The Tip of the Red Giant Branch Distances to Typa Ia Supernova Host Galaxies. V. NGC 3021, NGC 3370, and NGC 1309 and the Value of the Hubble Constant

Journal Article · Fri Feb 10 00:00:00 EST 2017 · Astrophysical Journal

DOI:https://doi.org/10.3847/1538-4357/836/1/74· OSTI ID:22869383

Jang, In Sung

We present final results of a program for the determination of the Hubble constant based on the calibration of the Type Ia supernovae (SNe Ia) using the Tip of the Red Giant Branch (TRGB). We report TRGB distances to three SN Ia host galaxies, NGC 3021, NGC 3370, and NGC 1309. We obtain F555W and F814W photometry of resolved stars from the archival Hubble Space Telescope data. Luminosity functions of red giant stars in the outer regions of these galaxies show the TRGB to be at F814W ≈ QT = 28.2 ∼ 28.5 mag. From these TRGB magnitudes and the revised TRGB calibration based on two distance anchors (NGC 4258 and the LMC) in Jang and Lee (2017; Paper IV), we derive the distances: (m−M){sub 0}=32.178±0.033 for NGC 3021, 32.253 ± 0.041 for NGC 3370, and 32.471 ± 0.040 for NGC 1309. We update our previous results on the TRGB distances to five SN Ia host galaxies using the revised TRGB calibration. By combining the TRGB distance estimates to SN Ia host galaxies in this study with the SN Ia calibration provided by Riess et al. (2011), we obtain a value of the Hubble constant: H {sub 0} = 71.66 ± 1.80(random) ± 1.88(systematic) km s{sup −1} Mpc{sup −1} (a 3.6% uncertainty including systematics) from all eight SNe, and H {sub 0} = 73.72 ± 2.03 ± 1.94 km s{sup −1} Mpc{sup −1} (a 3.8% uncertainty) from six low-reddened SNe. We present our best estimate, H {sub 0} = 71.17 ± 1.66 ± 1.87 km s{sup −1} Mpc{sup −1} (a 3.5% uncertainty) from six low-reddened SNe with the recent SN Ia calibration in Riess et al. (2016). This value is between those from the Cepheid calibrated SNe Ia and those from the Cosmic Microwave Background analysis, lowering the Hubble tension.

• OSTI ID: 22869383
• Journal Information: Astrophysical Journal, Vol. 836, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CALIBRATION
CEPHEIDS
GALAXIES
LUMINOSITY
PHOTOMETRY
RANDOMNESS
RED GIANT STARS
RED SHIFT
RELICT RADIATION
SPACE
TELESCOPES
TYPE I SUPERNOVAE