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A First Look at Cepheids in a Type Ia Supernova Host with JWST

  • Authors: Wenlong Yuan, Adam G. Riess, Stefano Casertano, Lucas M. Macri

Wenlong Yuan et al 2022 The Astrophysical Journal Letters 940 .

  • Provider: AAS Journals

Caption: Figure 3.

Near-infrared period–luminosity relations for Cepheids in the range ﹩1.35\lt \mathrm{log}P\lt 1.75﹩ (baseline results) measured with HST and JWST. The JWST sample (red) includes 24 Cepheids observed in F200W (2μm). The HST sample includes 38 Cepheids from R22 with F160W magnitudes transformed to F200W using a color transformation based on their measured F555W–F814W colors and F160W–F200W. The inset shows the intercepts of the relations at ﹩\mathrm{log}P=1﹩. The solid red curve uses the JWST PSF photometry calibrated to P330E.

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