The astrophysical distance scale. III. The WLM gal.

The local determination of the Hubble constant sits at a crossroad. Current estimates of the local expansion rate of the universe differ by about 1.7{sigma}, derived from the Cepheid- and TRGB-based calibrations, applied to Type Ia supernovae. To help elucidate possible sources of systematic error causing the tension, we show in this study the recently developed distance indicator, the J-region Asymptotic Giant Branch (JAGB) method, can serve as an independent cross-check and comparison with other local distance indicators. Furthermore, we make the case that the JAGB method has substantial potential as an independent, precise, and accurate calibrator of Type Ia supernovae for the determination of H0. Using the Local Group galaxy Wolf-Lundmark-Melotte (WLM), we present distance comparisons between the JAGB method, a TRGB measurement at near-infrared (JHK) wavelengths, a TRGB measurement in the optical I band, and a multiwavelength Cepheid period-luminosity relation determination. We find {mu}0(JAGB)=24.97{+/-}0.02(stat){+/-}0.04(sys)mag {mu}0(TRGB_NIR_)=24.98{+/-}0.04(stat){+/-}0.07(sys)mag {mu}0(TRGB_F814W_=24.93{+/-}0.02(stat){+/-}0.06(sys)mag {mu}0(Cepheids)=24.98{+/-}0.03(stat){+/-}0.04(sys)mag. All four methods are in good agreement, confirming the local self-consistency of the four distance scales at the 3% level and adding confidence that the JAGB method is as accurate and as precise a distance indicator as either of the other three astrophysically based methods.

Cone search capability for table J/ApJ/907/112/cepheids (Cepheids in the Local Group irregular galaxy WLM; table added by CDS and taken from Pietrzynski+ 2007, J/AJ/134/594 (Table 1))

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/907/112
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/907/112
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/907/112
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/907/112
Provenance
Creator Lee A.J.; Freedman W.L.; Madore B.F.; Owens K.A.; Monson A.J.; Hoyt T.J.
Publisher CDS
Publication Year 2025
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy