SNe Ia type LF study

We construct the Type Ia supernovae (SNe Ia) luminosity function (LF) using the Zwicky Transient Facility Bright Transient Survey (BTS) catalogue. While this magnitude-limited survey has an unprecedented number of objects, it suffers from large distance uncertainties and lacks an estimation of host extinction. We bypass these issues by calculating the intrinsic luminosities from the shape parameters of the light curve's g and r bands, with the luminosities calibrated from the well observed SNe Ia sample of the Carnegie Supernova Project, allowing us to construct, for the first time, the intrinsic LF of SNe Ia. We then use a novel tight relation between the colour stretch and the synthesized 56Ni mass, MNi56, to determine the MNi56 distribution of SNe Ia. We find that the LFs are unimodal, with their peaks in line with previous results, but have a much lower rate of dim events and luminous events. We show that the features on top of the unimodal LF-derived distributions are all compatible with statistical noise, consistent with a single progenitor channel for the explosions. We further derive, for the first time, the SNe Ia distribution of host galaxy extinction, and find a mean selective extinction of E(B-V) ~= 0.1 and a non-negligible fraction with large, >1mag, extinction in the optical bands. The high extinction is typical for luminous SNe, supporting their young population origin.

Cone search capability for table J/MNRAS/509/5275/tabled1 (CSP SNe Ia sloan filters g- and r-band colour stretches, decline rates, and luminosity parameters)

Cone search capability for table J/MNRAS/509/5275/tabled2 (CSP SNe Ia Johnson filters B- and V-band colour stretches, decline rates, and luminosity parameters)

Cone search capability for table J/MNRAS/509/5275/tabled3 (ZTF BTS SNe Ia sloan filters g- and r-band colour stretches, decline rates and luminosity parameters)

Cone search capability for table J/MNRAS/509/5275/tabled4 (LOSS SNe Ia Johnson filters B- and V-band colour stretches and decline rates)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/509/5275
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/509/5275
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/509/5275
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/509/5275
Provenance
Creator Sharon A.; Kushnir D.
Publisher CDS
Publication Year 2024
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; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy