J/ApJ/745/156ivo://CDS.VizieR/J/ApJ/745/156doi:10.26093/cds/vizier.17450156CDSRiess A.G.Fliri J.Valls-Gabaud D.2017-11-29T11:47:56Z2014-09-08T13:01:33ZCDS support team

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

cds-question@unistra.frvariable-starshst-photometryinfrared-sourcesgalaxiesWe present measurements of 68 classical Cepheids, most detected from the Canada-France-Hawaii Telescope POMME Survey, with periods from 10 to 78 days observed in the near-infrared by the Panchromatic Hubble Andromeda Treasury Program using the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST). The combination of HST's resolution and the use of near-infrared measurements provide a dramatic reduction in the dispersion of the period-luminosity relation over the present optical, ground-based data. Even using random phase magnitudes we measure a dispersion of just 0.17mag, implying a dispersion of just 0.12mag for mean magnitudes. The error in the mean for this relation is 1% in distance. Combined with similar observations of Cepheids in other hosts and independent distance determinations, we measure a distance to M31 of {mu}_0_=24.38+/-0.06(statistical)+/-0.03(systematic), 752+/-27kpc, in good agreement with past measurements though with a better, 3% precision here. The result is also in good agreement with independent distance determinations from two detached eclipsing binaries allowing for an independent calibration of the Cepheid luminosities and a determination of the Hubble constant.2012ApJ...745..156Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/745/156CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/145/106 : M31 Cepheid disk sample of 1st year of PS1 (Kodric+, 2013)J/ApJ/752/95 : PHAT stellar cluster survey. I. Year 1 (Johnson+, 2012)J/ApJ/730/119 : HST/WFC3 obs. of Cepheids in SN Ia hosts (Riess+, 2011)J/A+A/509/A70 : Study of an eclipsing binary in M31 (Vilardell+, 2010)J/other/A+ARV/15.289 : Distances of local galaxies (Tammann+, 2008)J/A+A/445/423 : WeCAPP Survey. M31 variables (Fliri+, 2006)J/A+A/421/509 : AGAPE catalogue of M31 variables (Ansari+, 2004)J/MNRAS/351/1071 : POINT-AGAPE Survey. M31 variables (An+, 2004)J/A+A/402/113 : (RI)c photometry of variables in M31 (Joshi+, 2003)J/AJ/126/175 : M31Y eclipsing binaries and Cepheids (Bonanos+, 2003)J/ApJ/504/113 : F175W and F275W photometry of M31 and M32 (Brown+, 1998)J/A+AS/126/401 : M 31 Cepheids periods (Magnier+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/745/156https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/745/156http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/745/156https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/745/156https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/745/156http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/745/156GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/745/156/table1 (M31 Cepheids in WFC3 F160W and F110W)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/745/156/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/745/156/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/745/156/table1?GETtext/xml+votable180.050000true10.8962419441.2588750.0055555555555555566/2623 2666 2709 27521.1796835550914393e-19 2.052997531460547e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/745/156?format=asciiInfrareddefaultJ/ApJ/745/156/table1M31 Cepheids in WFC3 F160W and F110WrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[10.81/11.58] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[41.15/42.22] Declination (J2000)degpos.eq.dec;meta.mainIDIdentification (1)meta.id;meta.maincharPer[10/78] Perioddtime.periodfloatF160W[16/19.3] HST/WFC3 F160W magnitude (2)magphot.mag;em.IR.Hfloate_F160W[0.03/0.05] F160W uncertainty (2)magstat.errorfloatF110W[16.5/19.7] HST/WFC3 F110W magnitudemagphot.mag;em.IR.Jfloate_F110W[0.02/0.2] F110W uncertaintymagstat.errorfloatBias[0/0.02] Photometric biasmagstat.errorfloat[O/H][8.8/9.1] Metallicity, 12+log[O/H] based on Zaritsky et al. (1994ApJ...420...87Z)phys.abundfloatD31Cross-match within 3" with DIRECT catalog (J/AJ/126/175)meta.ref.urlintnullablePS1Cross-match within 3" Kodric et al. 2013 (Cat. J/AJ/145/106)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar