JWST TRGB distances to 10 SN Ia hosts update calibrations for 11 SNe yielding H0 of 68.4-69.6 km/s/Mpc and show modest shifts when combined with prior HST data.
B., Rizzi, L., Shaya, E
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Homogeneous [Fe/H] measurements for 334 Local Volume galaxies reveal a luminosity-metallicity relation [Fe/H] = -2.6 - 0.075 M_B with a distribution peaking at -1.89 dex.
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The Chicago Carnegie Hubble Program: Improving the Calibration of SNe Ia with JWST Measurements of the Tip of the Red Giant Branch
JWST TRGB distances to 10 SN Ia hosts update calibrations for 11 SNe yielding H0 of 68.4-69.6 km/s/Mpc and show modest shifts when combined with prior HST data.
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The Metal Content of Resolved Galaxies
Homogeneous [Fe/H] measurements for 334 Local Volume galaxies reveal a luminosity-metallicity relation [Fe/H] = -2.6 - 0.075 M_B with a distribution peaking at -1.89 dex.