A first catalog of variable stars measured by ATLAS

A first catalog of variable stars measured by ATLASJ/AJ/156/241ivo://CDS.VizieR/J/AJ/156/241doi:10.26093/cds/vizier.51560241CDSHeinze A.N.Tonry J.L.Denneau L.Flewelling H.Stalder B.Rest A.,Smith K.W.Smartt S.J.Weiland H.2021-10-11T06:59:44Z2019-05-31T14:23:21ZCDS support team

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

cds-question@unistra.frvariable-starseclipsing-binary-starsphotometryvisible-astronomystellar-distancesloan-photometrysurveysThe Asteroid Terrestrial-impact Last Alert System (ATLAS) carries out its primary planetary defense mission by surveying about 13000 deg^2^ at least four times per night. The resulting data set is useful for the discovery of variable stars to a magnitude limit fainter than r~18, with amplitudes down to 0.02 mag for bright objects. Here, we present a Data Release One catalog of variable stars based on analyzing the light curves of 142 million stars that were measured at least 100 times in the first two years of ATLAS operations. Using a Lomb-Scargle periodogram and other variability metrics, we identify 4.7 million candidate variables. Through the Space Telescope Science Institute, we publicly release light curves for all of them, together with a vector of 169 classification features for each star. We do this at the level of unconfirmed candidate variables in order to provide the community with a large set of homogeneously analyzed photometry and to avoid pre-judging which types of objects others may find most interesting. We use machine learning to classify the candidates into 15 different broad categories based on light-curve morphology. About 10% (427000 stars) pass extensive tests designed to screen out spurious variability detections: we label these as "probable" variables. Of these, 214000 receive specific classifications as eclipsing binaries, pulsating, Mira-type, or sinusoidal variables: these are the "classified" variables. New discoveries among the probable variables number 315000, while 141000 of the classified variables are new, including about 10400 pulsating variables, 2060 Mira stars, and 74700 eclipsing binaries.2018AJ....156..241Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/241CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)II/250 : Combined General Catalogue of Variable Stars (Samus+ 2004)B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)II/337 : VISTA Variables in the Via Lactea Survey DR1 (Saito+, 2012)II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)J/AcA/48/35 : All Sky Automated Survey variable stars (Pojmamski 1998)J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)J/AcA/52/129 : DIA OGLE2 candidate variable stars catalog (Wozniak+, 2002)J/AcA/59/33 : ASAS. Variable stars catalog in Kepler field.J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)J/AJ/150/107 : Variable stars from TNTS. I. 2012-2014 (Yao+, 2015)J/AJ/151/110 : BEST-II catalog of variables: CoRoT SRc02 fieldJ/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)J/AJ/156/204 : BEST-II catalog of variables. III. Puppis fieldJ/ApJS/237/28 : WISE catalog of periodic variable stars (Chen+, 2018)http://mastweb.stsci.edu/ps1casjobs : Pan-STARRS1 DR1 database, allowing tohttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/241https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/241http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/241https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/241https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/241http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/241GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/241/table4 (*ATLAS catalog of candidate variable stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/241/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/241/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/241/table4?GETtext/xml+votable180.050000true108.63314-13.386610.0055555555555555561/0-1 4-6 8 10 12 14 18-19 21-23 25-27 29-31 2/8-10 28 36-38 44 52-54 65-70 81-83 97-99 115 141-143 157-159 173-175 189 191 3/44-46 48-50 116 118 120 156-158 180 184 220-222 240-242 259 284 286-287 321-323 385-387 453-455 457-459 541-543 559 563 605-607 621-623 627 671 685-687 689-691 735 755 761-763 4/188 204 208-209 212-214 217 220 222-224 245 468 470 485 487-490 492-493 495-496 498-499 504-505 636-638 728 740-742 744 892 972 976 992 994 1035 1140-1142 1283 1539 1807 1811 1827 2143 2163 2230-2231 2245-2247 2249-2251 2399 2419 2479 2483 2499 2502-2503 2505 2507 2671 2680 2682-2683 2719 2735 2739 2755 2935 2939 3007 3015 3043 5/756-758 760 762 820-822 824-826 831 840-842 845-847 860-862 864 867 872-873 875-878 884 886 900-902 904-906 914-916 919 964 966 970 973 977-978 988 1008 1876 1887 1905-1908 1912-1913 1915-1918 1936-1938 1944 1946-1947 1964-1966 1976-1977 1988-1989 1991 2000 2002 2012 2026-2028 2032 2556-2558 2896-2898 2900 2904 2916 2919-2920 2972-2974 2980 2984 2991 2995 3010 3041 3572-3574 3576-3578 3892-3894 3896-3898 3908-3910 3912-3914 3937 3972-3974 3980 3982 3984 4002 4113 4115-4118 4122-4123 4125-4129 4134-4135 4137-4139 4572 4574-4575 5127 5131 6151 6155 7221-7223 7225-7227 7237-7239 7241-7243 7296 7299 7301-7303 7305-7307 8567 8571 8631 8635-8637 8639 8647 8651 8823 8829 8887 8893-8894 8903 8909 8911 8915 8917-8919 8933-8938 8940-8942 8971 8973-8974 8976-8977 8979 8995 9591 9595 9655 9661 9671 9675 9851-9852 9854-9855 9911 9915 9927 9931 9991 9995 10000 10002-10003 10006-10007 10016-10017 10027 10679 10683 10699-10700 10703 10713-10716 10718-10719 10725-10727 10871 10875 10935 10939 10951 10955 11015 11019 11647 11728 11730 11733-11735 11737-11739 11749-11751 11753-11755 11975 11996 11999 12015-12016 12019 12021-12023 12025-12027 12055 12057-12059 12076 12079 12160 12163 12165-12167 12169-12171 6/3036 3044-3046 3052 3056 3066-3067 3292 3308 3312 3314-3315 3319-3321 3323 3372-3373 3375-3377 3379 3452-3454 3461-3463 3465 3467 3496 3516-3518 3540 3542 3548 3550 3612 3628 3632 3642-3643 3646 3648 3650-3651 3668 3670 3672-3673 3681-3684 3688 3694-3695 3700-3701 3703 3706 3709 3722-3723 3726 3729 3732 3743 3765 3781 3786 3792-3793 3803 3806-3808 3825 3828 3845-3847 3850-3854 3868 3870-3874 3886-3887 3889 3891 3897 3900-3901 3903-3905 3907 3916-3917 3919 3936 3941 3943 3946-3947 3949 3956 3960-3961 3969 3972-3974 3989 3991 7508-7509 7511-7512 7514 7516-7517 7519 7541 7543-7544 7546-7547 7616 7618-7619 7637-7640 7642-7645 7647 7656 7658-7659 7677 7679 7756-7758 7780 7782-7783 7868 7870 7913 7916-7917 7919 7960-7962 8004-8006 8012-8013 8015 8017 8021 8023-8024 8026 8029 8031-8032 8037 8039 8042 8056-8057 8096 8098-8102 8116-8117 8132 8134 8136 10236 10238 11596-11598 11608 11620 11624 11631 11668-11670 11672 11684 11688 11692-11693 11695 11700-11701 11703 11706 11709 11717 11719-11720 11722 11728 11730 11744-11746 11755 11761 11764 11766 11900 11902-11903 11924 11928 11930-11931 11934-11935 11940 11944 11947 11950-11951 11956-11957 11961-11963 11971 11973 11978-11979 11984-11985 11994-11995 11998-12002 12005 12010-12011 12014-12017 12020-12021 12026 12030-12031 12037 12039 12044-12046 12048 12050 12057-12059 12062 12064-12066 12073-12075 12078-12079 12081 12084-12085 12097 12100 12102 12161 12172 12176 12186 12197 12202-12203 12206-12209 12211-12212 12224-12226 14300 14303 14316-14317 14319-14320 14325 14327 15580 15596 15600-15601 15603-15604 15606-15607 15612-15613 15644 15646-15647 15660 15662 15664 15668-15669 15671 15677 15680 15685 15687 15744 15757 15900 15926-15927 15932-15933 15942-15945 15948-15950 15968-15970 16000-16001 16006-16007 16012-16014 16016 16032-16034 16411 16414 16429 16431 16434-16435 16437-16441 16443-16445 16447 16449 16451 16456-16457 16459 16476-16478 16482 16484-16486 