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A PRECISION PHOTOMETRIC COMPARISON BETWEEN SDSS-II AND CSP TYPE Ia SUPERNOVA DATA
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2012 (English)In: Astronomical Journal, ISSN 0004-6256, E-ISSN 1538-3881, Vol. 144, no 1, 17- p.Article in journal (Refereed) Published
Abstract [en]

Consistency between Carnegie Supernova Project (CSP) and SDSS-II Supernova Survey ugri measurements has been evaluated by comparing Sloan Digital Sky Survey (SDSS) and CSP photometry for nine spectroscopically confirmed Type Ia supernova observed contemporaneously by both programs. The CSP data were transformed into the SDSS photometric system. Sources of systematic uncertainty have been identified, quantified, and shown to be at or below the 0.023 mag level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011 mag in ugri, with rms scatter ranging from 0.043 to 0.077 mag. The u-band agreement is promising, with the caveat that only four of the nine supernovae are well observed in u and these four exhibit an 0.038 mag supernova-to-supernova scatter in this filter.

Place, publisher, year, edition, pages
2012. Vol. 144, no 1, 17- p.
Keyword [en]
supernovae: general, techniques: photometric
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-80720DOI: 10.1088/0004-6256/144/1/17ISI: 000305418600017OAI: oai:DiVA.org:su-80720DiVA: diva2:557213
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AuthorCount:13;

Available from: 2012-09-27 Created: 2012-09-27 Last updated: 2017-12-07Bibliographically approved

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The Oskar Klein Centre for Cosmo Particle Physics (OKC)
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