Cited by 109Cosmology and Gravitation TheoriesStellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Comparing Tip of the Red Giant Branch Distance Scales: An Independent Reduction of the Carnegie-Chicago Hubble Program and the Value of the Hubble Constant

Open access
Anand, Gagandeep S., Tully, R. Brent, Rizzi, Luca, Riess, Adam G., Yuan, Wenlong·2022·The Astrophysical Journal

Abstract

Abstract The tip of the red giant branch has been used to measure distances to 500 nearby galaxies with the Hubble Space Telescope (HST) which are available in the Color–Magnitude Diagrams and Tip of the Red Giant Branch (CMDs/TRGB) catalog on the Extragalactic Distance Database (EDD). Our established methods are employed to perform an independent reduction of the targets presented by the Carnegie-Chicago Hubble Program (CCHP) in the series of papers culminating in Freedman (2021). Our distinct methodology involves modeling the observed luminosity function of red giant branch and asymptotic giant branch stars, which differs from the edge-detection algorithms employed by the CCHP. We find excellent agreement between distances for 11 hosts with new imaging, all at D < 20 Mpc. However, we are unable to measure the TRGB for four hosts that use archival data designed to measure distances with Cepheids, all at D > 23 Mpc. With two new HST observations taken in the halo of the megamaser host NGC 4258, the first with the same ACS F606W and F814W filters and state of the electronics used for SN Ia hosts, we then calibrate our TRGB distance scale to the geometric megamaser distance. Using our TRGB distances, we find a value of the Hubble Constant of H 0 = 71.5 ± 1.8 km s−1 Mpc−1 when using either the Pantheon or Carnegie Supernova Project (CSP) samples of supernovae. In the future, the James Webb Space Telescope will extend measurements of the TRGB to additional hosts of SN Ia and surface-brightness fluctuation measurements for separate paths to H 0.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3847/1538-4357/ac68df

Cites

74 of 74 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The CCHP reanalysis of targets is shifted more in agreement with the SH0ES value.

    “the new independent reanalysis of the targets presented by the Carnegie-Chicago Hubble Program (CCHP) performed in [36] that is shifted more in agreement with the SH0ES value.”

    From Challenges of the Standard Cosmological Model (2022) · cites this paper as [36]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. de Vaucouleurs, G., de Vaucouleurs, A., Corwin, H. G. J., et al. 1991, Third Reference Catalogue of Bright Galaxies (New York, NY: Springer)
  2. Salaris, M., & Cassisi, S. 2005, Evolution of Stars and Stellar Populations (Weinheim: Wiley-VCH)

Cited by

Sorted by citations

Authors
Anand, G. S., Tully, R. B., Rizzi, L., Riess, A. G., & Yuan, W.
Affiliations
  • University of Hawaiʻi at Mānoa (US)
  • W.M. Keck Observatory (US)
  • Space Telescope Science Institute (US)
  • Johns Hopkins University (US)
Corresponding author
Anand, Gagandeep S.
Venue
The Astrophysical Journal
Published
2022-06-01
Volume
932
Issue
1
Pages
15
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W3187894162
Cited by
109
References
72
Citations by year
2026: 16 · 2025: 23 · 2024: 27 · 2023: 22 · 2022: 18 · 2021: 3
FWCI
9.00
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
HST (SNAP-15922)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
Keywords
tip of the red giant branch, Hubble constant, asymptotic giant branch stars, Type Ia supernovae, Pantheon sample, Carnegie Supernova Project, surface brightness fluctuations, Hubble Space Telescope imaging

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review