Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

The Pantheon+ Analysis: Evaluating Peculiar Velocity Corrections in Cosmological Analyses with Nearby Type Ia Supernovae

Journal Article · · The Astrophysical Journal
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [6];  [3];  [8];  [3];  [3];  [6]
  1. Duke Univ., Durham, NC (United States); Duke Univ., Durham, NC (United States)
  2. Johns Hopkins Univ., Baltimore, MD (United States)
  3. Duke Univ., Durham, NC (United States)
  4. Johns Hopkins Univ., Baltimore, MD (United States); Space Telescope Science Institute, Baltimore, MD (United States)
  5. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  6. Univ. of Queensland, Brisbane, QLD (Australia)
  7. Univ. of Lyon (France)
  8. Univ. of California, Santa Cruz, CA (United States)
+ Show Author Affiliations
Separating the components of redshift due to expansion and peculiar motion in the nearby universe (z < 0.1) is critical for using Type Ia Supernovae (SNe Ia) to measure the Hubble constant (H0) and the equation-of-state parameter of dark energy (w). Here, we study the two dominant "motions" contributing to nearby peculiar velocities: large-scale, coherent-flow (CF) motions and small-scale motions due to gravitationally associated galaxies deemed to be in a galaxy group. We use a set of 584 low-z SNe from the Pantheon+ sample, and evaluate the efficacy of corrections to these motions by measuring the improvement of SN distance residuals. We study multiple methods for modeling the large and small-scale motions and show that, while group assignments and CF corrections individually contribute to small improvements in Hubble residual scatter, the greatest improvement comes from the combination of the two (relative standard deviation of the Hubble residuals, Rel. SD, improves from 0.167 to 0.157 mag). We find the optimal flow corrections derived from various local density maps significantly reduce Hubble residuals while raising H0 by ~0.4 km s-1 Mpc-1 as compared to using CMB redshifts, disfavoring the hypothesis that unrecognized local structure could resolve the Hubble tension. We estimate that the systematic uncertainties in cosmological parameters after optimally correcting redshifts are 0.06–0.11 km s-1 Mpc-1 in H0 and 0.02–0.03 in w which are smaller than the statistical uncertainties for these measurements: 1.5 km s-1 Mpc-1 for H0 and 0.04 for w.
Research Organization:
Duke Univ., Durham, NC (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); USDOE Office of Science (SC)
Grant/Contract Number:
SC0010007
OSTI ID:
2419952
Journal Information:
The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 2 Vol. 938; ISSN 0004-637X
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (91)

