A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data

J. Mosher; M. Sako; L. Corlies; G. Folatelli; J. Frieman; J. Holtzman; S.W. Jha; R. Kessier; J. Marriner; M.M. Phillips; Maximilian David Stritzinger

doi:10.1088/0004-6256/144/1/17

A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data

J. Mosher, M. Sako, L. Corlies, G. Folatelli, J. Frieman, J. Holtzman, S.W. Jha, R. Kessier, J. Marriner, M.M. Phillips, Maximilian David Stritzinger

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Abstract

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.

Original language	English
Journal	Astronomical Journal
Volume	144
Issue number	1
Pages (from-to)	17
ISSN	0004-6256
DOIs	https://doi.org/10.1088/0004-6256/144/1/17
Publication status	Published - 1 Jul 2012

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10.1088/0004-6256/144/1/17

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title = "A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data",

abstract = "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.",

author = "J. Mosher and M. Sako and L. Corlies and G. Folatelli and J. Frieman and J. Holtzman and S.W. Jha and R. Kessier and J. Marriner and M.M. Phillips and Stritzinger, {Maximilian David}",

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T1 - A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data

AU - Mosher, J.

AU - Sako, M.

AU - Corlies, L.

AU - Folatelli, G.

AU - Frieman, J.

AU - Holtzman, J.

AU - Jha, S.W.

AU - Kessier, R.

AU - Marriner, J.

AU - Phillips, M.M.

AU - Stritzinger, Maximilian David

PY - 2012/7/1

Y1 - 2012/7/1

N2 - 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.

AB - 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.

U2 - 10.1088/0004-6256/144/1/17

DO - 10.1088/0004-6256/144/1/17

M3 - Journal article

SN - 0004-6256

VL - 144

SP - 17

JO - The Astronomical Journal

JF - The Astronomical Journal

IS - 1

ER -

A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data

Abstract

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