SN 2011dh (type IIb) 3.6 and 4.5um light curves

DOI

We present Spitzer observations at 3.6 and 4.5{mu}m of the supernova SN 2011dh (PTF 11eon) in M51 from 18 days to 625 days after explosion. The mid-infrared emission peaks at 24 days after explosion at a few x10^7^L {sun}, and decays more slowly than the visible-light bolometric luminosity. The infrared color temperature cools for the first 90 days and then is constant. Simple numerical models of a thermal echo can qualitatively reproduce the early behavior. At late times, the mid-IR light curve cannot be explained by a simple thermal echo model, suggesting additional dust heating or line emission mechanisms. We also propose that thermal echoes can serve as effective probes to uncover supernovae in heavily obscured environments, and speculate that under the right conditions, integrating the early epoch of the mid-infrared light curve may constrain the total energy in the shock breakout flash.

Identifier
DOI http://doi.org/10.26093/cds/vizier.17789019
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/778/L19
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/778/L19
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/778/L19
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/778/L19
Provenance
Creator Helou G.; Kasliwal M.M.; Ofek E.O.; Arcavi I.; Surace J.; Gal-Yam A.
Publisher CDS
Publication Year 2015
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; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy