J/AJ/126/175ivo://CDS.VizieR/J/AJ/126/175doi:10.26093/cds/vizier.51260175CDSBonanos A.Z.Stanek K.Z.Sasselov D.D.Mochejska B.J.Macri L.M.,Kaluzny J.2023-04-06T16:50:57Z2009-02-03T08:43:08ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvariable-starsThe DIRECT Project aims to obtain direct distances to two Local Group galaxies, M31 and M33, which occupy a crucial position near the base of the cosmological distance ladder. The first step is to search for detached eclipsing binaries (DEBs) and Cepheids using 1m class telescopes to select good candidates, which will be followed up spectroscopically on 6.510m class telescopes. In this ninth paper, we present a catalog of variable stars discovered with image subtraction in field M31Y (RA=10.97{deg}, DE=41.69{deg}; J2000.0). The data were obtained with the Fred Lawrence Whipple Observatory 1.2m telescope on 25 nights, over a period of 6 months. In our search covering 22x22, we discovered 41 eclipsing binaries, 126 Cepheids, and 97 other periodic or nonperiodic variables, including a luminous blue variable candidate, a nova, and a Galactic cataclysmic variable. The catalog of variables, as well as their photometry and finding charts, is available electronically via anonymous ftp and the World Wide Web, at http://cfa-www.harvard.edu/~kstanek/DIRECT . The complete set of the CCD frames is available upon request.2003AJ....126..175Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/126/175CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/115/1894 : M31A eclipsing binaries and Cepheids (Stanek+ 1998)J/AJ/115/1016 : M31B eclipsing binaries and Cepheids (Kaluzny+ 1998)J/AJ/117/2810 : M31C eclipsing binaries and Cepheids (Stanek+, 1999)J/AJ/118/346 : M31D eclipsing binaries and Cepheids (Kaluzny+ 1999)J/AJ/118/2211 : M31F eclipsing binaries and Cepheids (Mochejska+ 1999)J/AJ/122/1383 : DIRECT BVI photometry in M31 (Mochejska+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/126/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/126/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/126/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/126/175https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/126/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/126/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/126/175/table2 (DIRECT Eclipsing Binaries in M31Y)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/175/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/175/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/175/table2?GETtext/xml+votable180.050000true11.09333341.6475280.005555555555555556Cone search capability for table J/AJ/126/175/table4 (DIRECT Cepheids in M31Y)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/175/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/175/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/175/table4?GETtext/xml+votable180.050000true10.73208341.5920.005555555555555556Cone search capability for table J/AJ/126/175/table6 (DIRECT Other Periodic Variables in M31Y)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/175/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/175/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/175/table6?GETtext/xml+votable180.050000true10.83958341.8567220.005555555555555556Cone search capability for table J/AJ/126/175/table8 (DIRECT Miscellaneous Variables in M31Y)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/175/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/175/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/175/table8?GETtext/xml+votable180.050000true10.72541741.6760830.0055555555555555566/2623 2709 2752https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/126/175?format=asciiOpticaldefaultJ/AJ/126/175/table2DIRECT Eclipsing Binaries in M31YrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintD31Object name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharprimaryPerPerioddtime.perioddoubleBmag? Maximum Johnson B-band magnitude outside of eclipsemagphot.mag;em.opt.BfloatnullableVmag? Maximum Johnson V-band magnitude outside of eclipsemagphot.mag;em.opt.VfloatnullableImag? Maximum Johnson I-band magnitude outside of eclipsemagphot.mag;em.opt.IfloatnullableRad1? Primary radius in units of orbital separation (1)phys.size;arith.ratiofloatnullableRad2? Secondary radius in units of orbital separation (1)phys.size;arith.ratiofloatnullableInc? Inclination angle (1)degsrc.orbital.inclination;pos.posAngfloatnullableEcc? Eccentricity (1)src.orbital.eccentricityfloatnullableComAdditional commentsmeta.notecharPlotplot the observations of this star as a function of time/phasemeta.ref.urlchar_RAPosition, derived from D31 name (right ascension part)degpos.eq.ra;meta.main_DEPosition, derived from D31 name (declination part)degpos.eq.dec;meta.mainJ/AJ/126/175/curvesLight curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintD31Object name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharFilterFilter passband (1)instr.bandpasscharObs.DJulian Date of observation (HJD)dtime.epoch;obsdoubleDataObserved magnitude or differential fluxphot.flux.density;em.optdoublee_DataUncertainty in Datastat.errorfloatJ/AJ/126/175/table4DIRECT Cepheids in M31YrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintD31Object name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharprimaryPerPerioddtime.periodfloatAV? The V-band amplitudemagphot.mag;em.opt.VfloatnullableVmag? Flux-weighted average Johnson V-band magnitudemagphot.mag;em.opt.VfloatnullableImag? Flux-weighted average Johnson I-band magnitudemagphot.mag;em.opt.IfloatnullableBmag? Flux-weighted average Johnson B-band magnitudemagphot.mag;em.opt.BfloatnullableComAdditional commentsmeta.notecharPlotplot the observations of this star as a function of time/phasemeta.ref.urlchar_RAPosition, derived from D31 name (right ascension part)degpos.eq.ra;meta.main_DEPosition, derived from D31 name (declination part)degpos.eq.dec;meta.mainJ/AJ/126/175/table6DIRECT Other Periodic Variables in M31YrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintD31Object name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharprimaryPerPerioddtime.perioddoubleVmagFlux-weighted average Johnson V-band magnitudemagphot.mag;em.opt.VfloatImag? Flux-weighted average Johnson I-band magnitudemagphot.mag;em.opt.IfloatnullableBmag? Flux-weighted average Johnson B-band magnitudemagphot.mag;em.opt.BfloatnullableComAdditional commentsmeta.notecharPlotplot the observations of this star as a function of time/phasemeta.ref.urlchar_RAPosition, derived from D31 name (right ascension part)degpos.eq.ra;meta.main_DEPosition, derived from D31 name (declination part)degpos.eq.dec;meta.mainJ/AJ/126/175/table8DIRECT Miscellaneous Variables in M31YrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintD31Object name (JHHMMSS.s+DDMMSS.s)meta.id;meta.maincharVmag? The average Johnson V-band magnitudemagphot.mag;em.opt.VfloatnullableImag? The average Johnson I-band magnitudemagphot.mag;em.opt.IfloatnullableBmag? The average Johnson B-band magnitudemagphot.mag;em.opt.BfloatnullableComAdditional commentsmeta.notechar_RAPosition, derived from D31 name (right ascension part)degpos.eq.ra;meta.main_DEPosition, derived from D31 name (declination part)degpos.eq.dec;meta.main