VII/299 HELP DR1 photometry of extragalactic field sources (Shirley+, 2021)
HELP the Herschel Extragalactic Legacy Project.
Shirley R., Duncan K., Campos-Varillas M.C., Hurley P.D., Malek K.,
Roehlly Y., Smith M.W.L., Aussel H., Bakx T., Buat V., Burgarella D.,
Christopher N., Duivenvoorden S., Eales S., Efstathiou A.,
Gonzalez Solares E.A., Griffin M., Jarvis M., Faro B.L., Marchetti L.,
McCheyne I., Papadopoulos A., Penner K., Pons E., Prescott M., Rigby E.,
Rottgering H., Saxena A., Scudder J., Vaccari M., Wang L. and Oliver S.J.
<Mon. Not. R. Astron. Soc. 507, 129-155 (2021)>
=2021MNRAS.507..129S 2021MNRAS.507..129S (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Galaxies ; Combined data ; Photometry ; Spectroscopy ;
Cross identifications ; Redshifts ; Positional data ; Optical ;
Infrared ; Radio sources ; Millimetric/submm sources ;
Star Forming Region ; Stars, masses ; Magnitudes, absolute
Keywords: techniques: photometric - Astronomical databases: catalogues -
surveys - galaxies: evolution - infrared: galaxies -
submillimetre: galaxies
Abstract:
We present the Herschel Extragalactic Legacy Project (HELP). This
project collates, curates, homogenizes, and creates derived data
products for most of the premium multiwavelength extragalactic data
sets. The sky boundaries for the first data release cover 1270 deg2
defined by the Herschel SPIRE extragalactic survey fields; notably the
Herschel Multi-tiered Extragalactic Survey (HerMES) and the Herschel
Atlas survey (H-ATLAS). Here, we describe the motivation and principal
elements in the design of the project. Guiding principles are
transparent or 'open' methodologies with care for reproducibility and
identification of provenance. A key element of the design focuses
around the homogenization of calibration, meta data, and the provision
of information required to define the selection of the data for
statistical analysis. We apply probabilistic methods that extract
information directly from the images at long wavelengths, exploiting
the prior information available at shorter wavelengths and providing
full posterior distributions rather than maximum-likelihood estimates
and associated uncertainties as in traditional catalogues. With this
project definition paper, we provide full access to the first data
release of HELP; Data Release 1 (DR1), including a monolithic map of
the largest SPIRE extragalactic field at 385 deg2 and 18 million
measurements of PACS and SPIRE fluxes. We also provide tools to access
and analyse the full HELP data base. This new data set includes
far-infrared photometry, photometric redshifts, and derived physical
properties estimated from modelling the spectral energy distributions
over the full HELP sky. All the software and data presented is
publicly available.
Description:
The Herschel Extragalactic Legacy Project (HELP) brings together key
multiwavelength surveys. It homogenizes them; exploits prior
information from the optical, NIR, and mid-infrared surveys to deblend
the low-resolution long wavelength maps; provides well-calibrated
photometric redshifts ; and conducts energy-balanced spectral energy
distribution (SED) modelling to provide physical parameter
estimations.The first stage in this process is to compile all the
ancillary data that is available across the HELP fields into a
'masterlist' of objects. The principal aim is to produce a
catalogue with consistent photometry from the best photometric
catalogues that are available. The masterlist presented here is the
basis for the first public HELP data release (HELP DR1) and defines
the HELP identifiers and positions that will be used in subsequent
data products for DR1. Nowadays, we present the updated dm32 all-sky
catalog product fully described here
(https://github.com/H-E-L-P/dmu_products/tree/master/dmu32/
dmu32_AllSky and https://hedam.lam.fr/HELP/dataproducts/dmu32/
dmu32_AllSky/).
This allSky dm32 catalogue comprises 23 fields : AKARI-NEP and SEP,
Bootes, CDFS-SWIRE, COSMOS, EGS,ELAIS-N1, N2 and S1, GAMA-09, 12 and
15, HDF-N, Herschel-Stripe-82, Lockman-SWIRE, NGP, SA13, SGP,
SPIRE-NEP, SSDF, xFLS, XMM-13hr all presented with their own source
detections in section 2 and 3. The data includes stellarity values and
quality control flags as detailed in section 4. Also we provide
Photometric/Specroscopic estimates and collected redshifts, all flux
densities and uncertainties in respectives field photometric bands.
Finally, we computed SFR, M*, Ldust with CIGALE SED fitting code from
all merged sources observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
help.sam 1443 1000 Herschel Extragalactic Legacy Project HELP
photometric catalogue of extragalactic field
sources
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See also:
J/MNRAS/456/1359 : IAC Stripe 82 Legacy Project: Photometry (Fliri+, 2016)
J/MNRAS/416/927 : Wide-field optical imaging of 4 fields
(Gonzalez-Solares+, 2011)
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/MNRAS/386/1605 : Luminous K-band selected QSOs from UKIDSS (Maddox+, 2008)
J/A+A/622/A103 : Python Code Investigating GALaxy Emission (Boquien+, 2019)
J/A+A/590/A102 : VIPERS Multi-Lambda Survey (Moutard+, 2016)
J/A+A/570/A11 : The Hawk-I UDS and GOODS Survey (HUGS) (Fontana+, 2014)
J/A+A/566/A60 : Optical-NIR catalog of AKARI NEP Deep Field (Oi+, 2014)
J/A+A/556/A55 : Multi-color photometry of star-forming galaxies
(Ilbert+, 2013)
J/ApJ/701/428 : The Spitzer Deep, Wide-Field Survey (SDWFS) (Ashby+, 2009)
J/ApJ/682/985 : FIREWORKS photometry of GOODS CDF-S (Wuyts+, 2008)
J/ApJS/235/36 : SPLASH-SXDF multi-wavelength photometric catalog
(Mehta+, 2018)
J/ApJS/231/7 : The VISTA-CFHT Stripe 82 NIR survey (VICS82) (Geach+, 2017)
J/ApJS/225/1 : SpIES: the Spitzer IRAC Equatorial Survey (Timlin+, 2016)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJS/223/1 : Multiwavelength catalog in the SEP field (Baronchelli+,2016)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/ApJS/210/22 : Herschel Stripe 82 survey (HerS) first catalog (Viero+,2014)
J/ApJS/209/22 : SSDF survey: IRAC catalogs (Ashby+, 2013)
J/ApJS/208/24 : Spitzer MIR AGN survey. I. (Lacy+, 2013)
J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)
J/ApJS/187/251 : Ultradeep Ks imaging in the GOODS-N (Wang+, 2010)
J/ApJS/176/1 : Subaru/XMM-Newton deep survey (SXDS). II. (Furusawa+, 2008)
J/AJ/153/107 : Australian Dark Energy Survey (OzDES) quasar catalog
(Tie+, 2017)
J/AJ/128/1 : First Look Survey: NOAO R-band Mosaic (Fadda+, 2004)
VII/233 : 2MASS All-Sky Extended Source Catalog (XSC)
(IPAC-UMass, 2006)
III/334 : VISTA Deep Extragalactic Observations (VIDEO) (Jarvis+,2013)
II/377 : Spitzer Data Fusion main catalogue (Vaccari, 2023)
II/359 : The VISTA Hemisphere Survey (VHS) catalog DR4.1
(McMahon+, 2013)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
II/350 : VLT Survey Telescope ATLAS (Shanks+, 2015)
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+,2016)
II/329 : VIKING catalogue data release 1 (Edge+, 2013)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/301 : The DEEP2-DR1 Photometric Catalog (Coil+ 2004)
II/261 : GOODS initial results (Giavalisco+, 2004)
II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2008)
Byte-by-byte Description of file: help.sam
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 28 A28 --- HELP HELP identifier based on J2000 position
as HELP_JHHMMSS.sss+DDMMSS.sss (help_id)
30- 45 F16.12 deg RAJ2000 Right Ascension (J2000) (ra)
47- 62 F16.12 deg DEJ2000 Declination (J2000) (dec)
64- 81 A18 --- Field Name of the field in HELP survey as
detailed in appendix A in our study
(field)
83- 91 I9 --- HEALPIX HEALPix index of the source position at
order 13 using the nested scheme (hp_idx)
93- 103 F11.9 mag E(B-V) Galactic extinction (Schlegel et al.
1998ApJ...500..525S 1998ApJ...500..525S) at the object
position (ebv)
105- 115 F11.9 --- zphEAZY ? Photometric redshift obtained with EAZY
(redshift)
117- 131 E15.9 --- zsp ? Spectroscopic redshift collated from
the literature (zspec)
133 I1 --- q_zsp [0/5]? Spectroscopic redshift quality
flag FIXME code meaning (zspec_qual)
135 I1 --- f_zsp [0/1] Boolean flag set to true when the
association of a source to its redshift
may be problematic possible
mis-cross-association
(zspecassociationflag)
137- 147 F11.9 --- stellar ? Index evaluation is the source is
point-source as 0 not point source to 1
point source and generally name
stellarity index (stellarity)
149- 168 A20 --- r_stellar ? Name of Survey from which stellarity is
calculated (stellarity_origin)
170- 187 F18.9 uJy Fu ? Total flux density in the lowest error
u band measurement (fbestu)
189- 203 F15.9 uJy e_Fu ? Uncertainty on fbestu (ferrbestu)
205- 216 F12.9 mag umag ? Total AB magnitude of the lowest error
u band measurement (mbestu)
218- 232 E15.9 mag e_umag ? Uncertainty on mbestu (merrbestu)
234 I1 --- f_Fu [0] Flag set to true for sources for
spurious measurements in u (flagbestu)
236- 251 E16.9 uJy Fg ? Total flux density in the lowest error
g band measurement (fbestg)
253- 268 E16.9 uJy e_Fg ? Uncertainty on fbestg (ferrbestg)
270- 281 F12.9 mag gmag ? Total AB magnitude of the lowest error
g band measurement (mbestg)
283- 297 E15.9 mag e_gmag []? Uncertainty on mbestg (merrbestg)
299 I1 --- f_Fg [0/1] Flag set to true for sources for
spurious measurements in g (flagbestg)
301- 316 E16.9 uJy Fr ? Total flux density in the lowest error
r band measurement (fbestr)
318- 332 E15.9 uJy e_Fr ? Uncertainty on fbestr (ferrbestr)
334- 345 F12.9 mag rmag ? Total AB magnitude of the lowest error
g band measurement (mbestr)
347- 361 E15.9 mag e_rmag []? Uncertainty on mbestr (merrbestr)
363 I1 --- f_Fr [0/1] Flag set to true for sources for
spurious measurements in r (flagbestr)
365- 380 E16.9 uJy Fi ? Total flux density in the lowest error
i band measurement (fbesti)
382- 397 E16.9 uJy e_Fi ? Uncertainty on fbesti (ferrbesti)
399- 411 F13.9 mag imag ? Total AB magnitude of the lowest error
i band measurement (mbesti)
413- 427 E15.9 mag e_imag ? Uncertainty on mbesti (merrbesti)
429 I1 --- f_Fi [0/1] Flag set to true for sources for
spurious measurements in i (flagbesti)
431- 446 E16.9 uJy Fz ? Total flux density in the lowest error
z band measurement (fbestz)
448- 463 E16.9 uJy e_Fz ? Uncertainty on fbestz (ferrbestz)
465- 476 F12.9 mag zmag ? Total AB magnitude of the lowest error
z band measurement (mbestz)
478- 492 E15.9 mag e_zmag []? Uncertainty on mbestz (merrbestz)
494 I1 --- f_Fz [0/1] Flag set to true for sources for
spurious measurements in z (flagbestz)
496- 511 E16.9 uJy Fy ? Total flux density in the lowest error
y band measurement (fbesty)
513- 526 E14.9 uJy e_Fy ? Uncertainty on fbesty (ferrbesty)
528- 539 F12.9 mag ymag ? Total AB magnitude of the lowest error
y band measurement (mbesty)
541- 555 E15.9 mag e_ymag ? Uncertainty on mbesty (merrbesty)
557 I1 --- f_Fy [0/1]? Flag set to true for sources for
spurious measurements in y (flagbesty)
559- 573 E15.9 uJy Fj ? Total flux density in the lowest error
j band measurement (fbestj)
575- 589 E15.9 uJy e_Fj ? Uncertainty on fbestj (ferrbestj)
591- 602 F12.9 mag jmag ? Total AB magnitude of the lowest error
j band measurement (mbestj)
604- 618 E15.9 mag e_jmag ? Uncertainty on mbestj (merrbestj)
620 I1 --- f_Fj [0/1]? Flag set to true for sources for
spurious measurements in j (flagbestj)
622- 636 E15.9 uJy Fh ? Total flux density in the lowest error
h band measurement (fbesth)
638- 651 E14.9 uJy e_Fh ? Uncertainty on fbesth (ferrbesth)
653- 664 F12.9 mag hmag ? Total AB magnitude of the lowest error
h band measurement (mbesth)
666- 680 E15.9 mag e_hmag ? Uncertainty on mbesth (merrbesth)
682 I1 --- f_Fh [0] Flag set to true for sources for
spurious measurements in h (flagbesth)
684- 699 E16.9 uJy Fk ? Total flux density in the lowest error
k band measurement (fbestk)
701- 715 E15.9 uJy e_Fk ? Uncertainty on fbestk (ferrbestk)
717- 729 F13.9 mag kmag ? Total AB magnitude of the lowest error
k band measurement (mbestk)
731- 745 E15.9 mag e_kmag ? Uncertainty on mbestk (merrbestk)
747 I1 --- f_Fk [0/1]? Flag set to true for sources for
spurious measurements in k (flagbestk)
749- 763 E15.9 uJy Fks ? Total flux density in the lowest error
ks band measurement (fbestks)
765- 779 E15.9 uJy e_Fks ? Uncertainty on fbestks (ferrbestks)
781- 792 F12.9 mag ksmag ? Total AB magnitude of the lowest error
ks band measurement (mbestks)
794- 808 E15.9 mag e_ksmag ? Uncertainty on mbestks (merrbestks)
810 I1 --- f_Fks [0] Flag set to true for sources for
spurious measurements in ks (flagbestks)
812- 826 E15.9 uJy Fi1 ? Total flux density in the 3.6um band of
The Infrared Array Camera IRAC on The
Spitzer Space Telescope (firaci1)
828- 841 E14.9 uJy e_Fi1 ? Uncertainty on firaci1 (ferriraci1)
843- 854 F12.9 mag i1mag ? Total AB magnitude in the i1 band
3.6µm of the Infrared Array Camera
IRAC on the Spitzer Space Telescope
(miraci1)
856- 870 E15.9 mag e_i1mag ? Uncertainty on miraci1 (merriraci1)
872 I1 --- f_Fi1 [0/1]? Flag set to true for sources for
which niether the irac_i1 aperture nor
total flux should be used for SED fitting
(flagiraci1)
874- 888 E15.9 uJy Fi2 ? Total flux density in the 4.5um band of
The Infrared Array Camera (IRAC) on The
Spitzer Space Telescope (firaci2)
890- 903 E14.9 uJy e_Fi2 ? Uncertainty on firaci2 (ferriraci2)
905- 916 F12.9 mag i2mag ? Total AB magnitude in i2 band 4.5µm
of The Infrared Array Camera IRAC on The
Spitzer Space Telescope (miraci2)
918- 932 E15.9 mag e_i2mag ? Uncertainty on miraci2 (merriraci2)
934 I1 --- f_Fi2 [0]? Flag set to true for sources for
which niether the irac_i2 aperture nor
total flux should be used for SED fitting
(flagiraci2)
936- 950 E15.9 uJy Fi3 ? Total flux density in the 5.6um band of
The Infrared Array Camera (IRAC) on The
Spitzer Space Telescope (firaci3)
952- 966 E15.9 uJy e_Fi3 ? Uncertainty on firaci3 (ferriraci3)
968- 979 F12.9 mag i3mag ? Total AB magnitude in the 5.6 µm
band of The Infrared Array Camera IRAC on
The Spitzer Space Telescope (miraci3)
981- 995 E15.9 mag e_i3mag ? Uncertainty on miraci3 (merriraci3)
997 I1 --- f_Fi3 [0]? Flag set to true for sources for
which niether the irac_i3 aperture nor
total flux should be used for SED fitting
(flagiraci3)
999- 1013 E15.9 uJy Fi4 ? Total flux density in the 8.0um band of
The Infrared Array Camera (IRAC) on The
Spitzer Space Telescope (firaci4)
1015- 1029 E15.9 uJy e_Fi4 ? Uncertainty on firaci4 (ferriraci4)
1031- 1042 F12.9 mag i4mag ? Total AB magnitude in the 8.0 um band
of The Infrared Array Camera (IRAC) on
The Spitzer Space Telescope (miraci4)
1044- 1058 E15.9 mag e_i4mag ? Uncertainty on miraci4 (merriraci4)
1060 I1 --- f_Fi4 [0]? Flag set to true for sources for
which niether the irac_i4 aperture nor
total flux should be used for SED fitting
(flagiraci4)
1062- 1076 E15.9 uJy Fm24 ? Total flux density in the 15-30um band
of The Multiband Imaging Photometer MIPS
on The Spitzer Space Telescope (fmips24)
1078- 1091 E14.9 uJy e_Fm24 ? Uncertainty on fmips24 (ferrmips24)
1093 I1 --- f_Fm24 [0/1]? Flag set to true for sources for
which niether the mips_24 aperture nor
total flux should be used for SED fitting
(flagmips24)
1095- 1107 E13.9 uJy Fpacsg ? Total flux density in the 100um green
band of Photoconductor Array Camera and
Spectrometer PACS on The Herschel Space
Telescope (fpacsgreen)
1109- 1121 E13.9 uJy e_Fpacsg ? Uncertainty on fpacsgreen
(ferrpacsgreen)
1123 I1 --- f_Fpacsg [0/1]? Flag set to true for sources for
which niether the pacs_green aperture nor
total flux should be used for SED fitting
(see documentation) (flagpacsgreen)
1125- 1137 E13.9 uJy Fpacsr ? Total flux density in the 160um red
band of Photoconductor Array Camera and
Spectrometer PACS on The Herschel Space
Telescope (fpacsred)
1139- 1151 E13.9 uJy e_Fpacsr ? Uncertainty on fpacsred
(ferrpacsred)
1153 I1 --- f_Fpacsr [0/1]? Flag set to true for sources for
which niether the pacs_red aperture nor
total flux should be used for SED fitting
(flagpacsred)
1155- 1169 E15.9 uJy F250sp ? Total flux density in the 750-1500GHz
band of The Spectral and Photometric
Imaging Reciever SPIRE on The Herschel
Space Telescope (fspire250)
1171- 1184 E14.9 uJy e_F250sp ? Uncertainty on fspire250
(ferrspire250)
1186 I1 --- f_F250sp [0/1]? Flag set to true for sources for
which niether the spire_250 aperture nor
total flux should be used for SED fitting
(flagspire250)
1188- 1202 E15.9 uJy F350sp ? Total flux density in the 750-1500GHz
band of The Spectral and Photometric
Imaging Reciever (SPIRE) on The Herschel
Space Telescope (fspire350)
1204- 1217 E14.9 uJy e_F350sp ? Uncertainty on fspire350
(ferrspire350)
1219 I1 --- f_F350sp [0/1]? Flag set to true for sources for
which niether the spire_350 aperture nor
total flux should be used for SED fitting
(flagspire350)
1221- 1235 E15.9 uJy F500sp ? Total flux density in the 400-750GHz
band of The Spectral and Photometric
Imaging Reciever SPIRE on The Herschel
Space Telescope (fspire500)
1237- 1250 E14.9 uJy e_F500sp ? Uncertainty on fspire500
(ferrspire500)
1252 I1 --- f_F500sp [0/1]? Flag set to true for sources for
which niether the spire_500 aperture nor
total flux should be used for SED fitting
(see documentation) (flagspire500)
1254- 1267 E14.9 Msun SFR ? Star Formation Rate estimated by SED
fitting with CIGALE (cigale_sfr)
1269- 1282 E14.9 Msun e_SFR ? Uncertainty on CIGALE_SFR
(cigalesfrerr)
1284- 1297 E14.9 Msun M* ? Stellar Mass estimated by SED fitting
with CIGALE (cigale_mstar)
1299- 1312 E14.9 Msun e_M* ? Uncertainty on CIGALE_Mstar
(cigalemstarerr)
1314- 1327 E14.9 W Ldust ? Dust luminosity estimated by SED
fitting with CIGALE using both optical
and infra-red information
(cigale_dustlumin)
1329- 1342 E14.9 W e_Ldust ? Uncertainty on CIGALE_DustLumin
(cigaledustluminerr)
1344- 1357 E14.9 W LdustIR ? Dust luminosity estimated by SED
fitting with CIGALE using only the
infra-red information
(cigaledustluminironly)
1359- 1372 E14.9 W e_LdustIR ? Uncertainty on CIGALEDustLuminIRonly
(cigaledustluminironly_err)
1374- 1387 E14.9 --- Chi2Opt ? Reduced optical chi squared of best
CIGALE fit to all data (cigalechi2opt)
1389- 1402 E14.9 --- Chi2IRbest ? Reduced infrared chi squared of best
CIGALE fit to all data (cigalechi2ir)
1404- 1417 E14.9 --- Chi2best ? Reduced chi squared of best CIGALE fit
(cigalechi2red)
1419- 1433 E15.9 --- Chi2IR ? Reduced chi squared of best CIGALE fit
to infrared data (cigalechi2ironly)
1435 I1 --- fGaia [0/3]? Flag indicating the increasing
probability of the source being a Gaia
object (flag_gaia)
1437 I1 --- fClean [0/1]? Boolean flag denoting that the
source was associated to really near
object that were removed during the
cleaning procedure (flag_cleaned)
1439 I1 --- fMerg [0/1]? Boolean flag denoting a possible
mis-association during the cross-matching
of the various catalogues (flag_merged)
1441 I1 --- fOptNIRo [0/7]? Flag indicating in which
wavelength regimes the source was
observed (flagoptnirobs)
1443 I1 --- fOptNIRd [0/7]? Flag indicating in which
wavelength regimes the source was
detected (flagoptnirdet)
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Acknowledgements:
Shirley R., rshirley(at)mpe.mpg.de
History:
From electronic version of the journal
License: CC-BY-4.0
(End) Luc Trabelsi [CDS] 22-Apr-2026