16496-16497 16499 16520-16521 16523-16525 16527-16529 16531 16533-16535 16545-16547 18293-18295 20503 20507 20519 20523 24599 24603 24615 24619 28798-28799 28862-28863 28877-28879 28881-28883 28897 28899 28941-28943 28945-28947 28961 28963 29190 29193 29201-29203 29217-29219 34263 34267 34279 34283 34519 34523 34539 34553-34555 34583 34587 34599 34603 35287 35291 35307 35311 35313 35315 35321-35323 35325-35327 35547 35564-35566 35569 35571 35581-35583 35623 35627 35629-35630 35634-35635 35640 35642-35643 35651 35654-35656 35658 35666-35667 35713 35715-35716 35718-35721 35723-35724 35727 35729-35731 35756 35758-35759 35773-35775 35869-35871 35879 35888 35890-35891 35901-35903 35912-35913 35915 35968-35970 35972-35974 35976-35978 38359 38363 38375 38379 38615 38619 38635 38641 38653 38655 38679 38682-38683 38695 38699 39383 39388 39399 39403 39414 39639 39643 39655 39659 39702-39703 39707 39719 39723 39959 39963 39975 39979 40004 40006-40007 40019 40021-40023 40076-40077 40079 40101-40103 40105-40107 42711 42713 42715 42725 42727 42731 42791 42794-42795 42804 42806 42808-42809 42831 42842-42843 42851 42868 42870-42871 42897-42899 43479 43483 43495 43499 43739 43751 43755 43799 43803 43815 43819 44055 44059 44070-44071 44075 46557 46559 46577 46579-46582 46584-46586 46847 46893 46898 46904-46905 46910-46911 46924 46927 46929 46931 46947 46989 46993 46995 47009 47925 47937 47944 47946 47957-47959 47962-47963 47968-47970 47975 47978-47979 47988 47990 47993 47995 48021 48023 48027-48028 48048-48049 48051 48054 48057 48068 48070-48071 48073 48081-48083 48097-48099 48213-48215 48217-48219 48227 48277 48279 48283-48284 48298-48299 48308 48310-48313 48315 48644 48646 48648-48649 48657-48659 48673-486752.0037234380611421e-19 4.670716440110116e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/241?format=asciiOpticaldefaultJ/AJ/156/241/table4*ATLAS catalog of candidate variable starsSimbadNameSimbad column added by the CDSmeta.idcharnullablefp-domper-c[0.000153/1500] Period corresponding to fp-powerterm-cdtime.perioddoublefp-power[0/6]? Highest amplitude Fourier term in the short-period fit (fp-powerterm) (1)src.var.amplitudeintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintATOIDOfficial ATLAS name (ATO JDDD.dddd+DD.dddd)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainindexedfp-c-pts[0/366] Number of c-band points fourierperiod identified as goodmeta.numberintfp-o-pts[0/417] Number of o-band points fourierperiod identified as goodmeta.numberintfp-LSper[0.021735/14505.8] Original period from fourierperiod's Lomb-Scargle periodogramdtime.perioddoublefp-origLogFAP[0/41] PPFAP for fourierperiod's Lomb-Scargle periodogram (1) (2)stat.fit.goodnessdoublefp-origRMS[0.00608/2.2687] rms scatter of median-subtracted input magnitudes that fourierperiod identified as goodmagstat.errordoublefp-magrms-c[0/4.76449] rms scatter of median-subtracted c-band magnitudes that fourierperiod identified as good (1)magstat.errordoublefp-magrms-o[0/2.20223] rms scatter of median-subtracted o-band magnitudes that fourierperiod identified as good (1)magstat.errordoublefp-lngfitper[5/1500] Final master period from the long-period Fourier fit (1)dtime.perioddoublefp-lngfitrms[0.005034/1.62378] rms scatter from the final long-period fitmagstat.errordoublefp-lngfitchi[0.087306/4314.64] {Chi}^2^/N for the long-period Fourier fitstat.fit.chi2doublefp-Nfourl[1/4] Number of Fourier terms used in the long-period fit (fp-lngfournum) (1)meta.numberintfp-lngmin-c[-30/29.4918] Minimum brightness reached by the long-period fit to the c-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.mindoublefp-lngmax-c[8.84805/50] Maximum brightness reached by the long-period fit to the c-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.maxdoublefp-lngmin-o[-30/20.9016] Minimum brightness reached by the long-period fit to the o-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.mindoublefp-lngmax-o[8.18799/50] Maximum brightness reached by the long-period fit to the o-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.maxdoublefp-lngfitrms-c[0/1.90675] rms scatter of residuals from the long-period fit to the c-band data (1)magstat.errordoublefp-lngfitrms-o[0/1.58836] rms scatter of residuals from the long-period fit to the o-band data (1)magstat.errordoublevf-per25[-4.431/-0.002] 25th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatfp-lngfitchi-c[0/5217.93] {Chi}^2^/N for the long-period Fourier fit to the c-band datastat.fit.chi2doublefp-lngfitchi-o[0/3313.04] {Chi}^2^/N for the long-period Fourier fit to the o-band datastat.fit.chi2doublefp-lngconst-c[-13196.6/7064.02] Constant term in the long-period fit to the c-band datamagstat.fit.paramdoublefp-lngconst-o[-7516.3/9822.24] Constant term in the long-period fit to the o-band datamagstat.fit.paramdoublefp-sin1-c[-8545.78/9203.88] Sine coefficient of the first Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublefp-cos1-c[-16962/9486.04] Cosine coefficient of the first Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublefp-sin1-o[-7889.02/5158.65] Sine coefficient of the first Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublefp-cos1-o[-8299.74/5514.23] Cosine coefficient of the first Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublefp-PPFAPlong1[0/41] PPFAP of residuals after subtraction of the best long-period Fourier fit with one term (2)stat.fit.goodnessdoublefp-sin2-c[-4987.1/3878.38]? Sine coefficient of the second Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-cos2-c[-7037.28/4419.9]? Cosine coefficient of the second Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-sin2-o[-2728/2875.01]? Sine coefficient of the second Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-cos2-o[-2322.39/2763.02]? Cosine coefficient of the second Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-PPFAPlong2[0/41]? PPFAP of residuals after subtraction of the best long-period Fourier fit with two terms (2)stat.fit.goodnessdoublenullablefp-sin3-c[-6221.59/2566.56]? Sine coefficient of the third Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-cos3-c[-3703.32/3052.83]? Cosine coefficient of the third Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-sin3-o[-1031.2/1280.57]? Sine coefficient of the third Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-cos3-o[-3164.26/1140.22]? Cosine coefficient of the third Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-PPFAPlong3[0/41]? PPFAP of residuals after subtraction of the best long-period Fourier fit with three terms (2)stat.fit.goodnessdoublenullablefp-sin4-c[-2971.96/2222.28]? Sine coefficient of the fourth Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-cos4-c[-2190.53/1883.03]? Cosine coefficient of the fourth Fourier term in the long-period fit to the c-band data (3)magstat.fit.paramdoublenullablefp-sin4-o[-948.079/1779.61]? Sine coefficient of the fourth Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-cos4-o[-1138.85/2195.2]? Cosine coefficient of the fourth Fourier term in the long-period fit to the o-band data (3)magstat.fit.paramdoublenullablefp-PPFAPlong4[0/41]? PPFAP of residuals after subtraction of the best long-period Fourier fit with four terms (2)stat.fit.goodnessdoublenullablefp-hifreq-c[0/2961.99]? A measure of the relative power in the high-frequency vs low-frequency terms in the long-period Fourier fit to the c-bandstat.fit.paramdoublenullablefp-hifreq-o[0/1623.17]? A measure of the relative power in the high-frequency vs low-frequency terms in the long-period Fourier fit to the o-bandstat.fit.paramdoublenullablefp-timerev-c[0/128573]? A measure of the degree of invariance of the long-period Fourier fit to the c-band data with respect to the reversal (i.e., mirroring) of the time axis about the time of minimum light (large value=invariant)stat.fit.paramdoublenullablefp-timerev-o[0/30660]? A measure of the degree of invariance of the long-period Fourier fit to the o-band data with respect to the reversal (i.e., mirroring) of the time axis about the time of minimum light (large value=invariant)stat.fit.paramdoublenullablefp-phase180-c[0/1441.45]? A measure of the degree of invariance of the long-period Fourier fit to the c-band data with respect to a 180{deg} phase shift (large value=invariant)stat.fit.paramdoublenullablefp-phase180-o[0/809.737]? A measure of the degree of invariance of the long-period Fourier fit to the o-band data with respect to a 180{deg} phase shift (large value=invariant)stat.fit.paramdoublenullablefp-power-c[1/32766] Highest amplitude Fourier term in the long-period fit to the c-band data (fp-powerterm-c) (1)src.var.amplitudeintfp-power-o[-2016320490/2071847958] Highest amplitude Fourier term in the long-period fit to the o-band data (fp-powerterm-o) (1)src.var.amplitudelongfp-domper-o[-0.000008/1499.992432]? Period corresponding to fp-powerterm-odtime.perioddoublenullablef_fp-domper-o[I] I for infinitymeta.codecharfp-fit[0/1] Was a short-period fit performed? (0=no, 1=yes) (fp-shortfit) (1)meta.codeintfp-period[0/29.9995]? Final master period from the short-period Fourier fit (1)dtime.perioddoublenullablefp-fitrms[0/1.57105]? rms scatter from the final short-period fitmagstat.errordoublenullablefp-fitchi[0/4959.91]? {Chi}^2^/N for the short-period Fourier fitstat.fit.chi2doublenullablefp-Nfours[0/6]? Number of Fourier terms used in the short-period fit (fp-fournum) (1)meta.numberintnullablefp-alias[-3/3]? Diurnal alias j of the final period relative to fp-LSper (see Equation (4), Section 3.4)stat.fit.paramfloatnullablefp-mult[0/6]? Multiplication factor f of the final period relative to fp-LSper (see Equation (4), Section 3.4) (fp-multfac)stat.fit.paramintnullablefp-phaseoff[-5.975/2]? Offset of the final period relative to fp-LSper, in cycles over the full temporal span of our dataobs.param;arith.diffdoublenullablefp-min-c[-30/20.4622]? Minimum brightness reached by the short-period fit to the c-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.mindoublenullablefp-max-c[0/50]? Maximum brightness reached by the short-period fit to the c-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.maxdoublenullablefp-min-o[-30/19.4405]? Minimum brightness reached by the short-period fit to the o-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.mindoublenullablefp-max-o[0/50]? Maximum brightness reached by the short-period fit to the o-band photometry at any time corresponding to an actual measurement (1)magphot.mag;em.opt;stat.maxdoublenullablefp-fitrms-c[0/2.1455]? rms scatter of residuals from the short-period fit to the c-band data (1)magstat.errordoublenullablefp-fitrms-o[0/1.82797]? rms scatter of residuals from the short-period fit to the o-band data (1)magstat.errordoublenullablefp-fitchi-c[0/4920.98]? {Chi}^2^/N for the short-period Fourier fit to the c-band datastat.fit.chi2doublenullablefp-fitchi-o[0/5625.9]? {Chi}^2^/N for the short-period Fourier fit to the o-band datastat.fit.chi2doublenullablefp-const-c[-940.908/4534.28]? Constant term in the short-period fit to the c-band data (1)magstat.fit.paramdoublenullablefp-const-o[-942.724/4534.26]? Constant term in the short-period fit to the o-band data (1)magstat.fit.paramdoublenullablefp-sin1[-2029.7/1303.39]? Sine coefficient of the first Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos1[-1164.18/7578.69]? Cosine coefficient of the first Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort1[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with one term (2)stat.fit.goodnessdoublenullablefp-sin2[-2540.77/1245.46]? Sine coefficient of the second Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos2[-634.503/4398.58]? Cosine coefficient of the second Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort2[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with two terms (2)stat.fit.goodnessdoublenullablefp-sin3[-1667.47/495.677]? Sine coefficient of the third Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos3[-484.095/1663.08]? Cosine coefficient of the third Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort3[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with three terms (2)stat.fit.goodnessdoublenullablefp-sin4[-616.885/221.102]? Sine coefficient of the fourth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos4[-287.216/352.483]? Cosine coefficient of the fourth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort4[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with four terms (2)stat.fit.goodnessdoublenullablefp-sin5[-173.413/83.6868]? Sine coefficient of the fifth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos5[-60.0101/82.5777]? Cosine coefficient of the fifth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort5[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with five terms (2)stat.fit.goodnessdoublenullablefp-sin6[-32.4282/9.5854]? Sine coefficient of the sixth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-cos6[-55.3204/9.23645]? Cosine coefficient of the sixth Fourier term in the short-period fit (3)magstat.fit.paramdoublenullablefp-PPFAPshort6[0/41]? PPFAP of residuals after subtraction of the best short-period Fourier fit with six terms (2)stat.fit.goodnessdoublenullablefp-hifreq[0/690.006]? A measure of the relative power in the high-frequency vs. low-frequency terms in the short-period Fourier fitstat.fit.paramdoublenullablefp-timerev[0/18088.5]? A measure of the degree of invariance of the short-period Fourier fit with respect to a reversal (i.e., mirroring) of the time axis about the time of minimum light (large value=invariant) (1)stat.fit.paramdoublenullablefp-phase180[0/344.646]? A measure of the degree of invariance of the short-period Fourier fit with respect to a 180{deg} phase shift (large value=invariant) (1)stat.fit.paramdoublenullablefp-domperiod[0/29.9995]? Period corresponding to fp-powertermdtime.perioddoublenullablevf-Nc[1/372] Number of c-band observationsmeta.numberintvf-No[1/420] Number of o-band observationsmeta.numberintvf-c-med[9.501/19.995] Weighted median c magnitude (1)magphot.mag;em.optfloatvf-o-med[8.246/19.005] Weighted median o magnitude (1)magphot.mag;em.optfloatvf-per5[-9.047/-0.009] 5th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatvf-per10[-6.935/-0.007] 10th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatvf-per75[0.003/5.136] 75th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatvf-per90[0.007/6.197] 90th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatvf-per95[0.009/6.282] 95th percentile of median-subtracted magnitudes (1)magphot.mag;em.optfloatvf-Hday[-6.472/610.677] A statistic probing the significance of intranight variations (1)stat.fit.goodnessfloatvf-Hlong[0/23856] A statistic probing the significance of internight (long-term) variations (1)stat.fit.goodnessdoublevf-wsd[0.007/3.899] Weighted standard deviation (4)stat.stdevfloatvf-iqr[0.008/6.173] Interquartile range (4)stat.fit.paramfloatvf-chin[0.181/12738.3] Reduced {Chi}^2^={Chi}^2^/(N-1) (1) (4)meta.notedoublevf-roms[0.281/83.186] Robust median statistic (1) (4)stat.fit.paramfloatvf-nxs[-0.03235/25.7368] Normalized excess variance (4)stat.variancedoublevf-nppa[0/0.363] Normalized peak-to-peak amplitude (4)src.var.amplitudefloatvf-inu[0.305/136.35] Inverse von Neumann ratio (1) (4)stat.fit.paramfloatvf-WS-I[-26.432/12705.5] Welch-Stetson I (1) (4)src.var.indexdoublevf-S-J[-5.725/124.856] Stetson J (1) (4)src.var.indexfloatvf-S-K[0.088/0.968] Stetson K (4)src.var.indexfloatdf-Ndet[0/791] Number