| Source: |
Uddin, S A, Burns, C R, Phillips, M M, Suntzeff, N B, Freedman, W L, Brown, P J, Morrell, N, Hamuy, M, Krisciunas, K, Wang, L, Hsiao, E Y, Goobar, A, Perlmutter, S, Lu, J, Stritzinger, M, Anderson, J P, Ashall, C, Hoeflich, P, Shappee, B J, Persson, S E, Piro, A L, Baron, E, Contreras, C, Galbany, L, Kumar, S, Shahbandeh, M, Davis, S, Anais, J, Busta, L, Campillay, A, Castellon, S, Corco, C, Diamond, T, Gall, C, Gonzalez, C, Holmbo, S, Roth, M, Seron, J, Taddia, F, Torres, S, Baltay, C, Folatelli, G, Hadjiyska, E, Kasliwal, M, .... |
| Description: |
We present an analysis of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project I and II and extend the Hubble diagram from optical to near-infrared wavelengths (uBgVriYJH). We calculate the Hubble constant, H 0 , using various distance calibrators: Cepheids, the tip of the red giant branch (TRGB), and surface brightness fluctuations (SBFs). Combining all methods of calibration, we derive H 0 = 71.76 ± 0.58 (stat) ± 1.19 (sys) km s −1 Mpc −1 from the B band and H 0 = 73.22 ± 0.68 (stat) ± 1.28 (sys) km s −1 Mpc −1 from the H band. By assigning equal weight to the Cepheid, TRGB, and SBF calibrators, we derive the systematic errors required for consistency in the first rung of the distance ladder, resulting in a systematic error of 1.2 ∼ 1.3 km s −1 Mpc −1 in H 0 . As a result, relative to the statistics-only uncertainty, the tension between the late-time H 0 we derive by combining the various distance calibrators and the early-time H 0 from the cosmic microwave background is reduced. The highest precision in SN Ia luminosity is found in the Y band (0.12 ± 0.01 mag), as defined by the intrinsic scatter (σ int ). We revisit SN Ia Hubble residual-host mass correlations and recover previous results that these correlations do not change significantly between the optical and near-infrared wavelengths. Finally, SNe Ia that explode beyond 10 kpc from their host centers exhibit smaller dispersion in their luminosity, confirming our earlier findings. A reduced effect of dust in the outskirts of hosts may be responsible for this effect. |