The DESI DR1 Peculiar Velocity Survey: global zero-point and $H_0$ constraints

Abstract

The Dark Energy Spectroscopic Instrument (DESI) in its first Data Release (DR1) already provides more than 100,000 galaxies with relative distance measurements. The primary purpose of this paper is to perform the calibration of the zero-point for the DESI Fundamental Plane and Tully-Fisher relations, which allows us to measure the Hubble constant, $H_0$. This sample has a lower statistical uncertainty than any previously used to measure $H_0$, and we investigate the systematic uncertainties in absolute calibration that could limit the accuracy of that measurement. We improve upon the DESI Early Data Release Fundamental Plane $H_0$ measurement by a) using a group catalog to increase the number of calibrator galaxies and b) investigating alternative calibrators in the nearby Universe. Our baseline measurement calibrates to the SH0ES/Pantheon+ type Ia supernovae, and finds $H_0=73.7\pm 0.06(\text{stat.})\pm 1.1(\text{syst.})$ km s${}^{-1}$ Mpc${}^{-1}$. Calibrating to surface brightness fluctuation (SBF) distances yields a similar $H_0$. We explore measurements using other calibrators, but these are currently less precise since the overlap with DESI peculiar velocity tracers is much smaller. In future data releases with an even larger peculiar velocity sample, we plan to calibrate directly to Cepheids and the tip of the red giant branch, which will enable the uncertainty to decrease towards a percent-level measurement of $H_0$. This will provide an alternative to supernovae as the Hubble flow sample for $H_0$ measurements.

arXiv comment22 pages, 13 figures. Updated to match published version

References in corpus (42)

• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
• A 2.4% Determination of the Local Value of the Hubble Constant
• Overview of the DESI Legacy Imaging Surveys
• The Pantheon+ Analysis: Cosmological Constraints
• The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
• Bilby: A user-friendly Bayesian inference library for gravitational-wave astronomy
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
• The Megamaser Cosmology Project. XIII. Combined Hubble constant constraints
• An Improved Distance to NGC 4258 and its Implications for the Hubble Constant
• Cosmological parameters from the comparison of peculiar velocities with predictions from the 2M++ density field
• DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
• The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument
• The 2M++ galaxy redshift catalogue
• The Robotic Multi-Object Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
• DESI 2024 VII: Cosmological Constraints from the Full-Shape Modeling of Clustering Measurements
• Cosmicflows-4
• Small Magellanic Cloud Cepheids Observed with the Hubble Space Telescope Provide a New Anchor for the SH0ES Distance Ladder
• Galaxy groups in the low-redshift Universe
• The Pantheon+ Analysis: Improving the Redshifts and Peculiar Velocities of Type Ia Supernovae Used in Cosmological Analyses
• Surface Brightness Fluctuations in the Hubble Space Telescope ACS/WFC F814W Bandpass and an Update on Galaxy Distances
• The Pantheon+ Analysis: Evaluating Peculiar Velocity Corrections in Cosmological Analyses with Nearby Type Ia Supernovae
• The Next Generation Virgo Cluster Survey (NGVS). XVIII. Measurement and Calibration of Surface Brightness Fluctuation Distances for Bright Galaxies in Virgo (and Beyond)
• The Extragalactic Distance Database: The Color-Magnitude Diagrams and Tip of the Red Giant Branch Distances Catalog
• Cosmicflows-4: The Catalog of ~10000 Tully-Fisher Distances
• The Radial Tully-Fisher relation for spiral galaxies I
• Can redshift errors bias measurements of the Hubble Constant?
• Large Magellanic Cloud Near-Infrared Synoptic Survey. II. The Wesenheit relations and their application to the Distance scale
• Infrared Surface Brightness Fluctuation Distances for MASSIVE and Type Ia Supernova Host Galaxies
• Peculiar-velocity cosmology with Types Ia and II supernovae
• Target Selection for the DESI Peculiar Velocity Survey
• DESI Peculiar Velocity Survey -- Fundamental Plane
• A Cepheid-Based Distance to the Seyfert Galaxy NGC 6814
• Correcting for peculiar velocities of Type Ia Supernovae in clusters of galaxies
• Two per cent measurement of $H_0$ from Cepheids alone
• The DESI DR1 Peculiar Velocity Survey: growth rate measurements from the maximum likelihood fields method
• Improving the Determination of Supernova Cosmological Redshifts by Using Galaxy Groups
• Detection of supernova magnitude fluctuations induced by large-scale structure