The sloan digital sky survey stripe 82 imaging data: Depth-optimized co-adds over 300 deg2 in five filters

Linhua Jiang, Xiaohui Fan, Fuyan Bian, Ian D. McGreer, Michael A. Strauss, James Annis, Zoë Buck, Richard Green, Jacqueline A. Hodge, Adam D. Myers, Alireza Rafiee, Gordon Richards

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We present and release co-added images of the Sloan Digital Sky Survey (SDSS) Stripe 82. Stripe 82 covers an area of 300 deg2 on the celestial equator, and has been repeatedly scanned 70-90 times in the ugriz bands by the SDSS imaging survey. By making use of all available data in the SDSS archive, our co-added images are optimized for depth. Input single-epoch frames were properly processed and weighted based on seeing, sky transparency, and background noise before co-addition. The resultant products are co-added science images and their associated weight images that record relative weights at individual pixels. The depths of the co-adds, measured as the 5σ detection limits of the aperture (3.″2 diameter) magnitudes for point sources, are roughly 23.9, 25.1, 24.6, 24.1, and 22.8 AB magnitudes in the five bands, respectively. They are 1.9-2.2 mag deeper than the best SDSS single-epoch data. The co-added images have good image quality, with an average point-spread function FWHM of 1″ in the r, i, and z bands. We also release object catalogs that were made with SExtractor. These co-added products have many potential uses for studies of galaxies, quasars, and Galactic structure. We further present and release near-IR J-band images that cover 90 deg2 of Stripe 82. These images were obtained using the NEWFIRM camera on the NOAO 4 m Mayall telescope, and have a depth of about 20.0-20.5 Vega magnitudes (also 5σ detection limits for point sources).

Original languageEnglish (US)
Article number12
JournalAstrophysical Journal, Supplement Series
Volume213
Issue number1
DOIs
StatePublished - Jul 1 2014

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filter
filters
point sources
point source
time measurement
galactic structure
background noise
equators
point spread functions
products
transparency
quasars
catalogs
sky
pixel
apertures
pixels
cameras
telescopes
galaxies

Keywords

  • atlases
  • catalogs
  • surveys

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

The sloan digital sky survey stripe 82 imaging data : Depth-optimized co-adds over 300 deg2 in five filters. / Jiang, Linhua; Fan, Xiaohui; Bian, Fuyan; McGreer, Ian D.; Strauss, Michael A.; Annis, James; Buck, Zoë; Green, Richard; Hodge, Jacqueline A.; Myers, Adam D.; Rafiee, Alireza; Richards, Gordon.

In: Astrophysical Journal, Supplement Series, Vol. 213, No. 1, 12, 01.07.2014.

Research output: Contribution to journalArticle

Jiang, L, Fan, X, Bian, F, McGreer, ID, Strauss, MA, Annis, J, Buck, Z, Green, R, Hodge, JA, Myers, AD, Rafiee, A & Richards, G 2014, 'The sloan digital sky survey stripe 82 imaging data: Depth-optimized co-adds over 300 deg2 in five filters', Astrophysical Journal, Supplement Series, vol. 213, no. 1, 12. https://doi.org/10.1088/0067-0049/213/1/12
Jiang, Linhua ; Fan, Xiaohui ; Bian, Fuyan ; McGreer, Ian D. ; Strauss, Michael A. ; Annis, James ; Buck, Zoë ; Green, Richard ; Hodge, Jacqueline A. ; Myers, Adam D. ; Rafiee, Alireza ; Richards, Gordon. / The sloan digital sky survey stripe 82 imaging data : Depth-optimized co-adds over 300 deg2 in five filters. In: Astrophysical Journal, Supplement Series. 2014 ; Vol. 213, No. 1.
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