SDSS Data Management and Photometric Quality Assessment

Abstract

We summarize the Sloan Digital Sky Survey data acquisition and processing steps, and describe runQA, a pipeline designed for automated data quality assessment. In particular, we show how the position of the stellar locus in color-color diagrams can be used to estimate the accuracy of photometric zeropoint calibration to better than 0.01 mag in 0.03 deg2 patches. Using this method, we estimate that typical photometric zeropoint calibration errors for SDSS imaging data are not larger than ~0.01 mag in the g, r, and i bands, 0.02 mag in the z band, and 0.03 mag in the u band (root-mean-scatter for zeropoint offsets).

7 pages, color figures, published in AN 325, No. 6-8, 583-589

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• Galaxy clusters in the SDSS Stripe 82 based on galaxy photometric redshifts
• Detection of Far Infrared Emission from Galaxies and Quasars in the Galactic Extinction Map by Stacking Analysis
• SDSS J133401.39+331534.3: A New Subarcsecond Gravitationally Lensed Quasar
• Using Close White Dwarf + M Dwarf Stellar Pairs to Constrain the Flare Rates in Close Stellar Binaries
• Assessment of astronomical images using combined machine learning models
• The quasar-galaxy cross SDSS J1320+1644: A probable large-separation lensed quasar
• The Southern Flanking Fields of the 25 Orionis Group
• An astronomical image content-based recommendation system using combined deep learning models in a fully unsupervised mode
• Current star formation in early-type galaxies and the K+A phenomenon
• Multiwavelength study of the bright X-ray source population in the interacting galaxies NGC5774/NGC5775
• The stellar mass function and efficiency of galaxy formation with a varying initial mass function
• Faint NUV/FUV Standards from Swift/UVOT, GALEX and SDSS Photometry
• Photometric Accretion Signatures Near the Substellar Boundary
• The Astro-WISE approach to quality control for astronomical data
• DES Science Portal: Creating Science-Ready Catalogs
• SDSS Pre-Burst Observations of Recent Gamma-Ray Burst Fields
• Fragile Binary Candidates in the SDSS DR8 spectroscopic archive
• SDSSJ103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger
• Photometric calibration in u-band using blue halo stars
• Modeling the anomaly of surface number densities of galaxies on the Galactic extinction map due to their FIR emission contamination
• An Improved Photometric Calibration of the Sloan Digital Sky Survey Imaging Data
• An LBT view of the co-rotating group of galaxies around NGC 2750: Deep imaging and new satellite candidates
• Z-Sequence: Photometric redshift predictions for galaxy clusters with sequential random k-nearest neighbours
• Dark Energy Survey Year 1 Results: Photometric Data Set for Cosmology
• Far-UV Fe Emission as Proxy of Eddington Ratios
• Machine learning techniques for astrophysical modelling and photometric redshift estimation of quasars in optical sky surveys
• Particle Physics in the Sky and Astrophysics Underground: Connecting the Universe's Largest and Smallest Scales
• Image Stacking Analysis of SDSS Galaxies with AKARI Far-Infrared Surveyor Maps at 65μm, 90μm, and 140μm
• Statistical Properties of Blue Horizontal Branch Stars in the Spheroid: Detection of a Moving Group approximately 50 kpc from the Sun
• Extreme variability quasars from the Sloan Digital Sky Survey and the Dark Energy Survey
• Exploring the Variable Sky with the Sloan Digital Sky Survey
• Big Data in Astroinformatics -- Compression of Scanned Astronomical Photographic Plates
• The Fornax Deep Survey (FDS) with the VST: III. Low Surface Brightness (LSB) dwarfs and Ultra Diffuse Galaxies (UDGs) in the center of the Fornax cluster