of detections at this location in the difference images (df-numdet)meta.numberintdf-medmag[0/29.16] Median magnitude of detections in the difference images (5)magphot.mag;em.optfloatdf-meanmag[0/29.16] Mean magnitude of detections in the difference images (5)magphot.mag;em.optfloatdf-medsig[0/1000] Median S/N of detections in the difference imagesstat.snrfloatdf-meansig[0/1000] Mean S/N of detections in the difference imagesstat.snrfloatdf-r2sig[0/1000] S/N of the secondmost significant difference image detectionstat.snrfloatdf-r1sig[0/1000] S/N of the most significant difference image detectionstat.snrfloatdf-medchin[0/997.73] Median {Chi}^2^/N of PSF fits on the difference imagesstat.fit.chi2floatdf-Nbright[0/632] Number of positive-going detections on the difference images (df-numbright)meta.numberintdf-medPvar[0/999] Median value of Pvr (probability of being a variable star) from varteststat.fit.goodnessfloatdf-meanPvar[0/999] Mean value of Pvrstat.fit.goodnessfloatdf-r2Pvar[0/999] Second highest value of Pvrstat.fit.goodnessintdf-r1Pvar[0/999] Highest value of Pvrstat.fit.goodnessintdf-medPscar[0/999] Median value Psc (probability of being a star subtraction residual) from varteststat.fit.goodnessfloatdf-meanPscar[0/999] Mean value Psc (probability of being a star subtraction residual) from varteststat.fit.goodnessfloatps-dist[0.6/60]? Angular distance to the nearest star in our Pan-STARRS reference catalogarcsecmeta.idfloatnullableps-dist0[0.6/60]? Angular distance to the nearest star in our Pan-STARRS reference catalog that is at least equally brightarcsecmeta.idfloatnullableps-dist2[1.2/60]? Angular distance to the nearest star in our Pan-STARRS reference catalog that is at least two magnitudes brighterarcsecmeta.idfloatnullableps-dist4[1.9/60]? Angular distance to the nearest star in our Pan-STARRS reference catalog that is at least four magnitudes brighterarcsecmeta.idfloatnullablels-Npt[100/692] Number of photometric measurements input to lombscarmeta.numberintls-Nuse[12/691] Number of photometric measurements lombscar identified as goodmeta.numberintls-c-med[1.132/27.226] Median c-band magnitude calculated by lombscarmagphot.mag;em.optfloatls-o-med[-8.752/64.347] Median o-band magnitude calculated by lombscarmagphot.mag;em.optfloatls-Pday[0.038263/3540.18] Period output by lombscardtime.perioddoublels-PPFAP[0/114.048] PPFAP from Lomb-Scargle periodogram in lombscar (2)stat.fit.goodnessfloatls-Chin[0.008/37.232] {Chi}^2^/N for the Fourier+polynomial fit performed by lombscarstat.fit.chi2floatls-Cchin[0.055/1529.44] {Chi}^2^/N for the constant-magnitude fit performed by lombscarstat.fit.chi2doublels-Pchin[0.053/239.199] {Chi}^2^/N for the polynomial-only fit performed by lombscarstat.fit.chi2floatls-Xchin[0.172/1504.22] {Chi}^2^/N for the polynomial-only fit performed by lombscar, without outlier trimmingstat.fit.chi2doublels-Fraclo[0/0.6763] Fraction of points with magnitudes more than 5{sigma} below the medianstat.fit.paramfloatls-Frachi[0/0.6897] Fraction of points with magnitudes more than 5{sigma} above the medianstat.fit.paramfloatls-txclo[-0.694/0.992] Fraction of low outliers with time difference less than 0.06 daysstat.fit.paramfloatls-txchi[-0.694/0.992] Fraction of high outliers with time difference less than 0.06 daysstat.fit.paramfloatls-Chin-minus-1[0.013/40784.3] {Chi}^2^/N for the lombscar Fourier fit to j=-1 aliasstat.fit.chi2doublels-Chin-minus-h[0.016/216941] {Chi}^2^/N for the lombscar Fourier fit to j=-0.5 aliasstat.fit.chi2doublels-Chin-plus-h[0.013/86.651] {Chi}^2^/N for the lombscar Fourier fit to j=+0.5 aliasstat.fit.chi2floatls-Chin-plus-1[0.014/123.748] {Chi}^2^/N for the lombscar Fourier fit to j=+1 aliasstat.fit.chi2floatls-Ply1[-26.434/16.03] Linear coefficient of the polynomial fit by lombscarmag/yrstat.fit.paramfloatls-Ply2[-70.895/221.363] Quadratic coefficient