J/ApJ/864/111ivo://CDS.VizieR/J/ApJ/864/111doi:10.26093/cds/vizier.18640111CDSConroy C.Strader J.van Dokkum P.Dolphin A.E.Weisz D.R.Murphy J.W.,Dotter A.Johnson B.D.Cargile P.2019-10-29T13:41:38Z2019-10-28T09:33:58ZCDS support team

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

cds-question@unistra.frgalaxieshst-photometryinfrared-photometryvisible-astronomyphotometryvariable-starsStellar photometric variability offers a novel probe of the interior structure and evolutionary state of stars. Here we present a census of stellar variability on day to decade timescales across the color-magnitude diagram (CMD) for 73000 stars brighter than M_I,814_=-5 in the Whirlpool Galaxy (M51). Our Cycle 24 Hubble Space Telescope (HST) program acquired V606- and I814-band images over 34 epochs spanning 1 year with pseudo-random cadences enabling sensitivity to periods from days to months. We supplement these data with archival V- and I-band HST data obtained in 1995 and 2005, providing sensitivity to variability on decade timescales. At least 50% of stars brighter than M_I,814_=-7 show strong evidence for variability within our Cycle 24 data; among stars with V_606_-I_814_>2 the variability fraction rises to ~100%. Large amplitude variability (>0.3mag) on decade timescales is restricted to red supergiants (RSGs) and very luminous blue stars. Both populations display fairly smooth variability on month-year timescales. The Cepheid instability strip is clearly visible in our data, although the variability fraction within this region never exceeds ~10%. The location of variable stars across the CMD broadly agrees with theoretical sources of variability, including the instability strip, RSG pulsational instabilities, long-period fundamental mode pulsations, and radiation-dominated envelopes in massive stars. Our data can be used to place stringent constraints on the precise onset of these various instabilities and their lifetimes and growth rates.2018ApJ...864..111Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/864/111CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)J/AJ/128/1761 : HATNET variability survey (Hartman+, 2004)J/ApJ/633/871 : Positions and photometry of HII knots in M51 (Calzetti+, 2005)J/MNRAS/371/1405 : Variables in M33 (Hartman+, 2006)J/AJ/134/2474 : H{alpha} emission-line stars in 7 dwarfs gal. (Massey+, 2007)J/ApJ/703/420 : Red supergiants in M31 (Massey+, 2009)J/AcA/59/239 : VI LCs of LMC long-period variables (Soszynski+, 2009)J/ApJ/752/95 : PHAT stellar cluster survey. I. Year 1 (Johnson+, 2012)J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)J/A+A/566/A43 : EPOCH Project. EROS-2 LMC periodic variables (Kim+, 2014)J/A+A/562/A125 : OGLE-III SMC massive stars VI light curves (Kourniotis+, 2014)J/MNRAS/442/2381 : Variable stars in M4 primary field (Nascimbeni+, 2014)J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)J/AcA/65/297 : OGLE4 LMC and SMC Cepheids (Soszynski+, 2015)J/ApJ/844/40 : Var. stars in M31 and M33. V. HR diagram (Humphreys+, 2017)J/AJ/154/81 : BVRI photom. of luminous stars in M31 and M33 (Martin+, 2017)J/ApJ/859/73 : Var. of RSGs in M31 from the iPTF survey (Soraisam+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/864/111https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/864/111http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/864/111https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/864/111https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/864/111http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/864/111GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/864/111/catalog (Catalog of stars and derived parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/864/111/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/864/111/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/864/111/catalog?GETtext/xml+votable180.050000true202.482498647.19584090.005555555555555556Cone search capability for table J/ApJ/864/111/lcs (*HST cycle 24 V- and I-band measurements for the 72623 stars; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/864/111/lcs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/864/111/lcs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/864/111/lcs?GETtext/xml+votable180.050000true202.447621847.16697470.0055555555555555566/110272.0401237512456292e-19 3.9057996558789745e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/864/111?format=asciiInfraredOpticaldefaultJ/ApJ/864/111/catalogCatalog of stars and derived parameterse_ImagEp2? ImagEp2 error ( ERRI_C24)magstat.errorfloatnullableLCInteractive plotmeta.ref.urlchare_VmagEp7? VmagEp7 error ( ERRV_C24)magstat.errorfloatnullablee_VmagEp16[0.001/29]? VmagEp16 error ( ERRV_C24)magstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[202.44/202.55] Right ascension (J2000) (RA)degpos.eq.ra;meta.mainindexedDEJ2000[47.1/47.3] Declination (J2000) (DEC)degpos.eq.dec;meta.mainindexedNc24Number of Cycle 24 epochs with measurements for this star (link to lcs.dat table)meta.numberintnullableVmag[18.7/33.6]? HST/ACS V606 magnitude of combined Cycle 24 data (MAGV0_C24)magphot.mag;em.opt.Rfloatnullablee_Vmag[0.0001/8]? Vmag error (ERRV0_C24)magstat.error;phot.mag;em.opt.VfloatnullablechiV[0.9/4.3] V606 {chi} parameter of combined Cycle 24 data (CHIV0_C24)stat.fit.chi2floatsharpV[-2.6/9.2]? V606 sharpness parameter of combined Cycle 24 data (SHARPV0_C24)stat.fit.paramfloatnullablecrowdV[0/3.8] V606 crowding parameter of combined Cycle 24 data (CROWDV0_C24)stat.fit.paramfloatImag[18.1/24.7] HST/ACS I814 magnitude of combined Cycle 24 data (MAGI0_C24)magphot.mag;em.opt.Ifloate_Imag[0.0001/0.04] Imag error (ERRI0_C24)magstat.error;phot.mag;em.opt.IfloatchiI[0.9/2] I814 {chi} parameter of combined Cycle 24 data (CHII0_C24)stat.fit.chi2floatsharpI[-0.2/0.2] I814 sharpness parameter of combined Cycle 24 data (SHARPI0_C24)stat.fit.paramfloatcrowdI[0/0.5] I814 crowding parameter of combined Cycle 24 data (CROWDI0_C24)stat.fit.paramfloatVmagEp1? V606 magnitude for Cycle 24 data at Epoch 1 (MAGV_C24)magphot.mag;em.opt.Rfloatnullablee_VmagEp1[0.001/23]? VmagEp1 error (ERRV_C24)magstat.errorfloatnullableVmagEp2? V606 magnitude for Cycle 24 data at Epoch 2magphot.mag;em.opt.Rfloatnullablee_VmagEp2? VmagEp2 error ( ERRV_C24)magstat.errorfloatnullableVmagEp3? V606 magnitude for Cycle 24 data at Epoch 3magphot.mag;em.opt.Rfloatnullablee_VmagEp3? VmagEp3 error ( ERRV_C24)magstat.errorfloatnullableVmagEp4? V606 magnitude