J/ApJ/799/144ivo://CDS.VizieR/J/ApJ/799/144doi:10.26093/cds/vizier.17990144CDSKodric M.Riffeser A.Seitz S.Snigula J.Hopp U.Lee C.-H.,Koppenhoefer J.Bender R.Gieren W.2015-02-21T14:22:41Z2015-01-30T15:57:52ZCDS support team

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

cds-question@unistra.frgalaxiesvariable-starshst-photometryWe present the largest M31 near-infrared (F110W (close to J band), F160W (H band)) Cepheid sample so far. The sample consists of 371 Cepheids with photometry obtained from the HST PHAT program. The sample of 319 fundamental mode Cepheids, 16 first overtone Cepheids and 36 type II Cepheids, was identified using the median absolute deviation (MAD) outlier rejection method we develop here. This method does not rely on priors and allows us to obtain this clean Cepheid sample without rejecting a large fraction of Cepheids. The obtained Period-Luminosity relations (PLRs) have a very small dispersion, i.e. 0.155mag in F160W, despite using random phased observations. This remarkably small dispersion allows us to determine that the PLRs are significantly better described by a broken slope at ten days than a linear slope. The use of our sample as an anchor to determine the Hubble constant gives a 3.2% larger Hubble constant compared to the Riess et al. (2012ApJ...745..156R, Cat. J/ApJ/745/156) sample.2015ApJ...799..144Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/799/144CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/745/156 : M31 Cepheids with HST/WFC3 (Riess+, 2012)J/AJ/145/106 : M31 Cepheid disk sample of 1st year of PS1 (Kodric+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/799/144https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/799/144http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/799/144https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/799/144https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/799/144http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/799/144GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/799/144/table (Cepheid coordinates and photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/799/144/table?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/799/144/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/799/144/table?GETtext/xml+votable180.050000true10.6430641.333160.005555555555555556Cone search capability for table J/ApJ/799/144/clipped (*Clipped Cepheid coordinates and photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/799/144/clipped?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/799/144/clipped?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/799/144/clipped?GETtext/xml+votable180.050000true10.7057541.346760.0055555555555555566/2623 2666 2709 2752https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/799/144?format=asciiOpticaldefaultJ/ApJ/799/144/tableCepheid coordinates and photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSOCepheid identifier (JDDD.dddd+DD.dddd) \linkRole{results from PSO, including light curves (Kodric et al. 2013, J/AJ/145/106)}meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPer[2/54] Perioddtime.periodfloatF110WHST/ACS F110W magnitudemagphot.mag;em.IR.Jfloate_F110WF110W magnitude errormagstat.errorfloatF160WHST/ACS F160W magnitudemagphot.mag;em.IR.Hfloate_F160WF160W magnitude errormagstat.errorfloatTypeCepheid type: FM=Fundamental Mode, FO=First Overtone, T2=Type-II Cepheidmeta.note;instr.setupcharJ/ApJ/799/144/clipped*Clipped Cepheid coordinates and photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSOCepheid identifier (JDDD.dddd+DD.dddd) \linkRole{results from PSO, including light curves (Kodric et al. 2013, J/AJ/145/106)}meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPer[2/54] Perioddtime.periodfloatF110WHST/ACS F110W magnitudemagphot.mag;em.IR.Jfloate_F110WF110W magnitude errormagstat.errorfloatF160WHST/ACS F160W magnitudemagphot.mag;em.IR.Hfloate_F160WF160W magnitude errormagstat.errorfloatTypeCepheid type: FM=Fundamental Mode, FO=First Overtone, T2=Type-II Cepheidmeta.note;instr.setupchar