of the polynomial fit by lombscarmag.yr**-2stat.fit.param;meta.modelledfloatls-Phgap[0.007/0.875] Biggest time gap with no points in the folded light curve (fraction of ls-Pday)time.intervalfloatls-D[0/1] Period doubling (6)meta.codeintls-RMS[0.003/1.233053e+06] rms of residuals from lombscar Fourier fitstat.errordoublels-F0[-0.742/0.858] Amplitude of lombscar constant Fourier term divided by rmssrc.var.amplitudefloatls-F1cos[-0.948/0.935] Amplitude of lombscar cos1 Fourier term divided by rmssrc.var.amplitudefloatls-F1sin[-0.952/0.951] Amplitude of lombscar sin1 Fourier term divided by rmssrc.var.amplitudefloatls-F2cos[-0.999/0.999] Amplitude of lombscar cos2 Fourier term divided by rmssrc.var.amplitudefloatls-F2sin[-0.999/0.999] Amplitude of lombscar sin2 Fourier term divided by rmssrc.var.amplitudefloatls-F3cos[-0.902/0.9] Amplitude of lombscar cos3 Fourier term divided by rmssrc.var.amplitudefloatls-F3sin[-0.943/0.937] Amplitude of lombscar sin3 Fourier term divided by rmssrc.var.amplitudefloatls-F4cos[-0.898/0.903] Amplitude of lombscar cos4 Fourier term divided by rmssrc.var.amplitudefloatls-F4sin[-0.962/0.958] Amplitude of lombscar sin4 Fourier term divided by rmssrc.var.amplitudefloatClassFinal ATLAS variable classification (7)meta.code;src.varcharddc[0/1] Difference image statistic (1=probably variable independent of any other information) (ddcSTAT)stat.fit.paramintprox[0/1] Proximity statistic (1=variability detection probably not caused by blending) (proxSTAT)stat.fit.paramintP(CBF)[0/1] Machine classifier probability that this star is in the CBF categorystat.fit.goodnessdoubleP(CBH)[0/1] Machine classifier probability that this star is in the CBH categorystat.fit.goodnessdoubleP(DBF)[0/1] Machine classifier probability that this star is in the DBF categorystat.fit.goodnessdoubleP(DBH)[0/1] Machine classifier probability that this star is in the DBH categorystat.fit.goodnessdoubleP(HARD)[0/1] Machine classifier probability that this star is IRR, LPV, or "dubious"stat.fit.goodnessdoubleP(MIRA)[0/1] Machine classifier probability that this star is in the MIRA categorystat.fit.goodnessdoubleP(MPULSE)[0/1] Machine classifier probability that this star is in the MPULSE categorystat.fit.goodnessdoubleP(MSINE)[0/1] Machine classifier probability that this star is in the MSINE categorystat.fit.goodnessdoubleP(NSINE)[0/1] Machine classifier probability that this star is in the NSINE categorystat.fit.goodnessdoubleP(PULSE)[0/1] Machine classifier probability that this star is in the PULSE categorystat.fit.goodnessdoubleP(SINE)[0/1] Machine classifier probability that this star is in the SINE categorystat.fit.goodnessdoubleP(IRR)[0/1] Machine classifier probability that this star is in the IRR categorystat.fit.goodnessdoubleP(LPV)[0/1] Machine classifier probability that this star is in the LPV categorystat.fit.goodnessdoubleP(dubious)[0/1] Machine classifier probability that this star is in the "dubious" categorystat.fit.goodnessdoublegmag[3.61/23.297] Pan-STARRS1 DR1 g-band magnitudemagphot.mag;em.opt.Bfloate_gmag[0/0.333] Uncertainty gmagmagstat.error;phot.magfloatrmag[4.12/21.866] Pan-STARRS1 DR1 r-band magnitudemagphot.mag;em.opt.Rfloate_rmag[0/0.333] Uncertainty on rmagmagstat.error;phot.magfloatimag[4.49/20.516] Pan-STARRS1 DR1 i-band magnitudemagphot.mag;em.opt.Ifloate_imag[0/0.333] Uncertainty on imagmagstat.error;phot.magfloatzmag[4.11/20.434]? Pan-STARRS1 DR1 z-band magnitudemagphot.mag;em.opt.Ifloatnullablee_zmag[0/0.333]? Uncertainty on zmagmagstat.error;phot.magfloatnullableymag[4.31/20.145]? Pan-STARRS1 DR1 Y-band magnitudemagphot.mag;em.IR.Jfloatnullablee_ymag[0/0.333]? Uncertainty on ymagmagstat.error;phot.magfloatnullablestarIDOld version of the ATLAS star identifier (historical interest only)meta.idcharobjIDObject identifier, useful for linkage with the "detection" databasemeta.id