J/ApJS/236/30 Herschel-ATLAS (H-ATLAS) DR2 (Maddox+, 2018)
The Herschel-ATLAS Data Release 2.
II. Catalogs of far-infrared and submillimeter sources in the fields at
the south and north Galactic poles.
Maddox S.J., Valiante E., Cigan P., Dunne L., Eales S., Smith M.W.L.,
Dye S., Furlanetto C., Ibar E., de Zotti G., Millard J.S., Bourne N.,
Gomez H.L., Ivison R.J., Scott D., Valtchanov I.
<Astrophys. J. Suppl. Ser., 236, 30 (2018)>
=2018ApJS..236...30M 2018ApJS..236...30M
ADC_Keywords: Surveys ; Galaxy catalogs ; Photometry, millimetric/submm ;
Redshifts ; Photometry, SDSS ; Photometry, infrared
Keywords: catalogs ; cosmology: observations ; galaxies: statistics ;
methods: data analysis ; submillimeter: galaxies ; surveys
Abstract:
The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) is a
survey of 660deg2 with the PACS and SPIRE cameras in five
photometric bands: 100, 160, 250, 350, and 500µm. This is the
second of three papers describing the data release for the large
fields at the south and north Galactic poles (NGP and SGP). In this
paper we describe the catalogs of far-infrared and submillimeter
sources for the NGP and SGP, which cover 177.1deg2 and 303.4deg2,
respectively. The catalogs contain 118980 sources for the NGP field
and 193527 sources for the SGP field detected at more than 4σ
significance in any of the 250, 350, or 500µm bands. The source
detection is based on the 250µm map, and we present photometry in
all five bands for each source, including aperture photometry for
sources known to be extended. The rms positional accuracy for the
faintest sources is about 2.4" in both RA and DEC. We present a
statistical analysis of the catalogs and discuss the practical
issues-completeness, reliability, flux boosting, accuracy of
positions, accuracy of flux measurements-necessary to use the catalogs
for astronomical projects.
Description:
A detailed description of the processing necessary to produce maps
from the Herschel raw data is presented in Paper I
(Smith+ 2017ApJS..233...26S 2017ApJS..233...26S).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
hatlas2ngp.dat 606 118980 *Herschel-ATLAS Data Release 2 in the North
Galactic Pole (NGP)
hatlas2sgp.dat 279 193527 Herschel-ATLAS Data Release 2 in the South
Galactic Pole (SGP)
table2.dat 75 75 Comparison of H-ATLAS with Planck flux densities
(Jy, rounded to 1mJy) at 350 and 500um
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Note on hatlas2ngp.dat: IDs are sought via a Likelihood-Ratio analysis of
optical candidates within 10" of all SPIRE sources with S/N≥4 at
250um (defined as F250/E250 in the matched-filter catalogues). The
data release main catalogue (hatlas2ngp.dat) contains only the "best"
candidate ID to each SPIRE source (where available).
Note on table2.dat: We have adopted the Planck APERFLUX photometry as
recommended by Planck Collaboration XXVI (2016, J/A+A/594/A26) for
these wavelengths. Planck 545GHz (550um) flux densities, and their
errors, have been scaled up by a factor of 1.35 to convert them to 500um.
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Description of file:
In the FTP section, the original files of the main catalogues:
HATLASNGPCATDR2V1.4.FITS and HATLASSGPCATDR2V1.4.FITS are also
available in FITS format.
See also:
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+, 2012)
II/350 : VLT Survey Telescope ATLAS (Shanks+, 2015)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam, 2015)
J/MNRAS/411/505 : Sub-mm observations in Extended Chandra DFS (Chapin+, 2011)
J/MNRAS/415/2336 : Herschel-ATLAS Science Demonstration Catalog (Rigby+, 2011)
J/ApJ/749/65 : H-ATLAS strongly lensed galaxies (Gonzalez-Nuevo+, 2012)
J/A+A/576/A33 : KINGFISH galaxy sample radial profile SED (Hunt+, 2015)
J/MNRAS/462/3146 : Herschel-ATLAS DR1 (HATLAS) (Valiante+, 2016)
J/A+A/594/A26 : 2nd Planck Cat. of Compact Sources (PCCS2) (Planck+, 2016)
J/ApJS/244/30 : Spitzer cat. of Herschel star-forming galaxies (Ma+, 2019)
http://www.sdss.org/ : SDSS home page
http://www.h-atlas.org/ : Herschel ATLAS home page
