Second amendment compilation of type Ia SNe

DOI

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.

Cone search capability for table J/MNRAS/498/2703/table2 (Second amendment compilation)

Identifier
DOI http://doi.org/10.26093/cds/vizier.74982703
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/498/2703
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/2703
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/2703
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/498/2703
Provenance
Creator Boruah S.S.; Hudson M.J.; Lavaux G.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy