J. Lopez M. Sarro L.M.,De Ridder J. Cuypers J. Guy L. Lecoeur I. Nienartowicz K. Jan A.,Beck M. Mowlavi N. De Cat P. Lebzelter T. Eyer L. 2024-07-14T20:15:01Z 2012-03-21T13:26:36Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr astronomical-models variable-stars morgan-keenan-classification We present an evaluation of the performance of an automated classification of the Hipparcos periodic variable stars into 26 types. The sub-sample with the most reliable variability types available in the literature is used to train supervised algorithms to characterize the type dependencies on a number of attributes. The most useful attributes evaluated with the random forest methodology include, in decreasing order of importance, the period, the amplitude, the V-I colour index, the absolute magnitude, the residual around the folded light-curve model, the magnitude distribution skewness and the amplitude of the second harmonic of the Fourier series model relative to that of the fundamental frequency. 2011MNRAS.414.2602D https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/414/2602 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/414/2602 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/414/2602 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/414/2602 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/414/2602 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/414/2602 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/414/2602 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/414/2602/var_class (Variability classification of the Hippacros stars: training set (table 3) and other Hipparcos stars (table4)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/414/2602/var_class? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/414/2602/var_class? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/414/2602/var_class? 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48918 48933 48999 49056 49123 49147 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/414/2602?format=ascii Optical default J/MNRAS/414/2602/var_class Variability classification of the Hippacros stars: training set (table 3) and other Hipparcos stars (table4) Simbad Simbad column added by the CDS char _RA Positions from HIP (right ascension part) deg pos.eq.ra;meta.main _DE Positions from HIP (declination part) deg pos.eq.dec;meta.main recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int n_HIP Simbad column added by the CDS meta.id char HIP HIP number meta.id int Type Type of variable meta.code;src.var char PType Predicted type (only in table4) meta.code;src.var char logP Period extracted with the Lomb-Scargle method [Log(Period)] log(d) time.period float logA Amplitude of the light-curve model [Log(Amplitude)] src.var.amplitude float V-I Mean V-I colour index [V-I] mag phot.color;em.opt.V;em.opt.I float Mhip Hipparcos absolute magnitude derived from the parallaxes neglecting interstellar absorption [M_Hipparcos_] (1) mag phys.magAbs float res/raw Median absolute of the residuals (obtained by subtracting model values from the raw light curve) divided by the Median Absolute Deviation (MAD) of the raw light-curve values around the median [Scatter:res/raw] stat.fit.residual float Skew Unbiased weighted skewness of the magnitude distribution [Skewness] stat.fit.param float log(1+A2/A1) Amplitude ratio between the second harmonic and the fundamental (plus one, to avoid negative values) [Log(1+A2/A1)] src.var.amplitude;arith.ratio float P2p/2P Sum of the squares of the magnitude differences between pairs of successive data points in the light curve folded around twice the period divided by the same quantity derived from the raw light curve [P2p scatter:2P/raw] stat.fit.param float P2p Median of the absolute values of the differences between successive magnitudes in the raw light curve normalized by the MAD around the median [P2p_scatter] meta.note float P90 The 90th percentile of the absolute residual values around the 2P model divided by the same quantity for the residuals around the P model. The 2P model is a model recomputed using twice the period value [Percentile90:2P/P] stat.fit.residual float Res Mean of the squared residuals around the model [Residual_scatter] % stat.fit.residual float Phase2 Phase of the second harmonic after setting the phase of the fundamental to zero [Phase2] (2) rad time.phase float P2P/P Median of the absolute values of the differences between successive magnitudes in the folded light curve normalized by the MAD around the median of the raw light curve [P2p_scatter:P/raw] stat.fit.param float Slope Sum of the square of the slopes of lines joining the data points before and after a number of selected outliers towards faint magnitude (e.g., data points during eclipses) [P2p_slope] (3) stat.fit.param float