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A precision photometric comparison between SDSS-II and CSP type IA supernova data

机译:A precision photometric comparison between SDSS-II and CSP type IA supernova data

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摘要

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 0.023mag level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011mag in ugri, with rms scatter ranging from 0.043 to 0.077mag. 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 0.038mag supernova-to-supernova scatter in this filter.

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  • 来源
    《The Astronomical journal》 |2012年第1期|17-1-17-17|共17页
  • 作者单位

    Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan;

    Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, United States;

    Department of Astronomy, MSC 4500, New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003, United StatesDepartment of Physics and Astronomy, Rutgers, State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854, United StatesCenter for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, United StatesLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileOskar Klein Centre for Cosmo Particle Physics, AlbaNova University Center, Stockholm 106 91, SwedenDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, United StatesDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, United States;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 天文学;
  • 关键词

    supernovae: general; techniques: photometric;

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