J/ApJ/886/61ivo://CDS.VizieR/J/ApJ/886/61doi:10.26093/cds/vizier.18860061CDSYuan W.Riess A.G.Macri L.M.Casertano S.Scolnic D.M.2022-05-12T13:20:54Z2021-04-30T12:53:48ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsgiant-starshst-photometryinfrared-photometryvisible-astronomyphotometryWe present a calibration of the tip of the red giant branch (TRGB) in the Large Magellanic Cloud (LMC) on the Hubble Space Telescope (HST)/ACS F814W system. We use archival HST observations to derive blending corrections and photometric transformations for two ground-based wide-area imaging surveys of the Magellanic Clouds. We show that these surveys are biased bright by up to ~0.1mag in the optical due to blending, and that the bias is a function of local stellar density. We correct the LMC TRGB magnitudes from Jang & Lee (2017ApJ...835...28J) and use the geometric distance from Pietrzynski+ (2019Natur.567..200P) to obtain an absolute TRGB magnitude of M_F814W_=-3.97+/-0.046mag. Applying this calibration to the TRGB magnitudes from Freedman+ (2019ApJ...882...34F) in SN Ia hosts yields a value for the Hubble constant of H_0_=72.4+/-2.0km/s/Mpc for their TRGB+SNe Ia distance ladder. The difference in the TRGB calibration and the value of H_0_ derived here and by Freedman+ primarily results from their overestimate of the LMC extinction, caused by inconsistencies in their different sources of TRGB photometry for the Magellanic Clouds. Using the same source of photometry (OGLE) for both Clouds and applying the aforementioned corrections yields a value for the LMC I-band TRGB extinction that is lower by 0.06mag, consistent with independent OGLE reddening maps used by us and by Jang & Lee to calibrate TRGB and determine H0.2019ApJ...886...61Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/886/61CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)II/322 : OGLE-III. Magellanic Clouds stellar proper motions (Poleski+, 2012)II/351 : VISTA Magellanic Survey (VMC) catalog (Cioni+, 2011)J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)J/AcA/49/437 : BVI photometry of OGLE SMC Cepheids (Udalski+, 1999)J/PASP/111/812 : V(RI)C Phot of Cepheids in Magellanic Clouds (Barnes+ 1999)J/AJ/123/3216 : BV photometry of variable stars in SMC (Sharpee+, 2002)J/AJ/123/855 : Magellanic Clouds Photometric Survey: the SMC (Zaritsky+, 2002)J/AJ/128/1606 : Magellanic Clouds Phot. Survey (MCPS): LMC (Zaritsky+, 2004)J/MNRAS/353/705 : OGLE Variables in Magellanic Clouds (Ita+, 2004)J/MNRAS/361/1055 : BVI photometry of LMC Be stars (Sabogal+, 2005)J/A+A/430/421 : Reddening in LMC bar region (Subramaniam, 2005)J/AJ/131/407 : BV photometry of stars in the LMC (Kaluzny+, 2006)J/AcA/58/163 : VI light curves of LMC classical Cepheids (Soszynski+, 2008)J/AcA/59/239 : VI light curves of LMC long-period variables (Soszynski+, 2009)J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)J/AcA/61/199 : OGLE3 Magellanic Clouds High PM stars (Poleski+, 2011)J/ApJ/730/119 : HST/WFC3 observations of Cepheids in SN Ia hosts (Riess+, 2011)J/AJ/142/61 : RGB stars in LMC outer disk (Carrera+, 2011)J/AcA/63/159 : LMC OGLE-III Shallow Survey variable stars (Ulaczyk+, 2013)J/AJ/149/117 : LMC infrared survey. I. Photometry of Cepheids (Macri+, 2015)J/AcA/65/297 : OGLE4 LMC and SMC Cepheids (Soszynski+, 2015)J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)J/AJ/153/154 : LMC NIR survey. IV. Type II Cepheid variables (Bhardwaj+, 2017)J/ApJ/845/146 : The Carnegie-Chicago Hubble Program. II. IC 1613 (Hatt+, 2017)J/AJ/154/149 : LMC NIR synoptic survey. V. NIR phot. of Miras (Yuan+, 2017)J/ApJ/860/1 : Radial velocity measurements of 20 EBs in LMC (Graczyk+, 2018)J/ApJ/876/85 : HST observations for LMC Cepheids (Riess+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/886/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/886/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/886/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/886/61https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/886/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/886/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/886/61/table1 (Summary of HST observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/886/61/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/886/61/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/886/61/table1?GETtext/xml+votable180.050000true73.81569-68.205380.005555555555555556Cone search capability for table J/ApJ/886/61/table2 (HST photometry for 12 LMC fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/886/61/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/886/61/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/886/61/table2?GETtext/xml+votable180.050000true73.91254111-68.181941940.005555555555555556Cone search capability for table J/ApJ/886/61/table6 (SMC tip of the red giant branch (TRGB)-like stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/886/61/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/886/61/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/886/61/table6?GETtext/xml+votable180.050000true12.90837-73.373390.0055555555555555565/8323 8326 8329 6/33053 33077 33079 33090-33091 33096-33098 33100 33120 33122 33287 33289 33291 33298 33313 33315 33321 33328-333302.3657755224268815e-19 3.829809573510641e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/886/61?format=asciiOpticalInfrareddefaultJ/ApJ/886/61/table1Summary of HST observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintField[1755/2107] NGC numbermeta.id;meta.mainintprimaryDateDate of observation (UT)time.epochnullableRAJ2000[73.7/85.9] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-70.9/-68.2] Declination (J2000)degpos.eq.dec;meta.mainExpV[20/170] F555W exposure timestime.duration;obs.exposure;em.opt.VintExpI[20/120] F814W exposure timestime.duration;obs.exposure;em.opt.IintNpNumber of HST photometry measurements in this field (link to Table 2)meta.numberintnullableJ/ApJ/886/61/table2HST photometry for 12 LMC fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldNGC identifier for HST fieldsmeta.id.parentintID[1000160/13086534] Internal photometry IDmeta.id;meta.mainintRAJ2000[73.66/85.95] Right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000[-70.86/-68.16] Declination (J2000) (1)degpos.eq.dec;meta.mainF814Wmag[14.49/17.5] HST/ACS F814W magnitude (2)magphot.mag;em.opt.Ifloate_F814Wmag[0.001/0.05] 1{sigma} uncertainty in F814Wmagmagstat.errorfloatF555Wmag[14.3/24.3] HST/ACS F555W magnitudemagphot.mag;em.opt.Vfloate_F555Wmag[0.001/0.3] 1{sigma} uncertainty in F555Wmagmagstat.errorfloatJ/ApJ/886/61/table6SMC tip of the red giant branch (TRGB)-like starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[5.77/20.11] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-74.8/-71.26] Declination (J2000)degpos.eq.dec;meta.mainV-OGLE[16.26/16.82] OGLE V magnitudemagphot.mag;em.opt.VfloatI-OGLE[14.85/15.05] OGLE I magnitudemagphot.mag;em.opt.IfloatV-MCPS[15.4/20.01] MCPS V magnitudemagphot.mag;em.opt.VfloatI-MCPS[14.3/15.7] MCPS I magnitudemagphot.mag;em.opt.Ifloat