for Cycle 24 data at Epoch 4magphot.mag;em.opt.Rfloatnullablee_VmagEp4? VmagEp4 error ( ERRV_C24)magstat.errorfloatnullableVmagEp5? V606 magnitude for Cycle 24 data at Epoch 5magphot.mag;em.opt.Rfloatnullablee_VmagEp5? VmagEp5 error ( ERRV_C24)magstat.errorfloatnullableVmagEp6[18.8/36.5]? V606 magnitude for Cycle 24 data at Epoch 6magphot.mag;em.opt.Rfloatnullablee_VmagEp6[0.001/30]? VmagEp6 error ( ERRV_C24)magstat.errorfloatnullableVmagEp7? V606 magnitude for Cycle 24 data at Epoch 7magphot.mag;em.opt.RfloatnullableVmagEp8? V606 magnitude for Cycle 24 data at Epoch 8magphot.mag;em.opt.Rfloatnullablee_VmagEp8? VmagEp8 error ( ERRV_C24)magstat.errorfloatnullableVmagEp9? V606 magnitude for Cycle 24 data at Epoch 9magphot.mag;em.opt.Rfloatnullablee_VmagEp9? VmagEp9 error ( ERRV_C24)magstat.errorfloatnullableVmagEp10? V606 magnitude for Cycle 24 data at Epoch 10magphot.mag;em.opt.Rfloatnullablee_VmagEp10? VmagEp10 error ( ERRV_C24)magstat.errorfloatnullableVmagEp11? V606 magnitude for Cycle 24 data at Epoch 11magphot.mag;em.opt.Rfloatnullablee_VmagEp11? VmagEp11 error ( ERRV_C24)magstat.errorfloatnullableVmagEp12? V606 magnitude for Cycle 24 data at Epoch 12magphot.mag;em.opt.Rfloatnullablee_VmagEp12? VmagEp12 error ( ERRV_C24)magstat.errorfloatnullableVmagEp13? V606 magnitude for Cycle 24 data at Epoch 13magphot.mag;em.opt.Rfloatnullablee_VmagEp13? VmagEp13 error ( ERRV_C24)magstat.errorfloatnullableVmagEp14? V606 magnitude for Cycle 24 data at Epoch 14magphot.mag;em.opt.Rfloatnullablee_VmagEp14? VmagEp14 error ( ERRV_C24)magstat.errorfloatnullableVmagEp15[18.7/36]? V606 magnitude for Cycle 24 data at Epoch 15magphot.mag;em.opt.Rfloatnullablee_VmagEp15[0.002/21]? VmagEp15 error ( ERRV_C24)magstat.errorfloatnullableVmagEp16[18.7/41.1]? V606 magnitude for Cycle 24 data at Epoch 16magphot.mag;em.opt.RfloatnullableVmagEp17? V606 magnitude for Cycle 24 data at Epoch 17magphot.mag;em.opt.Rfloatnullablee_VmagEp17? VmagEp17 error ( ERRV_C24)magstat.errorfloatnullableVmagEp18? V606 magnitude for Cycle 24 data at Epoch 18magphot.mag;em.opt.Rfloatnullablee_VmagEp18? VmagEp18 error ( ERRV_C24)magstat.errorfloatnullableVmagEp19? V606 magnitude for Cycle 24 data at Epoch 19magphot.mag;em.opt.Rfloatnullablee_VmagEp19? VmagEp19 error ( ERRV_C24)magstat.errorfloatnullableVmagEp20? V606 magnitude for Cycle 24 data at Epoch 20magphot.mag;em.opt.Rfloatnullablee_VmagEp20? VmagEp20 error ( ERRV_C24)magstat.errorfloatnullableVmagEp21? V606 magnitude for Cycle 24 data at Epoch 21magphot.mag;em.opt.Rfloatnullablee_VmagEp21? VmagEp21 error ( ERRV_C24)magstat.errorfloatnullableVmagEp22? V606 magnitude for Cycle 24 data at Epoch 22magphot.mag;em.opt.Rfloatnullablee_VmagEp22? VmagEp22 error ( ERRV_C24)magstat.errorfloatnullableVmagEp23? V606 magnitude for Cycle 24 data at Epoch 23magphot.mag;em.opt.Rfloatnullablee_VmagEp23? VmagEp23 error ( ERRV_C24)magstat.errorfloatnullableVmagEp24? V606 magnitude for Cycle 24 data at Epoch 24magphot.mag;em.opt.Rfloatnullablee_VmagEp24? VmagEp24 error ( ERRV_C24)magstat.errorfloatnullableVmagEp25? V606 magnitude for Cycle 24 data at Epoch 25magphot.mag;em.opt.Rfloatnullablee_VmagEp25? VmagEp25 error ( ERRV_C24)magstat.errorfloatnullableVmagEp26? V606 magnitude for Cycle 24 data at Epoch 26magphot.mag;em.opt.Rfloatnullablee_VmagEp26? VmagEp26 error ( ERRV_C24)magstat.errorfloatnullableVmagEp27? V606 magnitude for Cycle 24 data at Epoch 27magphot.mag;em.opt.Rfloatnullablee_VmagEp27? VmagEp27 error ( ERRV_C24)magstat.errorfloatnullableVmagEp28? V606 magnitude for Cycle 24 data at Epoch 28magphot.mag;em.opt.Rfloatnullablee_VmagEp28? VmagEp28 error ( ERRV_C24)magstat.errorfloatnullableVmagEp29? V606 magnitude for Cycle 24 data at Epoch 29magphot.mag;em.opt.Rfloatnullablee_VmagEp29? VmagEp29 error ( ERRV_C24)magstat.errorfloatnullableVmagEp30? V606 magnitude for Cycle 24 data at Epoch 30magphot.mag;em.opt.Rfloatnullablee_VmagEp30? VmagEp30 error ( ERRV_C24)magstat.errorfloatnullableVmagEp31? V606 magnitude for Cycle 24 data at Epoch 31magphot.mag;em.opt.Rfloatnullablee_VmagEp31? VmagEp31 error ( ERRV_C24)magstat.errorfloatnullableVmagEp32? V606 magnitude for Cycle 24 data at Epoch 32magphot.mag;em.opt.Rfloatnullablee_VmagEp32? VmagEp32 error ( ERRV_C24)magstat.errorfloatnullableVmagEp33? V606 magnitude for Cycle 24 data at Epoch 33magphot.mag;em.opt.Rfloatnullablee_VmagEp33? VmagEp33 error ( ERRV_C24)magstat.errorfloatnullableVmagEp34? V606 magnitude for Cycle 24 data at Epoch 34magphot.mag;em.opt.Rfloatnullablee_VmagEp34? VmagEp34 error ( ERRV_C24)magstat.errorfloatnullableImagEp1[18.1/27.5]? I814 magnitude for cycle 24 data at epoch 1 (MAGI_C24)magphot.mag;em.opt.Ifloatnullablee_ImagEp1[0.001/1]? ImagEp1 error (ERRI_C24)magstat.errorfloatnullableImagEp2? I814 magnitude for cycle 24 data at epoch 2magphot.mag;em.opt.IfloatnullableImagEp3? I814 magnitude for cycle 24 data at epoch 3magphot.mag;em.opt.Ifloatnullablee_ImagEp3? ImagEp3 error ( ERRI_C24)magstat.errorfloatnullableImagEp4? I814 magnitude for cycle 24 data at epoch 4magphot.mag;em.opt.Ifloatnullablee_ImagEp4? ImagEp4 error ( ERRI_C24)magstat.errorfloatnullableImagEp5? I814 magnitude for cycle 24 data at epoch 5magphot.mag;em.opt.Ifloatnullablee_ImagEp5? ImagEp5 error ( ERRI_C24)magstat.errorfloatnullableImagEp6[18.1/26.3]? I814 magnitude for cycle 24 data at epoch 6magphot.mag;em.opt.Ifloatnullablee_ImagEp6[0.001/0.6]? ImagEp6 error ( ERRI_C24)magstat.errorfloatnullableImagEp7? I814 magnitude for cycle 24 data at epoch 7magphot.mag;em.opt.Ifloatnullablee_ImagEp7? ImagEp7 error ( ERRI_C24)magstat.errorfloatnullableImagEp8? I814 magnitude for cycle 24 data at epoch 8magphot.mag;em.opt.Ifloatnullablee_ImagEp8? ImagEp8 error ( ERRI_C24)magstat.errorfloatnullableImagEp9? I814 magnitude for cycle 24 data at epoch 9magphot.mag;em.opt.Ifloatnullablee_ImagEp9? ImagEp9 error ( ERRI_C24)magstat.errorfloatnullableImagEp10? I814 magnitude for cycle 24 data at epoch 10magphot.mag;em.opt.Ifloatnullablee_ImagEp10? ImagEp10 error ( ERRI_C24)magstat.errorfloatnullableImagEp11? I814 magnitude for cycle 24 data at epoch 11magphot.mag;em.opt.Ifloatnullablee_ImagEp11? ImagEp11 error ( ERRI_C24)magstat.errorfloatnullableImagEp12? I814 magnitude for cycle 24 data at epoch 12magphot.mag;em.opt.Ifloatnullablee_ImagEp12? ImagEp12 error ( ERRI_C24)magstat.errorfloatnullableImagEp13? I814 magnitude for cycle 24 data at epoch 13magphot.mag;em.opt.Ifloatnullablee_ImagEp13? ImagEp13 error ( ERRI_C24)magstat.errorfloatnullableImagEp14? I814 magnitude for cycle 24 data at epoch 14magphot.mag;em.opt.Ifloatnullablee_ImagEp14? ImagEp14 error ( ERRI_C24)magstat.errorfloatnullableImagEp15[18.1/30.1]? I814 magnitude for cycle 24 data at epoch 15magphot.mag;em.opt.Ifloatnullablee_ImagEp15[0.002/37]? ImagEp15 error ( ERRI_C24)magstat.errorfloatnullableImagEp16[18.1/28.4]? I814 magnitude for cycle 24 data at epoch 16magphot.mag;em.opt.Ifloatnullablee_ImagEp16[0.001/4]? ImagEp16 error ( ERRI_C24)magstat.errorfloatnullableImagEp17? I814 magnitude for cycle 24 data at epoch 17magphot.mag;em.opt.Ifloatnullablee_ImagEp17? ImagEp17 error ( ERRI_C24)magstat.errorfloatnullableImagEp18? I814 magnitude for cycle 24 data at epoch 18magphot.mag;em.opt.Ifloatnullablee_ImagEp18? ImagEp18 error ( ERRI_C24)magstat.errorfloatnullableImagEp19? I814 magnitude for cycle 24 data at epoch 19magphot.mag;em.opt.Ifloatnullablee_ImagEp19? ImagEp19 error ( ERRI_C24)magstat.errorfloatnullableImagEp20? I814 magnitude for cycle 24 data at epoch 20magphot.mag;em.opt.Ifloatnullablee_ImagEp20? ImagEp20 error ( ERRI_C24)magstat.errorfloatnullableImagEp21? I814 magnitude for cycle 24 data at epoch 21magphot.mag;em.opt.Ifloatnullablee_ImagEp21? ImagEp21 error ( ERRI_C24)magstat.errorfloatnullableImagEp22? I814 magnitude for cycle 24 data at epoch 22magphot.mag;em.opt.Ifloatnullablee_ImagEp22? ImagEp22 error ( ERRI_C24)magstat.errorfloatnullableImagEp23? I814 magnitude for cycle 24 data at epoch 23magphot.mag;em.opt.Ifloatnullablee_ImagEp23? ImagEp23 error ( ERRI_C24)magstat.errorfloatnullableImagEp24? I814 magnitude for cycle 24 data at epoch 24magphot.mag;em.opt.Ifloatnullablee_ImagEp24? ImagEp24 error ( ERRI_C24)magstat.errorfloatnullableImagEp25? I814 magnitude for cycle 24 data at epoch 25magphot.mag;em.opt.Ifloatnullablee_ImagEp25? ImagEp25 error ( ERRI_C24)magstat.errorfloatnullableImagEp26? I814 magnitude for cycle 24 data at epoch 26magphot.mag;em.opt.Ifloatnullablee_ImagEp26? ImagEp26 error ( ERRI_C24)magstat.errorfloatnullableImagEp27? I814 magnitude for cycle 24 data at epoch 27magphot.mag;em.opt.Ifloatnullablee_ImagEp27? ImagEp27 error ( ERRI_C24)magstat.errorfloatnullableImagEp28? I814 magnitude for cycle 24 data at epoch 28magphot.mag;em.opt.Ifloatnullablee_ImagEp28? ImagEp28 error ( ERRI_C24)magstat.errorfloatnullableImagEp29? I814 magnitude for cycle 24 data at epoch 29magphot.mag;em.opt.Ifloatnullablee_ImagEp29? ImagEp29 error ( ERRI_C24)magstat.errorfloatnullableImagEp30? I814 magnitude for cycle 24 data at epoch 30magphot.mag;em.opt.Ifloatnullablee_ImagEp30? ImagEp30 error ( ERRI_C24)magstat.errorfloatnullableImagEp31? I814 magnitude for cycle 24 data at epoch 31magphot.mag;em.opt.Ifloatnullablee_ImagEp31? ImagEp31 error ( ERRI_C24)magstat.errorfloatnullableImagEp32? I814 magnitude for cycle 24 data at epoch 32magphot.mag;em.opt.Ifloatnullablee_ImagEp32? ImagEp32 error ( ERRI_C24)magstat.errorfloatnullableImagEp33? I814 magnitude for cycle 24 data at epoch 33magphot.mag;em.opt.Ifloatnullablee_ImagEp33? ImagEp33 error ( ERRI_C24)magstat.errorfloatnullableImagEp34? I814 magnitude for cycle 24 data at epoch 34magphot.mag;em.opt.Ifloatnullablee_ImagEp34? ImagEp34 error ( ERRI_C24)magstat.errorfloatnullableVmag05[19/39.1]? HST