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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731656.0, MPI für Astronomie / Publikationen_mpia
Hypercalibration: A Pan-STARRS1-based recalibration of the Sloan Digital Sky Survey photometry
Authors:Finkbeiner, D. P.; Schlafly, E. F.; Schlegel, D. J.; Padmanabhan, N.; Jurić, M.; Burgett, W. S.; Chambers, K. C.; Denneau, L.; Draper, P. W.; Flewelling, H.; Hodapp, K. W.; Kaiser, N.; Magnier, E. A.; Metcalfe, N.; Morgan, J. S.; Price, P. A.; Stubbs, C. W.; Tonry, J. L.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:The Astrophysical Journal
Volume:822
Issue / Number:2
Start Page:id. 66 (12 pp)
Audience:Not Specified
Abstract / Description:We present a recalibration of the Sloan Digital Sky Survey (SDSS) photometry with new flat fields and zero points derived from Pan-STARRS1. Using point-spread function (PSF) photometry of 60 million stars with 16 < r < 20, we derive a model of amplifier gain and flat-field corrections with per-run rms residuals of 3 millimagnitudes (mmag) in griz bands and 15 mmag in u band. The new photometric zero points are adjusted to leave the median in the Galactic north unchanged for compatibility with previous SDSS work. We also identify transient non-photometric periods in SDSS (“contrails”) based on photometric deviations co-temporal in SDSS bands. The recalibrated stellar PSF photometry of SDSS and PS1 has an rms difference of {9, 7, 7, 8} mmag in griz, respectively, when averaged over 15‧ regions.
Free Keywords:methods: data analysis; surveys; techniques: photometric
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X
URL:http://cdsads.u-strasbg.fr/abs/2016ApJ...822...66F
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