J/ApJ/808/11ivo://CDS.VizieR/J/ApJ/808/11doi:10.26093/cds/vizier.18080011CDSNeeley J.R.Marengo M.Bono G.Braga V.F.Dall'Ora M.Stetson P.B.,Buonanno R.Ferraro I.Freedman W.L.Iannicola G.Madore B.F.,Matsunaga N.Monson A.Persson S.E.Scowcroft V.Seibert M.2017-12-18T07:57:10Z2015-12-11T12:19:17ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryglobular-star-clustersNew mid-infrared (MIR) period-luminosity (PL) relations are presented for RR Lyrae variables in the globular cluster M4 (NGC 6121). Accurate photometry was obtained for 37 RR Lyrae variables using observations from the Infrared Array Camera on board the Spitzer Space Telescope. The dispersion of M4's PL relations is 0.056, and the uncertainty in the slope is 0.11mag. Additionally, we established calibrated PL relations at 3.6 and 4.5{mu}m using published Hubble Space Telescope geometric parallaxes of five Galactic RR Lyrae stars. The resulting band-averaged distance modulus for M4 is {mu}=11.399+/-0.007(stat)+/-0.080(syst)+/-0.015(cal)+/-0.020(ext). The systematic uncertainty will be greatly reduced when parallaxes of more stars become available from the GAIA mission. Optical and infrared period-color (PC) relations are also presented, and the lack of an MIR PC relation suggests that RR Lyrae stars are not affected by CO absorption in the 4.5{mu}m band.2015ApJ...808...11Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/808/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/A+A/573/A70 : UBVI photometry in 3 globular clusters (Nardiello+, 2015)J/A+A/563/A80 : Wide field imagers astrometry. V. (Libralato+, 2014)J/PASP/126/521 : UBVRIJHK photometry of RR Lyrae in M4 (Stetson+, 2014)J/MNRAS/442/2381 : Variable stars in M4 primary field (Nascimbeni+, 2014)J/MNRAS/440/L96 : RR Lyrae AllWise photometry (Klein+, 2014)J/MNRAS/435/3206 : Properties of field RR Lyrae variables (Dambis+, 2013)J/AJ/145/43 : CASE. V. Three eclipsing binaries in M4 (Kaluzny+, 2013)J/AcA/62/357 : Proper motions in 6 globular clusters (Zloczewski+, 2012)J/ApJ/759/146 : Spitzer/IRAC phot. for 37 Galactic Cepheids (Monson+, 2012)J/ApJ/743/76 : Spitzer photometry of LMC Cepheids (Scowcroft+, 2011)J/AJ/142/187 : HST obs. of 7 Pop. II variable stars (Benedict+, 2011)J/A+A/527/A146 : CoRoT 0105288363 light curves (Chadid+, 2011)J/PASP/121/1378 : Positions of variable stars in GCs (Samus+, 2009)J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)J/AcA/53/93 : OGLE RR Lyrae in LMC (Soszynski+, 2003)J/ApJS/120/265 : HST photometry of M4 (Ibata+, 1999)J/AJ/114/189 : M 4 CCD photometry (Alcaino+, 1997)J/PAZh/22/847 : Identification and coordinates in M4 (Shokin+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/808/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/808/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/808/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/808/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/808/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/808/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/808/11/table2 (Mean IRAC magnitudes and amplitudes for the RR Lyrae stars in M4)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/808/11/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/808/11/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/808/11/table2?GETtext/xml+votable180.050000true245.8069583-26.51488890.0055555555555555566/429553.9193497546148093e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/808/11?format=asciiInfrareddefaultJ/ApJ/808/11/table2Mean IRAC magnitudes and amplitudes for the RR Lyrae stars in M4recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNpDisplay the photometry measures for this starmeta.numberintnullableIDRR Lyrae name (1)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainPer[0.2/0.9] Perioddtime.perioddoublelogP[-0.7/-0.06] log(P) valuelog(d)stat.value;arith.zpdouble[3.6][10.4/11.5]? 3.6um band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6][0.007/0.04]? [3.6] uncertaintymagstat.errorfloatnullablef_[3.6][c] Flag on [3.6] (2)meta.codechar[4.5][10.4/11.5]? 4.5um band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5][0.006/0.04]? [4.5] uncertaintymagstat.errorfloatnullablef_[4.5][c] Flag on [4.5] (2)meta.codechar3.6amp[0.04/0.4]? 3.6um amplitudemagsrc.var.amplitude;em.IR.3-4umfloatnullablee_3.6amp[0.01/0.06]? 3.6amp uncertaintymagstat.errorfloatnullable4.5amp[0.04/0.4]? 4.5um amplitudemagsrc.var.amplitude;em.IR.4-8umfloatnullablee_4.5amp[0.01/0.06]? 4.5amp uncertaintymagstat.errorfloatnullableModeRR Lyrae mode ("RRc" or "RRab") (3)em.freqcharf_Mode[*] *: candidate Blazhko starsmeta.codecharLCIR light curvesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/808/11/table1Photometry for RR Lyrae in M4recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDRR Lyrae namemeta.id;meta.maincharMJD3.6? Modified Julian Date of 3.6 micron observationdtime.epochdoublenullable3.6mag[10.4/11.6]? Spitzer/IRAC 3.6 micron band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_3.6mag[0.003/0.2]? The 1{sigma} error in 3.6magmagstat.errorfloatnullableMJD4.5? Modified Julian Date of 4.5 micron observationdtime.epochdoublenullable4.5mag[10.3/11.6]? Spitzer/IRAC 4.5 micron band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_4.5mag[0.003/0.2]? The 1{sigma} error in 4.5magmagstat.errorfloatnullable