J/ApJ/794/120 Sloan Digital Sky Survey coadd. Stripe 82 (Annis+, 2014)
The Sloan Digital Sky Survey coadd:
275 deg2 of deep Sloan Digital Sky Survey imaging on stripe 82.
Annis J., Soares-Santos M., Strauss M.A., Becker A.C., Dodelson S., Fan X.,
Gunn J.E., Hao J., Ivezic Z., Jester S., Jiang L., Johnston D.E.,
Kubo J.M., Lampeitl H., Lin H., Lupton R.H., Miknaitis G., Seo H.-J.,
Simet M., Yanny B.
<Astrophys. J., 794, 120 (2014)>
=2014ApJ...794..120A 2014ApJ...794..120A (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Photometry, SDSS
Keywords: atlases - catalogs - surveys
Abstract:
We present details of the construction and characterization of the
coaddition of the Sloan Digital Sky Survey (SDSS) Stripe 82 ugriz
imaging data. This survey consists of 275 deg2 of repeated scanning
by the SDSS camera over -50°≤α≤60° and
-1.25°≤δ≤ +1.25° centered on the Celestial Equator.
Each piece of sky has ∼20 runs contributing and thus reaches ∼2mag
fainter than the SDSS single pass data, i.e., to r∼23.5 for
galaxies. We discuss the image processing of the coaddition, the
modeling of the point-spread function (PSF), the calibration, and the
production of standard SDSS catalogs. The data have an r-band median
seeing of 1.1'' and are calibrated to ≤1%. Star color-color, number
counts, and PSF size versus modeled size plots show that the modeling
of the PSF is good enough for precision five-band photometry.
Structure in the PSF model versus magnitude plot indicates minor PSF
modeling errors, leading to misclassification of stars as galaxies, as
verified using VVDS spectroscopy. There are a variety of uses for this
wide-angle deep imaging data, including galactic structure,
photometric redshift computation, cluster finding and cross wavelength
measurements, weak lensing cluster mass calibrations, and cosmic shear
measurements.
Description:
A coadd reduction of SDSS data on Stripe 82. Photometric parameters
for a large fraction of the SDSS Stripe 82 deep coadd.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 615 6377638 SDSS Stripe 82 catalogue (November 2017 version)
S82-11.17.fits 2880 597910 FITS version of the catalog
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See also:
J/ApJS/210/22 : Herschel Stripe 82 survey (HerS) first catalog (Viero+ 2014)
J/MNRAS/440/476 : Low-redshift quasars in SDSS Stripe 82 (Falomo+, 2014)
J/MNRAS/441/1802 : Low-redshift QSOs in SDSS Stripe 82 (Karhunen+, 2014)
J/A+A/578/A79 : Galaxy clusters in SDSS Stripe 82 (Durret+, 2015)
J/ApJ/799/72 : Binary AGNs from the VLA Stripe 82 survey (Fu+, 2015)
J/A+A/594/A32 : 3XMM/SDSS Stripe 82 Galaxy Cluster Survey. I. (Takey+, 2016)
J/ApJ/817/172 : X-ray Observations of Stripe 82 (LaMassa+, 2016)
J/MNRAS/456/1359 : IAC Stripe 82 Legacy Project: Photometry (Fliri+, 2016)
J/MNRAS/457/2703 : Local SDSS galaxies in Herschel Stripe 82 (Rosario+, 2016)
J/MNRAS/460/4433 : SDSS Stripe 82 VLA 1-2GHz survey (Heywood+, 2016)
J/AJ/154/269 : A new photo-z method for quasars in Stripe 82 (Yang+, 2017)
J/ApJ/834/160 : ugriz colors of RR Lyrae in SDSS Stripe 82 (Ngeow+, 2017
J/MNRAS/480/707 : Stripe 82 1-2 GHz VLA Snapshot Survey (Prescott+, 2018)
J/A+A/611/A97 : Photometric QSO candidates in Stripe 82 (Pasquet-Itam+ 2018)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- objID SDSS unique object identifier (objID)
21- 33 F13.9 deg RAdeg [] Right ascension (ICRS) (ra)
35- 47 F13.9 deg DEdeg Declination (ICRS) (dec)
49- 50 I2 --- skyVersion [15] skyVersion (skyVersion)
52- 54 I3 --- run Run number (run)
56 I1 --- rerun Rerun number (rerun)
58 I1 --- camcol Camcol number (camcol)
60- 62 I3 --- Field Field number (field)
64- 67 I4 --- obj Object id within the field (obj)
69 I1 --- Mode mode number (mode)
71 I1 --- nChild nChild number (nChild)
73 I1 --- Type [3/6] Typei (3=galaxy, 6=styar) (type)
75- 82 F8.6 --- probPSF Probability that the object is a star
(probPSF)
84 I1 --- insideMask [0] Flag to indicate whether object is
inside a mask and why (insideMask)
86-105 I20 --- Flags Photo Object Attribute Flags (flags)
107-126 I20 --- Flagsu u-band Photo Object Attribute Flags (flags_u)
128-147 I20 --- Flagsg g-band Photo Object Attribute Flags (flags_g)
149-168 I20 --- Flagsr r-band Photo Object Attribute Flags (flags_r)
170-189 I20 --- Flagsi i-band Photo Object Attribute Flags (flags_i)
191-210 I20 --- Flagsz z-band Photo Object Attribute Flags (flags_z)
212-221 F10.4 mag upmag ?=-9999 PSF u magnitude (psfMag_u)
223-229 F7.4 mag gpmag PSF g magnitude, AB scale (psfMag_g)
231-237 F7.4 mag rpmag PSF r magnitude, AB scale (psfMag_r)
239-245 F7.4 mag ipmag PSF i magnitude, AB scale (psfMag_i)
247-253 F7.4 mag zpmag PSF z magnitude, AB scale (psfMag_z)
255-264 F10.4 mag e_upmag ?=-9999 rms uncertainty on upmag
(psfMagErr_u)
266-275 F10.4 mag e_gpmag ?=-9999 rms uncertainty on gpmag
(psfMagErr_g)
277-286 F10.4 mag e_rpmag ?=-9999 rms uncertainty on rpmag
(psfMagErr_r)
288-297 F10.4 mag e_ipmag ?=-9999 rms uncertainty on ipmag
(psfMagErr_i)
299-308 F10.4 mag e_zpmag ?=-9999 rms uncertainty on zpmag
(psfMagErr_z)
310-316 F7.4 mag ufmag Fiber u magnitude, AB scale (fiberMag_u)
318-324 F7.4 mag gfmag Fiber g magnitude, AB scale (fiberMag_g)
326-332 F7.4 mag rfmag Fiber r magnitude, AB scale (fiberMag_r)
334-340 F7.4 mag ifmag Fiber i magnitude, AB scale (fiberMag_i)
342-348 F7.4 mag zfmag Fiber z magnitude, AB scale (fiberMag_z)
350-359 F10.4 mag e_ufmag ?=-9999 rms uncertainty on ufmag
(fiberMagErr_u)
361-370 F10.4 mag e_gfmag ?=-9999 rms uncertainty on gfmag
(fiberMagErr_g)
372-381 F10.4 mag e_rfmag ?=-9999 rms uncertainty on rfmag
(fiberMagErr_r)
383-392 F10.4 mag e_ifmag ?=-9999 rms uncertainty on ifmag
(fiberMagErr_i)
394-403 F10.4 mag e_zfmag ?=-9999 rms uncertainty on zfmag
(fiberMagErr_z)
405-411 F7.4 mag uPmag Petrosian u magnitude, AB scale (petroMag_u)
413-419 F7.4 mag gPmag Petrosian g magnitude, AB scale (petroMag_g)
421-427 F7.4 mag rPmag Petrosian r magnitude, AB scale (petroMag_r)
429-435 F7.4 mag iPmag Petrosian i magnitude, AB scale (petroMag_i)
437-443 F7.4 mag zPmag Petrosian z magnitude, AB scale (petroMag_z)
445-454 F10.4 mag e_uPmag ?=-9999 rms uncertainty on uPmag
(petroMagErr_u)
456-465 F10.4 mag e_gPmag ?=-9999 rms uncertainty on gPmag
(petroMagErr_g)
467-476 F10.4 mag e_rPmag ?=-9999 rms uncertainty on rPmag
(petroMagErr_r)
478-487 F10.4 mag e_iPmag ?=-9999 rms uncertainty on iPmag
(petroMagErr_i)
489-498 F10.4 mag e_zPmag ?=-9999 rms uncertainty on zPmag
(petroMagErr_z)
500-509 F10.4 mag umag ?=-9999 Model u magnitude, AB scale
(modelMag_u)
511-517 F7.4 mag gmag Model g magnitude, AB scale (modelMag_g)
519-525 F7.4 mag rmag Model r magnitude, AB scale (modelMag_r)
527-533 F7.4 mag imag Model i magnitude, AB scale (modelMag_i)
535-541 F7.4 mag zmag Model z magnitude, AB scale (modelMag_z)
543-552 F10.4 mag e_umag ?=-9999 rms uncertainty on umag
(modelMagErr_u)
554-563 F10.4 mag e_gmag ?=-9999 rms uncertainty on gmag
(modelMagErr_g)
565-574 F10.4 mag e_rmag ?=-9999 rms uncertainty on rmag
(modelMagErr_r)
576-585 F10.4 mag e_imag ?=-9999 rms uncertainty on imag
(modelMagErr_i)
587-596 F10.4 mag e_zmag ?=-9999 rms uncertainty on zmag
(modelMagErr_z)
598-615 A18 --- Help [Herschel-Stripe-82] Help field (help_field)
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Acknowledgements:
Raphael Shirley, Raphael.Shirley(at)sussex.ac.uk
(End) Raphael Shirley [Sussex, UK], Patricia Vannier [CDS] 12-Jan-2019