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Fixing the U-band photometry of Type Ia supernovae

Authordc.contributor.authorKrisciunas, Kevin 
Authordc.contributor.authorBastola, Deepak es_CL
Authordc.contributor.authorEspinoza, Juan es_CL
Authordc.contributor.authorGonzález, David es_CL
Authordc.contributor.authorGonzález, Luis es_CL
Authordc.contributor.authorGonzález Tagle, Sergio es_CL
Authordc.contributor.authorHamuy Wackenhut, Mario es_CL
Authordc.contributor.authorHsiao, Eric es_CL
Authordc.contributor.authorMorrell, Nidia es_CL
Authordc.contributor.authorPhillips, Mark M. es_CL
Authordc.contributor.authorSuntzeff, Nicholas B. es_CL
Cita de ítemdc.identifier.citationThe Astronomical Journal, 145:11 (7pp), 2013 Januaryen_US
General notedc.descriptionArtículo de publicación ISI.en_US
Abstractdc.description.abstractWe present previously unpublished photometry of supernovae 2003gs and 2003hv. Using spectroscopically derived corrections to the U-band photometry, we reconcile U-band light curves made from imagery with the Cerro Tololo 0.9 m, 1.3 m, and Las Campanas 1 m telescopes. Previously, such light curves showed a 0.4 mag spread at one month after maximum light. This gives us hope that a set of corrected ultraviolet light curves of nearby objects can contribute to the full utilization of rest-frame U-band data of supernovae at redshift ∼0.3–0.8. As pointed out recently by Kessler et al. in the context of the Sloan Digital Sky Survey supernova search, if we take the published U-band photometry of nearby Type Ia supernovae at face value, there is a 0.12 mag U-band anomaly in the distance moduli of higher redshift objects. This anomaly led the Sloan survey to eliminate from their analyses all photometry obtained in the rest-frame U-band. The Supernova Legacy Survey eliminated observer frame U-band photometry, which is to say nearby objects observed in the U-band, but they used photometry of high-redshift objects no matter in which band the photons were emitted.en_US
Publisherdc.publisherIOP Publishingen_US
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectsupernovae: individual (SN 2003gs, SN 2003hv)en_US
Títulodc.titleFixing the U-band photometry of Type Ia supernovaeen_US
Document typedc.typeArtículo de revistaen_US

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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile