J/ApJS/269/46 SHELA survey. IV. Multiwavelength phot. cat. (Leung+, 2023)
The Spitzer-HETDEX Exploratory Large-Area survey.
IV. Model-based multiwavelength photometric catalog.
Leung G.C.K., Finkelstein S.L., Weaver J.R., Papovich C., Larson R.L.,
Chworowsky K., Ciardullo R., Gawiser E., Gronwall C., Jogee S.,
Kawinwanichakij L., Somerville R.S., Wold I.G.B., Yung L.Y.A.
<Astrophys. J. Suppl. Ser., 269, 46 (2023)>
=2023ApJS..269...46L 2023ApJS..269...46L
ADC_Keywords: Photometry, ugriz; Surveys; Infrared sources
Keywords: Surveys ; Catalogs ; Galaxies ; Photometry
Abstract:
We present a 0.3-4.5µm 16-band photometric catalog for the
Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers an
∼27deg2 field within the footprint of the Hobby-Eberly Telescope
Dark Energy Experiment (HETDEX). Here we present new DECam imaging and
an rizKs band-selected catalog of four million sources extracted using
a fully model-based approach. We validate our photometry by comparing
with the model-based DECam Legacy Survey. We analyze the differences
between model-based and aperture photometry by comparing with the
previous SHELA catalog, finding that our model-based photometry can
measure point sources to fainter fluxes and better capture the full
emission of resolved sources. The catalog is 80% (50%) complete at riz
∼24.7 (25.1) AB mag, and the optical photometry reaches a 5σ
depth of ∼25.5 AB mag. We measure photometric redshifts and achieve a
1σ scatter of Δz/(1+z) of 0.04 with available
spectroscopic redshifts at 0≤z≤1. This large-area, multiwavelength
photometric catalog, combined with spectroscopic information from
HETDEX, will enable a wide range of extragalactic science investigations.
Description:
We observed the Spitzer-HETDEX Exploratory Large-Area (SHELA) field
using the DECam imager on the Blanco 4m telescope at CTIO in the u,
g, r, i, and z filters. New data were obtained over three nights in
the 2019B semester (PI: Papovich; NOAO PID: 2019B-0080). Our program
also includes data obtained over five nights in the 2013B semester
presented in Wold+ (2019, J/ApJS/240/5 ; Paper II). The complete
program consists of eight slightly overlapping pointings covering a
total area of 23deg2.
We supplement our data with archival DECam imaging data within the
footprint of the SHELA field in the ugriz bands. We also include
archival data in the Y band, which was not observed by our proprietary
program. All such archival data available through the NOIRLab Astro
Data Archive released prior to 2021 March 3 were included for this
catalog.
We incorporate multiwavelength imaging data from surveys overlapping
with the SHELA field. This includes NEWFIRM Ks-band images from the
NEWFIRM HETDEX Survey (NHS; Stevans+ 2021ApJ...921...58S 2021ApJ...921...58S) and
mid-infrared mosaics in 3.6 and 4.5um with Spitzer/IRAC presented in
Papovich+ (2016ApJS..224...28P 2016ApJS..224...28P). We also make use of publicly
available data from PDR3 of HSC-SSP (Aihara+ 2022PASJ...74..247A 2022PASJ...74..247A)
within the SHELA field. Finally, we include J and (shallower) Ks
images from the VICS82 survey (Geach+ 2017, J/ApJS/231/7) obtained
with VISTA and CFHT.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 674 260480 SHELA catalog
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See also:
VII/285 : Gaia DR2 quasar and galaxy classification (Bailer-Jones+, 2019)
VII/292 : DESI Legacy Imaging Surveys DR8 (Duncan, 2022)
J/ApJS/162/1 : MUSYC: optical source catalog (Gawiser+, 2006)
J/ApJS/231/7 : The VISTA-CFHT Stripe 82 NIR survey (VICS82) (Geach+, 2017)
J/ApJS/240/5 : SHELA. II. DECam & IRAC multiwavelength catalog (Wold+, 2019)
J/ApJS/258/11 : The COSMOS2020 catalog (Weaver+, 2022)
http://irsa.ipac.caltech.edu/data/SPITZER/SHELA/ : SHELA data access on IRSA
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- ID [100100001/105701349] Unique ID number
11- 19 F9.6 deg RAdeg [15/16] Right Ascension (J2000)
21- 29 F9.6 deg DEdeg [-1.1/1.1] Declination (J2000)
31- 50 A20 --- Model Best-fit light profile model (1)
52- 62 F11.3 uJy Fu-D [-348127/720554]?=-99 Measured flux,
CTIO/DECam u-band
64- 74 F11.3 uJy e_Fu-D [0.03/1.5e+6]?=-99 Uncertainty on Fu-D
76- 84 F9.3 --- chi2u-D [-5/54047]?=-99 Profile fit χ2, DECam
u-band
86- 94 F9.3 uJy Fg-D [-3102/83391]?=-99 Measured flux,
CTIO/DECam g-band
96- 105 F10.3 uJy e_Fg-D [0.03/120745]?=-99 Uncertainty on Fg-D
107- 116 F10.3 --- chi2g-D [-4/652958]?=-99 Profile fit χ2, DECam
g-band
118- 127 F10.3 uJy Fr-D [-63257/30355]?=-99 Measured flux,
CTIO/DECam r-band
129- 137 F9.3 uJy e_Fr-D [0.04/82955]?=-99 Uncertainty on Fr-D
139- 148 F10.3 --- chi2r-D [-7/141568]?=-99 Profile fit χ2, DECam
r-band
150- 160 F11.3 uJy Fi-D [-161883/35833]?=-99 Measured flux,
CTIO/DECam i-band
162- 171 F10.3 uJy e_Fi-D [0.06/120521]?=-99 Uncertainty on Fi-D
173- 182 F10.3 --- chi2i-D [-6/123954]?=-99 Profile fit χ2, DECam
i-band
184- 193 F10.3 uJy Fz-D [-61075/88109]?=-99 Measured flux,
CTIO/DECam z-band
195- 204 F10.3 uJy e_Fz-D [0.1/134377]?=-99 Uncertainty on Fz-D
206- 214 F9.3 --- chi2z-D [-10/73104]?=-99 Profile fit χ2, DECam
z-band
216- 227 F12.3 uJy Fy-D [-1.5e+6/162122]?=-99 Measured flux,
CTIO/DECam y-band
229- 239 F11.3 uJy e_Fy-D [0.4/1.6e+6]?=-99 Uncertainty on Fy-D
241- 250 F10.3 --- chi2y-D [-6/147791]?=-99 Profile fit χ2, DECam
y-band
252- 262 F11.3 uJy Fg-HSC [-238628/468476]?=-99 Measured flux,
Subaru/Hyper Suprime-Cam g-band
264- 274 F11.3 uJy e_Fg-HSC [0.01/1.3e+6]?=-99 Uncertainty on Fg-HSC
276- 283 F8.3 --- chi2g-HSC [-5/1459]?=-99 Profile fit χ2, Hyper
Suprime-Cam g-band
285- 295 F11.3 uJy Fr-HSC [-909448/555795]?=-99 Measured flux,
Subaru/Hyper Suprime-Cam r-band
297- 307 F11.3 uJy e_Fr-HSC [0.02/1.6e+6]?=-99 Uncertainty on Fr-HSC
309- 316 F8.3 --- chi2r-HSC [-9/2121]?=-99 Profile fit χ2, Hyper
Suprime-Cam r-band
318- 328 F11.3 uJy Fi-HSC [-965587/686396]?=-99 Measured flux,
Subaru/Hyper Suprime-Cam i-band
330- 340 F11.3 uJy e_Fi-HSC [0.03/1.2e+6]?=-99 Uncertainty on Fi-HSC
342- 349 F8.3 --- chi2i-HSC [-5/1549]?=-99 Profile fit χ2, Hyper
Suprime-Cam i-band
351- 361 F11.3 uJy Fz-HSC [-142201/851984]?=-99 Measured flux,
Subaru/Hyper Suprime-Cam z-band
363- 373 F11.3 uJy e_Fz-HSC [0.06/1.2e+6]?=-99 Uncertainty on Fz-HSC
375- 382 F8.3 --- chi2z-HSC [-5/2084]?=-99 Profile fit χ2, Hyper
Suprime-Cam z-band
384- 395 F12.3 uJy Fy-HSC [-2e+6/896289]?=-99 Measured flux,
Subaru/Hyper Suprime-Cam y-band
397- 407 F11.3 uJy e_Fy-HSC [0.1/1.1e+6]?=-99 Uncertainty on Fy-HSC
409- 415 F7.3 --- chi2y-HSC [-4/761]?=-99 Profile fit χ2, Hyper
Suprime-Cam y-band
417- 427 F11.3 uJy FK-NHS [-922829/255795]?=-99 Measured flux,
NOAO/NEWFIRM Ks-band
429- 439 F11.3 uJy e_FK-NHS [0.3/2e+6]?=-99 Uncertainty on FK-NHS
441- 450 F10.3 --- chi2K-NHS [-4/607505]?=-99 Profile fit χ2,
NEWFIRM Ks-band
452- 456 F5.1 uJy FJ-CFHT ?=-99 Measured flux, CFHT/WIRCAM J-band
(always NULL)
458- 462 F5.1 uJy e_FJ-CFHT ?=-99 Uncertainty on flux-J-CFHT
(always NULL)
464- 468 F5.1 --- chi2J-CFHT ?=-99 Profile fit χ2, CFHT J-band
(always NULL)
470- 474 F5.1 uJy FK-CFHT ?=-99 Measured flux, CFHT/WIRCAM Ks-band
(always NULL)
476- 480 F5.1 uJy e_FK-CFHT ?=-99 Uncertainty on flux-K-CFHT
(always NULL)
482- 486 F5.1 --- chi2K-CFHT ?=-99 Profile fit χ2, CFHT Ks-band
(always NULL)
488- 498 F11.3 uJy FJ-VISTA [-916277/960663]?=-99 Measured flux, VISTA
J-band
500- 510 F11.3 uJy e_FJ-VISTA [0.3/1.5e+6]?=-99 Uncertainty on FJ-VISTA
512- 520 F9.3 --- chi2J-VISTA [-5/30564]?=-99 Profile fit χ2,
VISTA J-band
522- 533 F12.3 uJy FK-VISTA [-2e+6/829207]?=-99 Measured flux, VISTA
Ks-band
535- 545 F11.3 uJy e_FK-VISTA [0.5/1.5e+6]?=-99 Uncertainty on FK-VISTA
547- 554 F8.3 --- chi2K-VISTA [-2/3456]?=-99 Profile fit χ2, VISTA
Ks-band
556- 565 F10.3 uJy Fch1 [-16564/27849]?=-99 Measured flux,
Spitzer/IRAC 3.6µm band
567- 574 F8.3 uJy e_Fch1 [0.7/1458]?=-99 Uncertainty on flux-ch1
576- 585 F10.3 --- chi2ch1 [-2/297030]?=-99 Profile fit χ2,
IRAC 3.6µm band
587- 595 F9.3 uJy Fch2 [-7726/26451]?=-99 Measured flux,
Spitzer/IRAC 4.5µm band
597- 604 F8.3 uJy e_Fch2 [0.7/1330]?=-99 Uncertainty on flux-ch2
606- 614 F9.3 --- chi2ch2 [-5/86874]?=-99 Profile fit χ2, IRAC
4.5µm band
616- 621 F6.2 --- zphot [0.01/15]?=-99 EAZY minimum χ2
photometric redshift
623- 629 F7.3 --- zphot-l68 [0.01/11]?=-99 EAZY lower 68th-percentile
of photometric redshift
631- 637 F7.3 --- zphot-u68 [0.02/15]?=-99 EAZY upper 68th-percentile
of photometric redshift
639- 645 F7.3 --- zphot-l95 [0.01/11]?=-99 EAZY lower 95th-percentile
of photometric redshift
647- 653 F7.3 --- zphot-u95 [0.01/15]?=-99 EAZY upper 95th-percentile
of photometric redshift
655- 659 F5.1 --- Nfilt [5/16]?=-99 Number of filters used in EAZY
fit
661- 674 F14.9 --- chi2 [6.7e-6/1115]?=-99 EAZY minimum χ2
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Note (1): Model as follows:
PointSource = unresolved sources; 138654 occurrences
ExpGalaxy = exponential light profiles; 48826 occurrences
SimpleGalaxy = barely resolved sources; 42125 occurrences
DevGalaxy = de Vaucouleurs light profiles; 26221 occurrences
FixedCompositeGalaxy = concentric superposition of the ExpGalaxy and
DevGalaxy models; 4654 occurrences
See Section 4.1.3.
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History:
From electronic version of the journal
References:
Papovich et al. Paper I. 2016ApJS..224...28P 2016ApJS..224...28P
Wold et al. Paper II. 2019ApJS..240....5W 2019ApJS..240....5W Cat. J/ApJS/240/5
Leung et al. Paper IV. 2023ApJS..269...46L 2023ApJS..269...46L This catalog
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 02-Feb-2024