J/MNRAS/456/1359 IAC Stripe 82 Legacy Project: Photometry (Fliri+, 2016)
The IAC Stripe 82 Legacy Project:
a wide-area survey for faint surface brightness astronomy.
Fliri J., Trujillo I.
<Mon. Not. R. Astron. Soc., 456, 1359-1373 (2016)>
=2016MNRAS.456.1359F 2016MNRAS.456.1359F (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Photometry, SDSS
Keywords: atlases - catalogues - surveys - stars: general - galaxies: general -
galaxies: interactions
Abstract:
We present new deep co-adds of data taken within Stripe 82 of the
Sloan Digital Sky Survey (SDSS), especially stacked to reach the
faintest surface brightness limits of this data set. Stripe 82 covers
275 square degrees within -50°≤RA≤+60° and
-1.26°≤DE≤+1.25°. We discuss the steps of our reduction
which puts special emphasis on preserving the characteristics of the
background (sky + diffuse light) in the input images using a
non-aggressive sky subtraction strategy. Our reduction reaches a limit
of ∼28.5 mag/arcsec2 (3σ, 10x10 arcsec2) in the r band. The
effective surface brightness limit (50 per cent completeness for
exponential light distribution) lies at <µe(r)≳25.5mag/arcsec2.
For point sources, we reach 50 per cent completeness limits (3σ
level) of (24.2, 25.2, 24.7, 24.3, 23.0) mag in (u, g, r, i, z). This
is between 1.7 and 2.0mag deeper than the single-epoch SDSS releases.
The co-adds show point spread functions (PSFs) with median full width
at half-maximum values ranging from 1-arcsec in i and z to 1.3-arcsec
in the u band. The imaging data are made publicly available at
http://www.iac.es/proyecto/stripe82. The release includes deep co-adds
and representations of the PSF for each field. Additionally, we
provide object catalogues with stars and galaxies confidently
separated until g∼23mag. The IAC Stripe 82 co-adds offer a rather
unique possibility to study the low surface brightness Universe,
exemplified by the discovery of stellar streams around NGC 0426 and
NGC 0936. We also discuss further science cases like stellar haloes
and disc truncations, low surface brightness galaxies, the
intracluster light in galaxy clusters and the diffuse emission of
Galactic dust known as Galactic Cirrus.
Description:
A new coadd image using 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 630 15368824 Photometric parameters for SDSS Stripe 82
(version September 2018)
iacstr82.fits 2880 3253375 fits version of the catalog
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See also:
V/141 : Light-Motion Curve Catalogue (LMCC) in Stripe 82
(Bramich+ 2008)
J/AJ/134/973 : SDSS Stripe 82 star catalogs (Ivezic+, 2007)
J/MNRAS/382/515 : Stripe 82 ultracool & halo WD candidates (Vidrih+, 2007)
J/MNRAS/398/1757 : RR Lyraes in SDSS stripe 82 (Watkins+, 2009)
J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010)
J/ApJS/186/233 : Variable point sources in Stripe 82. I. (Bhatti+, 2010)
J/A+A/525/A37 : Variability indexes of QSOs in Stripe 82 (Meusinger+ 2011)
J/other/RAA/11.309 : Nearby early-type galaxies in Stripe 82 (Jiang+, 2011)
J/AJ/142/3 : 1.4GHz observations of Stripe 82 (Hodge+, 2011)
J/ApJ/731/17 : Variability of low-mass stars in Stripe 82 (Becker+, 2011)
J/MNRAS/413/3059 : 4098 galaxy clusters in SDSS Stripe 82 (Geach+, 2011)
J/MNRAS/424/2528 : RR Lyrae in SDSS Stripe 82 (Suveges+, 2012)
J/ApJ/768/105 : z∼5 QSO luminosity function from Stripe 82 (McGreer+ 2013)
J/ApJ/769/125 : 1.4GHz radio variability in FIRST + SDSS Stripe 82
(Hodge+, 2013)
J/MNRAS/436/3581 : X-ray observations of Stripe 82 (LaMassa+, 2013)
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/MNRAS/439/1212 : Deep 20GHz survey of CDFS & SDSS Stripe 82 (Franzen+ 2014)
J/ApJS/210/22 : Herschel Stripe 82 survey (HerS) catalog (Viero+, 2014)
J/MNRAS/455/370 : Predicted LIR for SDSS galaxies (Ellison+, 2016)
J/A+A/578/A79 : Galaxy clusters in SDSS Stripe 82 (Durret+, 2015)
J/A+A/594/A32 : 3XMM/SDSS Stripe 82 Galaxy Cluster Survey. (Takey+, 2016)
J/ApJ/799/72 : Binary AGNs from the VLA Stripe 82 survey (Fu+, 2015)
J/ApJ/817/172 : X-ray Observations of Stripe 82 (LaMassa+, 2016)
J/ApJ/818/105 : CNSS pilot survey (Mooley+, 2016)
J/ApJ/824/70 : UV-FIR SED results of SDSS QSOs & their hosts (Dong+ 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/ApJ/834/160 : ugriz colors of RR Lyrae stars in Stripe 82 (Ngeow+, 2017)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- Seq [0/15368823] Sequential identification number
(sdssiacid)
10- 19 F10.6 deg RAdeg Right ascension (J2000) (ALPHA_J2000)
21- 30 F10.6 deg DEdeg Declination (J2000) (DELTA_J2000)
32- 38 F7.4 mag umag ?=99 SDSS AUTO u magnitude (uMAGAUTO)
40- 46 F7.4 mag umagP ?=99 SDSS PETRO u magnitude (uMAGPETRO)
48- 54 F7.4 mag umagAp1 ?=99 SDSS APER 1 magnitude (uMAGAPER_1)
56- 62 F7.4 mag umagAp2 ?=99 SDSS APER 2 magnitude (uMAGAPER_2)
64- 70 F7.4 mag umagAp3 ?=99 SDSS APER 3 magnitude (uMAGAPER_3)
72- 78 F7.4 mag umagAp4 ?=99 SDSS APER 4 magnitude (uMAGAPER_4)
80- 86 F7.4 mag e_umag ?=99 rms uncertainty on umag (uMAGERRAUTO)
88- 94 F7.4 mag e_umagP ?=99 rms uncertainty on umaP (uMAGERRPETRO)
96-102 F7.4 mag e_umagAp1 ?=99 rms uncertainty on umagAp1
(uMAGERRAPER_1)
104-110 F7.4 mag e_umagAp2 ?=99 rms uncertainty on umagAp2
(uMAGERRAPER_2)
112-118 F7.4 mag e_umagAp3 ?=99 rms uncertainty on umagAp3
(uMAGERRAPER_3)
120-126 F7.4 mag e_umagAp4 ?=99 rms uncertainty on umagAp4
(uMAGERRAPER_4)
128-139 E12.6 pix uFluxRad ?=0 SDSS u band flux (uFLUXRADIUS)
141-147 F7.4 mag gmag ?=99 SDSS AUTO g magnitude (gMAGAUTO)
149-155 F7.4 mag gmagP ?=99 SDSS PETRO g magnitude (gMAGPETRO)
157-163 F7.4 mag gmagAp1 ?=99 SDSS APER 1 g magnitude (gMAGAPER_1)
165-171 F7.4 mag gmagAp2 ?=99 SDSS APER 2 g magnitude (gMAGAPER_2)
173-179 F7.4 mag gmagAp3 ?=99 SDSS APER 3 g magnitude (gMAGAPER_3)
181-187 F7.4 mag gmagAp4 ?=99 SDSS APER 4 g magnitude (gMAGAPER_4)
189-195 F7.4 mag e_gmag ?=99 rms uncertainty on gmag (gMAGERRAUTO)
197-203 F7.4 mag e_gmagP ?=99 rms uncertainty on gmagP (gMAGERRPETRO)
205-211 F7.4 mag e_gmagAp1 ?=99 rms uncertainty on gmagAp1
(gMAGERRAPER_1)
213-219 F7.4 mag e_gmagAp2 ?=99 rms uncertainty on gmagAp2
(gMAGERRAPER_2)
221-227 F7.4 mag e_gmagAp3 ?=99 rms uncertainty on gmagAp3
(gMAGERRAPER_3)
229-235 F7.4 mag e_gmagAp4 ?=99 rms uncertainty on gmagAp4
(gMAGERRAPER_4)
237-248 E12.6 pix gFluxRad ?=0 SDSS g band flux (gFLUXRADIUS)
250-256 F7.4 mag rmag ?=99 SDSS AUTO r magnitude (rMAGAUTO)
258-264 F7.4 mag rmagP ?=99 SDSS PETRO r magnitude (rMAGPETRO)
266-272 F7.4 mag rmagAp1 ?=99 SDSS APER 1 r magnitude (rMAGAPER_1)
274-280 F7.4 mag rmagAp2 ?=99 SDSS APER 1 r magnitude (rMAGAPER_2)
282-288 F7.4 mag rmagAp3 ?=99 SDSS APER 1 r magnitude (rMAGAPER_3)
290-296 F7.4 mag rmagAp4 ?=99 SDSS APER 1 r magnitude (rMAGAPER_4)
298-304 F7.4 mag e_rmag ?=99 rms uncertainty on rmag (rMAGERRAUTO)
306-312 F7.4 mag e_rmagP ?=99 rms uncertainty on rmagP (rMAGERRPETRO)
314-320 F7.4 mag e_rmagAp1 ?=99 rms uncertainty on rmagAp1
(rMAGERRAPER_1)
322-328 F7.4 mag e_rmagAp2 ?=99 rms uncertainty on rmagAp2
(rMAGERRAPER_2)
330-336 F7.4 mag e_rmagAp3 ?=99 rms uncertainty on rmagAp3
(rMAGERRAPER_3)
338-344 F7.4 mag e_rmagAp4 ?=99 rms uncertainty on rmagAp4
(rMAGERRAPER_4)
346-357 E12.6 pix rFluxRad ?=0 SDSS r band flux (rFLUXRADIUS)
359-365 F7.4 mag imag ?=99 SDSS AUTO i magnitude (iMAGAUTO)
367-373 F7.4 mag imagP ?=99 SDSS PETRO i magnitude (iMAGPETRO)
375-381 F7.4 mag imagAp1 ?=99 SDSS APER 1 i magnitude (iMAGAPER_1)
383-389 F7.4 mag imagAp2 ?=99 SDSS APER 2 i magnitude (iMAGAPER_2)
391-397 F7.4 mag imagAp3 ?=99 SDSS APER 3 i magnitude (iMAGAPER_3)
399-405 F7.4 mag imagAp4 ?=99 SDSS APER 4 i magnitude (iMAGAPER_4)
407-413 F7.4 mag e_imag ?=99 rms uncertainty on imagR (iMAGERRAUTO)
415-421 F7.4 mag e_imagP ?=99 rms uncertainty on imagP (iMAGERRPETRO)
423-429 F7.4 mag e_imagAp1 ?=99 rms uncertainty on imagAp1
(iMAGERRAPER_1)
431-437 F7.4 mag e_imagAp2 ?=99 rms uncertainty on imagAp2
(iMAGERRAPER_2)
439-445 F7.4 mag e_imagAp3 ?=99 rms uncertainty on imagAp3
(iMAGERRAPER_3)
447-453 F7.4 mag e_imagAp4 ?=99 rms uncertainty on imagAp4
(iMAGERRAPER_4)
455-466 E12.6 pix iFluxRad ?=0 SDSS i band flux (iFLUXRADIUS)
468-474 F7.4 mag zmag ?=99 SDSS AUTO z magnitude (zMAGAUTO)
476-482 F7.4 mag zmagP ?=99 SDSS PETRO z magnitude (zMAGPETRO)
484-490 F7.4 mag zmagAp1 ?=99 SDSS APER 1 z magnitude (zMAGAPER_1)
492-498 F7.4 mag zmagAp2 ?=99 SDSS APER 2 z magnitude (zMAGAPER_2)
500-506 F7.4 mag zmagAp3 ?=99 SDSS APER 3 z magnitude (zMAGAPER_3)
508-514 F7.4 mag zmagAp4 ?=99 SDSS APER 4 z magnitude (zMAGAPER_4)
516-522 F7.4 mag e_zmag ?=99 rms uncertainty on zmag (zMAGERRAUTO)
524-530 F7.4 mag e_zmagP ?=99 rms uncertainty on zmagP (zMAGERRPETRO)
532-538 F7.4 mag e_zmagAp1 ?=99 rms uncertainty on zmagAp1
(zMAGERRAPER_1)
540-546 F7.4 mag e_zmagAp2 ?=99 rms uncertainty on zmagAp2
(zMAGERRAPER_2)
548-554 F7.4 mag e_zmagAp3 ?=99 rms uncertainty on zmagAp3
(zMAGERRAPER_3)
556-562 F7.4 mag e_zmagAp4 ?=99 rms uncertainty on zmagAp4
(zMAGERRAPER_4)
564-575 E12.6 pix zFluxRad ?=0 SDSS z band flux (zFLUXRADIUS)
577-582 F6.3 --- RadKron Kron radius (KRON_RADIUS)
584-589 F6.3 --- RadPetro Petrisoan radius (PETRO_RADIUS)
591-597 F7.3 pix Aimg Image major axis (A_IMAGE)
599-604 F6.3 pix Bimg Image minor axis (B_IMAGE)
606-612 F7.3 deg PAimg Image position angle (THETA_IMAGE)
614-619 F6.3 --- Elong Elongation (ELONGATION)
621-625 F5.3 --- Ellip Ellipticity (ELLIPTICITY)
627-628 I2 --- Flags Flags (FLAGS)
630 I1 --- S/G [0/1] Stellarity (stellarity)
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Acknowledgements:
Raphael Shirley, raphael.shirley(at)hotmail.co.uk
History:
19-Jan-2018: on-line version
27-Sep-2018: updated version
(End) Patricia Vannier [CDS] 16-Jan-2018