V505 magnitude of 2005 data (MAG_HH)magphot.mag;em.opt.Vfloatnullablee_Vmag05[0.003/10]? Vmag05 error (ERR_HH)magstat.errorfloatnullableImag05[18/29]? HST I814 magnitude of 2005 datamagphot.mag;em.opt.Ifloatnullablee_Imag05[0.001/10]? Imag05 error ( ERR_HH)magstat.errorfloatnullablechiV05[0.6/9]? V505 {chi} parameter of 2005 data (CHI_HH)stat.fit.chi2floatnullablechiI05[0.6/5]? I814 {chi} parameter of 2005 data ( CHI_HH)stat.fit.chi2floatnullablesharpV05[-10/10]? V505 sharpness parameter of 2005 data (SHARP_HH)stat.fit.paramfloatnullablesharpI05[-8/6]? I814 sharpness parameter of 2005 data ( SHARP_HH)stat.fit.paramfloatnullablecrowdV05[0/7]? V505 crowding parameter of 2005 data (CROWD_HH)stat.fit.paramfloatnullablecrowdI05[0/6]? I814 crowding parameter of 2005 data ( CROWD_HH)stat.fit.paramfloatnullableVmag95[19/36]? HST/WFPC2 V505 magnitude of 1995 data (MAG_95)magphot.mag;em.opt.Vfloatnullablee_Vmag95[0.006/10]? Vmag95 eror (ERR_95)magstat.errorfloatnullableImag95[18/32]? HST/WFPC2 I814 magnitude of 1995 datamagphot.mag;em.opt.Ifloatnullablee_Imag95[0.004/10]? Imag95 error ( ERR_95)magstat.errorfloatnullablechiV95[0/18]? V505 {chi} parameter of 1995 data (CHI_95)stat.fit.chi2floatnullablechiI95[0/21]? I814 {chi} parameter of 1995 data ( CHI_95)stat.fit.chi2floatnullablesharpV95[-10/10]? V505 sharpness parameter of 1995 data (SHARP_95)stat.fit.paramfloatnullablesharpI95[-10/10]? I814 sharpness parameter of 1995 data ( SHARP_95)stat.fit.paramfloatnullablecrowdV95[0/10]? V505 crowding parameter of 1995 data (CROWD_95)stat.fit.paramfloatnullablecrowdI95[0/9]? I814 crowding parameter of 1995 data ( CROWD_95)stat.fit.paramfloatnullableC24-Arch[0/13] Matched separation between the C24 and archival catalogs (MATCH_TO_HH_95)pixpos.angDistancedoubleVmagC95[18.9/34.2]? Converted V606 magnitude for 1995 data (MAG_95_F606W)magphot.mag;em.opt.VfloatnullableVmagC05[18.8/38]? Converted V606 magnitude for 2005 data (MAG_HH_F606W)magphot.mag;em.opt.VfloatnullablePerV[0/90]? Lomb-Scargle period at maximum power in V606 (LS_PERIOD_V)dtime.perioddoublenullablePwrV[0/16.4] Lomb-Scargle maximum power in V606 (LS_MAXPOWER_V)src.var.indexdoublePerI[0.5/90]? Lomb-Scargle period at maximum power in I814 (LS_PERIOD_I)dtime.perioddoublenullablePwrI[1/16.3] Lomb-Scargle maximum power in I814 (LS_MAXPOWER_I)src.var.indexdoubleVrms[0.007/3]? rms of V606 light curve (RMS_V)stat.errordoublenullableIrms[0.008/1.5] rms of I814 light curve (RMS_I)stat.errordoubleVrmsN[0/73] Error-normalized rms of V606 light curve (RMSNORM_V)stat.errordoubleIrmsN[0.2/63] Error-normalized rms of I814 light curve (RMSNORM_I)stat.errordoubleJ/ApJ/864/111/lcs*HST cycle 24 V- and I-band measurements for the 72623 stars; table added by CDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[202.44/202.55] Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[47.1/47.3] Declination (J2000)degpos.eq.dec;meta.mainindexedMJDModified Julian Datedtime.epochfloatVmag? HST/ACS V606 magnitude for Cycle 24 datamagphot.mag;em.opt.Rfloatnullablee_Vmag? Vmag errormagstat.error;phot.mag;em.opt.VfloatnullableImag? HST/ACS I814 magnitude for cycle 24 datamagphot.mag;em.opt.Ifloatnullablee_Imag? Imag errormagstat.error;phot.mag;em.opt.Ifloatnullable