Second amendment compilation of type Ia SNe Virtual Observatory Resource

Authors
  1. Boruah S.S.
  2. Hudson M.J.
  3. Lavaux G.
  4. Published by
    CDS
Abstract

The peculiar velocity field offers a unique way to probe dark matter density field on large scales at low redshifts. In this work, we have compiled a new sample of 465 peculiar velocities from low redshift (z<0.067) Type Ia supernovae. We compare the reconstructed velocity field derived from the 2M++ galaxy redshift compilation to the supernovae, the SFI++ and the 2MTF Tully-Fisher distance catalogues. We used a forward method to jointly infer the distances and the velocities of distance indicators by comparing the observations to the reconstruction. Comparison of the reconstructed peculiar velocity fields to observations allows us to infer the cosmological parameter combination f{sigma}_8_, and the bulk flow velocity arising from outside the survey volume. The residual bulk flow arising from outside the 2M++ volume is inferred to be 171^+11^_-11_km/s in the direction l=301{deg}+/-4{deg} and b=0{deg}+/-3{deg}. We obtain f{sigma}_8_=0.400+/-0.017, equivalent to S_8_~{sigma}_8_({Omega}_m_/0.3)^0.55^=0.776+/-0.033, which corresponds to an approximately 4 per cent statistical uncertainty on the value of f{sigma}_8_. Our inferred value is consistent with other low redshift results in the literature.

Keywords
  1. supernovae
  2. galaxies
  3. redshifted
  4. infrared-astronomy
Bibliographic source Bibcode
2020MNRAS.498.2703B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/2703
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/498/2703

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/2703
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/2703
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/2703
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/498/2703/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/498/2703/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/498/2703/table2?

History

2023-11-03T12:07:54Z
Resource record created
2023-11-03T11:13:19Z
Updated
2023-11-03T12:07:54Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr