Reddening law of type Ia supernovae

DOI

We employ 76 type Ia supernovae (SNe Ia) with optical spectrophotometry within 2.5 days of B-band maximum light obtained by the Nearby Supernova Factory to derive the impact of Si and Ca features on the supernovae intrinsic luminosity and determine a dust reddening law. We use the equivalent width of SiII {lambda}4131 in place of the light curve stretch to account for first-order intrinsic luminosity variability. The resulting empirical spectral reddening law exhibits strong features that are associated with CaII and SiII {lambda}6355. After applying a correction based on the CaII H&K equivalent width we find a reddening law consistent with a Cardelli extinction law. Using the same input data, we compare this result to synthetic rest-frame UBVRI-like photometry to mimic literature observations.

Identifier
DOI https://doi.org/10.26093/cds/vizier.35299004
Source https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/529/L4
Related Identifier https://ui.adsabs.harvard.edu/abs/2011A&A...529L...4C
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_datacite&identifier=ivo://CDS.VizieR/J/A+A/529/L4
Provenance
Creator Chotard N.; Gangler E.; Aldering G.; Antilogus P.; Aragon C.; Bailey S.; Baltay C.; Bongard S.; Buton C.; Canto A.; Childress M.; Copin Y.; Fakhouri H.K.; Hsiao E.Y.; Kerschhaggl M.; Kowalski M.; Loken S.; Nugent P.; Paech K.; Pain R.; Pecontal E.; Pereira R.; Perlmutter S.; Rabinowitz D.; Runge K.; Scalzo R.; Smadja G.; Tao C.; Thomas R.C.; Weaver B.A.; Wu C.; (The Nearby Supernova Factory)
Publisher CDS
Contributor International Virtual Observatory Alliance (IVOA)
Publication Year 2011
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Service
Format text/xml+votable
Discipline Observational Astronomy;Stellar Astronomy