Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM

@article{Riess2020CosmicDC,
  title={Cosmic Distances Calibrated to 1\% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with $\Lambda$CDM},
  author={Adam G. Riess and Stefano Casertano and Wenlong Yuan and J. Bradley Bowers and Lucas M. Macri and Joel C. Zinn and Dan Scolnic},
  journal={The Astrophysical Journal Letters},
  year={2020},
  volume={908}
}
We present an expanded sample of 75 Milky Way Cepheids with Hubble Space Telescope (HST) photometry and Gaia EDR3 parallaxes, which we use to recalibrate the extragalactic distance ladder and refine the determination of the Hubble constant. All HST observations were obtained with the same instrument (WFC3) and filters (F555W, F814W, F160W) used for imaging of extragalactic Cepheids in Type Ia supernova (SN Ia) hosts. The HST observations used the WFC3 spatial scanning mode to mitigate… 

Unbiased likelihood-free inference of the Hubble constant from light standard sirens

Francesca Gerardi, Stephen M. Feeney , and Justin Alsing Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom Oskar Klein Centre for

Toward a concordance teleparallel cosmology. Part II. Linear perturbation

Late time cosmic acceleration may be achieved by modifying gravity on large scales. This should also have consequences on the evolution of perturbations. We thus extend our study of exponential

Chameleon dark energy can resolve the Hubble tension

The values of Hubble constant between the direct measurements from various independent local observations and that inferred from the cosmic microwave background with Λ-cold-dark-matter model are in

w−M phantom transition at zt<0.1 as a resolution of the Hubble tension

A rapid transition of the dark energy equation of state parameter $w$ at a transition redshift $z_t z_t$ to $w z_t$. Such a Late $w$ Phantom Transition ($LwPT$) avoids the discontinuity of $H(z)$

Trouble beyond H0 and the new cosmic triangles

José Luis Bernal, Licia Verde, 3 Raul Jimenez, 3 Marc Kamionkowski, David Valcin, and Benjamin D. Wandelt 5, 6 Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles

Scale invariance, horizons, and inflation

Maxwell equations and the equations of General Relativity are scale invariant in empty space. The presence of charge or currents in electromagnetism or the presence of matter in cosmology are

Constraints on ΛCDM extensions from the SPT-3G 2018 EE and TE power spectra

TLDR
A look at the key players, players and coaches from the 2016-17 season that helped determine the winners and runners-up in the Women's Champions League of Europe.

An Updated Metal-dependent Theoretical Scenario for Classical Cepheids

To properly quantify the possible residual systematic errors affecting the classical Cepheid distance scale, a detailed theoretical scenario is recommended. By extending the set of nonlinear,

Exploring the Hubble Tension and Spatial Curvature from the Ages of Old Astrophysical Objects

We use the age measurements of 114 old astrophysical objects (OAO) in the redshift range 0 ≲ z ≲ 8 to explore the Hubble tension. The age of the universe at any z is inversely proportional to the

Implications of an Extended Dark Energy Model with Massive Neutrinos

Recently there have been reports of finding a lower bound on the neutrino mass parameter (Σm ν ) when using the Atacama Cosmology Telescope (ACT) and SPTpol data; however, these bounds on the Σm ν
...

References

SHOWING 1-10 OF 14 REFERENCES

The Milky Way Cepheid Leavitt law based on Gaia DR2 parallaxes of companion stars and host open cluster populations

Aims. Classical Cepheids provide the foundation for the empirical extragalactic distance ladder. Milky Way Cepheids are the only stars in this class accessible to trigonometric parallax measurements.

Calibration of the WFC3-IR Count-rate Nonlinearity, Sub-percent Accuracy for a Factor of a Million in Flux

Previous analyses have shown that WFC3-IR suffers a count-rate dependent non-linearity of about 1% per dex, an order of magnitude smaller than the prior HgCdTe detector, NICMOS, flown on HST, but

Gaia Data Release 2

Context. The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the first 22 months

Calibration of the WFC3-IR

  • 2018

2016a, A&A, 595

  • 2016

Gaia Data Release 2. The astrometric solution

Context. Gaia Data Release 2 ( Gaia DR2) contains results for 1693 million sources in the magnitude range 3 to 21 based on observations collected by the European Space Agency Gaia satellite during

Gaia Early Data Release 3

Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter

Gaia Data Release 2

Context. For Gaia DR2, 280 million spectra collected by the Radial Velocity Spectrometer instrument on board Gaia were processed, and median radial velocities were derived for 9.8 million sources

WFC3/UVIS Shutter Characterization

A series of internal flat field images and standard star observations were obtained to check the shutter performance. The series of images were similar to the ones taken during SMOV so that the

Confirmation of the Gaia DR2 Parallax Zero-point Offset Using Asteroseismology and Spectroscopy in the Kepler Field

We present an independent confirmation of the zero-point offset of Gaia Data Release 2 parallaxes using asteroseismic data of evolved stars in the Kepler field. Using well-characterized red giant