SOUSA: the Swift Optical/Ultraviolet Supernova Archive journal July 2014
Turning noise into signal: Learning from the scatter in the Hubble diagram journal September 2016
The Pantheon+ analysis: Improving the redshifts and peculiar velocities of Type Ia supernovae used in cosmological analyses journal January 2022
The 2dF Galaxy Redshift Survey: spectra and redshifts journal December 2001
The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints journal November 2010
Astropy: A community Python package for astronomy journal September 2013
Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples journal August 2014
Planck 2018 results: I. Overview and the cosmological legacy of Planck journal September 2020
Velocity correction for Hubble constant measurements from standard sirens journal February 2021
Groups of galaxies. I - Nearby groups journal June 1982
The redshift-distance and velocity-distance laws journal January 1993
On the prediction of velocity fields from redshift space galaxy samples journal January 1994
[ITAL]BVRI[/ITAL] Light Curves for 22 Type I[CLC]a[/CLC] Supernovae journal February 1999
Maximum Likelihood Comparisons of Tully‐Fisher and Redshift Data: Constraints on Ω and Biasing journal September 1997
The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant journal February 2000
The Velocity Field from Type Ia Supernovae Matches the Gravity Field from Galaxy Surveys journal October 1997
Cosmological Parameters from the Comparison of the 2MASS Gravity Field with Peculiar Velocity Surveys journal December 2005
UBVRI Light Curves of 44 Type Ia Supernovae journal January 2006
The Two Micron All Sky Survey (2MASS) journal February 2006
Groups of Galaxies in the Two Micron All Sky Redshift Survey journal February 2007
The Peculiar Velocities of Local Type Ia Supernovae and Their Impact on Cosmology journal May 2007
COSMICFLOWS-2 : THE DATA journal September 2013
Galaxy Groups: a 2mass Catalog journal April 2015
CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA journal July 2009
IMPROVED DARK ENERGY CONSTRAINTS FROM ∼100 NEW CfA SUPERNOVA TYPE Ia LIGHT CURVES journal July 2009
HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES journal May 2010
THE EFFECT OF HOST GALAXIES ON TYPE Ia SUPERNOVAE IN THE SDSS-II SUPERNOVA SURVEY journal September 2010
PHOTOMETRIC TYPE Ia SUPERNOVA CANDIDATES FROM THE THREE-YEAR SDSS-II SN SURVEY DATA journal August 2011
The Seventh data Release of the Sloan Digital sky Survey journal May 2009
First-Year Sloan Digital sky Survey-Ii Supernova Results: Hubble Diagram and Cosmological Parameters journal October 2009
Supernova Constraints and Systematic Uncertainties from the First Three Years of the Supernova Legacy Survey journal December 2010
The 2mass Redshift Survey—Description and data Release journal March 2012
CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE journal May 2012
Local gravitational redshifts can bias cosmological measurements journal July 2015
The need for accurate redshifts in supernova cosmology journal January 2017
The large-scale distribution of IRAS galaxies and the predicted peculiar velocity field journal September 1991
Optical galaxies within Formula - IV. The peculiar velocity field journal January 1994
Standard siren speeds: improving velocities in gravitational-wave measurements of H0 journal January 2020
The impact of peculiar velocities on the estimation of the Hubble constant from gravitational wave standard sirens journal April 2020
The 2MASS redshift survey galaxy group catalogue derived from a graph-theory based friends-of-friends algorithm journal July 2020
Joint analysis of 6dFGS and SDSS peculiar velocities for the growth rate of cosmic structure and tests of gravity journal July 2020
Cosmic flows in the nearby Universe: new peculiar velocities from SNe and cosmological constraints journal August 2020
The effects of peculiar velocities in SN Ia environments on the local H 0 measurement journal November 2020
Assessing the accuracy of cosmological parameters estimated from velocity – density comparisons via simulations journal January 2021
Peculiar-velocity cosmology with Types Ia and II supernovae journal May 2021
Constrained realizations of 2MRS density and peculiar velocity fields: growth rate and local flow journal July 2021
Peculiar velocities in the local Universe: comparison of different models and the implications for H 0 and dark matter journal August 2021
The 6dF Galaxy Survey: cosmological constraints from the velocity power spectrum journal September 2014
The 6dF Galaxy Survey: peculiar velocity field and cosmography journal October 2014
Cosmological parameters from the comparison of peculiar velocities with predictions from the 2M++ density field journal April 2015
Galaxy groups in the low-redshift Universe journal June 2017
The Foundation Supernova Survey: motivation, design, implementation, and first data release journal December 2017
Bulk flow in the combined 2MTF and 6dFGSv surveys journal April 2018
The peculiar velocity field up to z ∼ 0.05 by forward-modelling Cosmicflows-3 data journal January 2019
Can redshift errors bias measurements of the Hubble Constant? journal September 2019
Lick Observatory Supernova Search follow-up program: photometry data release of 93 Type Ia supernovae journal October 2019
First cosmology results using Type Ia supernova from the Dark Energy Survey: simulations to correct supernova distance biases journal February 2019
Complementarity of peculiar velocity surveys and redshift space distortions for testing gravity journal January 2020
Cosmological Constraints from Type Ia Supernovae Peculiar Velocity Measurements journal August 2007
Matplotlib: A 2D Graphics Environment journal January 2007
The NumPy Array: A Structure for Efficient Numerical Computation journal March 2011
The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures journal October 2009
The dependence of Type Ia Supernovae luminosities on their host galaxies: SN Ia host galaxies journal May 2010
The 2M++ galaxy redshift catalogue: The 2M++ galaxy redshift catalogue journal August 2011
Pippin: A pipeline for supernova cosmology journal March 2020
Cosmicflows-3 journal August 2016
A 2.4% Determination of the Local Value of the Hubble Constant journal July 2016
The Carnegie Supernova Project. I. Third Photometry Data Release of Low-redshift Type Ia Supernovae and Other White Dwarf Explosions journal November 2017
Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions journal June 2018
Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples journal February 2017
Measuring the Growth Rate of Structure with Type IA Supernovae from LSST journal September 2017
The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample journal May 2018
Should Type Ia Supernova Distances Be Corrected for Their Local Environments? journal November 2018
The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant journal December 2018
First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation journal April 2019
The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant journal April 2019
Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics beyond ΛCDM journal May 2019
The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope journal August 2019
The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch journal August 2019
Assessment of Systematic Uncertainties in the Cosmological Analysis of the SDSS Supernovae Photometric Sample journal February 2020
Effects of Supernova Redshift Uncertainties on the Determination of Cosmological Parameters journal October 2020
It’s Dust: Solving the Mysteries of the Intrinsic Scatter and Host-galaxy Dependence of Standardized Type Ia Supernova Brightnesses journal March 2021
The Hubble Constant from Infrared Surface Brightness Fluctuation Distances* journal April 2021
On the Hubble Constant Tension in the SNe Ia Pantheon Sample journal May 2021
The Pantheon+ Analysis: The Full Data Set and Light-curve Release journal October 2022
The Pantheon+ Analysis: Cosmological Constraints journal October 2022
The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point Observatory journal December 2017
The 2MASS Redshift Survey in the Zone of Avoidance journal November 2019
A Standard Siren Measurement of the Hubble Constant from GW170817 without the Electromagnetic Counterpart journal January 2019
The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints journal February 2020
A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team journal July 2022

Similar Records

The Pantheon+ Analysis: The Full Data Set and Light-curve Release
Journal Article · Tue Oct 18 20:00:00 EDT 2022 · The Astrophysical Journal · OSTI ID:1893974
The Pantheon+ Analysis: Cosmological Constraints
Journal Article · Tue Oct 18 20:00:00 EDT 2022 · The Astrophysical Journal · OSTI ID:1902943

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Astronomy &amp; Astrophysics
Cosmological parameters
Cosmology
Galaxy groups
Hubble constant
Type Ia supernovae