J/MNRAS/451/724ivo://CDS.VizieR/J/MNRAS/451/724doi:10.26093/cds/vizier.74510724CDSWagner-Kaiser R.Sarajedini A.Dalcanton J.J.Williams B.F.Dolphin A.2024-08-15T20:14:03Z2016-02-12T09:43:30ZCDS support team

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

cds-question@unistra.frgalaxiesvariable-starshst-photometryUsing Hubble Space Telescope Advanced Camera for Surveys (HST/ACS) and Wide Field Camera 3 (WFC3) observations from the Panchromatic Hubble Andromeda Treasury (PHAT), we present new period-luminosity (P-L) relations for Cepheid variables in M31. Cepheids from several ground-based studies are identified in the PHAT photometry to derive new P-L and Wesenheit P-L relations in the near infrared and visual filters. We derive a distance modulus to M31 of 24.51+/-0.08 in the IR bands and 24.32+/-0.09 in the visual bands, including the first P-L relations in the F_475W_ and F_814W_ filters for M31. Our derived visual and IR distance moduli disagree at slightly more than a 1{sigma} level. Differences in the P-L relations between ground-based and HST observations are investigated for a subset of Cepheids. We find a significant discrepancy between ground-based and HST P-L relations with the same Cepheids, suggesting adverse effects from photometric contamination in ground-based Cepheid observations. Additionally, a statistically significant radial trend in the P-L relation is found which does not appear to be explained by metallicity.2015MNRAS.451..724Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/451/724CatalogResearchIsServedByTAP 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/126/175 : M31Y eclipsing binaries and Cepheids (Bonanos+, 2003)J/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)J/ApJ/762/123 : PHAT. IV. Initial Mass Function (Weisz+, 2013)J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/451/724https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/451/724http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/451/724https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/451/724https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/451/724http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/451/724GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/451/724/table1 (Complete Cepheid sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/724/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/724/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/724/table1?GETtext/xml+votable180.050000true10.9193741.212610.005555555555555556Cone search capability for table J/MNRAS/451/724/table2 (DIRECT Cepheid sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/451/724/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/451/724/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/451/724/table2?GETtext/xml+votable180.050000true11.0220341.234510.0055555555555555566/2623 2666 2709 27521.0590977079788917e-19 2.706461185444514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/451/724?format=asciidefaultJ/MNRAS/451/724/table1Complete Cepheid sampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF475WF475W magnitudemagphot.mag;em.opt.Bfloate_F475Wrms uncertainty on F475Wmagstat.errorfloatF814WF814W magnitudemagphot.mag;em.opt.Ifloate_F814Wrms uncertainty on F874Wmagstat.errorfloatF110W? F110W magnitudemagphot.mag;em.IR.Hfloatnullablee_F110Wrms uncertainty on F110Wmagstat.errorfloatF160W? F160W magnitudemagphot.mag;em.IR.Hfloatnullablee_F160Wrms uncertainty on F160Wmagstat.errorfloatPerPerioddtime.periodfloatSourceSource of data (1)meta.codecharJ/MNRAS/451/724/table2DIRECT Cepheid sampleSimbadNameSimbad column added by the CDSmeta.idcharPerPerioddtime.periodfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDIRECTDIRECT name (1)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF475WF475W magnitudemagphot.mag;em.opt.Bfloate_F475Wrms uncertainty on F475Wmagstat.errorfloatF814WF814W magnitudemagphot.mag;em.opt.Ifloate_F814Wrms uncertainty on F874Wmagstat.errorfloat