Byte-by-byte Description of file: hatlas2ngp.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- --- [HATLAS]
7- 22 A16 --- HATLAS HATLAS designation (JHHMMSS.s+DDMMSS);
<H-ATLAS JHHMMSS.s+DDMMSS> in Simbad
(HATLASIAUID)
24- 37 A14 --- ID HATLAS short name (IDNAME)
39- 48 F10.6 deg RAdeg [190.3/208] Right ascension (J2000) (RA)
50- 58 F9.6 deg DEdeg [22/36] Declination (J2000) (DEC)
60- 67 F8.6 Jy F250 [0.004/6.2] Herschel/SPIRE 250um flux from MF
69- 77 F9.6 Jy F350 [-0.009/2.3] Herschel/SPIRE 350um flux from MF
79- 87 F9.6 Jy F500 [-0.04/1] Herschel/SPIRE 500um flux from MF
89- 96 F8.6 Jy e_F250 [0.004/0.03] 1σ error on F250 assuming
confusion noise variable with flux (E250)
98-105 F8.6 Jy e_F350 [0.007/0.03] 1σ error on F350 assuming
confusion noise variable with flux (E350)
107-114 F8.6 Jy e_F500 [0.007/0.03] 1σ error on F500 assuming
confusion noise variable with flux (E500)
116-124 F9.6 Jy F250b [0.004/24.4] 250um best flux (F250BEST)
126-133 F8.6 Jy e_F250b [0.004/5] 1σ error on F250b (E250BEST)
135-143 F9.4 arcsec a_F250b [20.5/350]?=-99 250um aperture radius
145-153 F9.6 Jy F350b [-0.009/12.2] 350um best flux (F350BEST)
155-162 F8.6 Jy e_F350b [0.007/3] 1σ error on F350b (E350BEST)
164-172 F9.4 arcsec a_F350b [26/350]?=-99 350um aperture radius
174-182 F9.6 Jy F500b [-0.04/5.3] 500um best flux (F500BEST)
184-191 F8.6 Jy e_F500b [0.007/1.2] 1σ error on F500b (E500BEST)
193-201 F9.4 arcsec a_F500b [28/350]?=-99 500um aperture radius
203-211 F9.6 Jy F100b [-0.3/27]?=-1 Herschel/PACS 100um best flux from
aperture photometry (F100BEST)
213-221 F9.6 Jy e_F100b [0.03/1.5]?=-1 1σ error
on F100b (E100BEST)
223-230 F8.4 arcsec a_F100b [11.4/350] 100um aperture radius
232-240 F9.6 Jy F160b [-0.3/36]?=-1 Herschel/PACS 160um best flux from
aperture photometry (F160BEST)
242-250 F9.6 Jy e_F160b [0.04/1.2]?=-1 1σ error
on F160b (E160BEST)
252-260 F9.4 arcsec a_F160b [13.6/350]?=-99 160um aperture radius
262-265 I4 arcsec rmin [21/220]?=-99 Minor semi-axis of customised
aperture (AP_RMIN)
267-277 F11.6 deg PA ?=-99 Positional angle of customised
aperture (AP_PA)
279-290 F12.8 deg RASdeg [190.3/208]? Right ascension of the optical
ID from SDSS DR10 (OPTICALRA)
292-302 F11.8 deg DESdeg [22/36]? Declination of the optical ID
from SDSS DR10 (OPTICALDEC)
304-310 F7.4 arcsec Sep [0.009/26.5]? SPIRE-optical separation
(SEPARATION_ARCSEC)
312-320 F9.4 --- Lk [0/1931]? Likelihood from automated method
(LIKELIHOOD)
322-327 F6.4 --- Rel [0/2]? Reliability (if ≥1 or <0 this has been
fixed manually: f_ID=R or M) (RELIABILITY)
329-331 F3.1 --- OT [0/2]? Object type flag (0=gal, 1=star,
2=quasar) (GSQ_FLAG)
333-337 A5 --- f_ID Flag from eyeballing (ID_FLAG) (1)
339-357 I19 --- objID ?=-99 SDSS DR10 objID if present (SDSS_OBJID)
359-365 F7.4 mag rmag [7.9/22.4]? Model magnitude in r filter,
AB scale (SDSSMODELMAGR)
367-372 F6.4 mag e_rmag [0.0002/5.4]? rmag uncertainty
(SDSSMODELMAGERRR)
374-380 F7.4 mag gmag [8.4/31.5]? Model magnitude in g filter,
AB scale (SDSSMODELMAGG)
382-388 F7.4 mag e_gmag [0.0004/23]? gmag uncertainty
(SDSSMODELMAGERRG)
390-396 F7.4 mag imag [7.8/33.4]? Model magnitude in i filter,
AB scale (SDSSMODELMAGI)
398-404 F7.4 mag e_imag [0.0002/35]? imag uncertainty
(SDSSMODELMAGERRI)
406-414 F9.6 mag rpmag [7.9/26.3]? PSF magnitude in r band
(SDSSPSFMAGR)
416-424 F9.6 mag e_rpmag [4.4e-5/84]? rpmag uncertainty
(SDSSPSFMAGERRR)
426-431 F6.4 mag Ar [0.015/0.12]? SDSS r-band extinction
(SDSSEXTINCTIONR)
433-441 F9.6 --- zph [-0.009/1]? SDSS DR10 photometric redshift
(SDSS_PHOTOZ)
443-454 F12.6 --- e_zph [0.004/0.4]? zph uncertainty (SDSS_PHOTOZERR)
456-458 I3 --- r_zsp [-99/1] Reference for zsp (1=SDSS DR10;
2=CfA Redshift Survey) (Z_SOURCE)
460-470 F11.7 --- zsp [-0.0015/5.2]? Spectroscopic redshift from
many surveys (Z_SPEC) (2)
472-474 I3 --- q_zsp [-99/5] Quality flag on zsp (≥3 is OK to use)
(Z_QUAL) (3)
476-485 F10.6 mag pYmag [8.8/27]? UKIDSS-DR9 Petrosian Y magnitude
(YPETROMAG)
487-496 F10.6 mag e_pYmag [0.0001/154]? pYmag uncertainty (YPETROMAGERR)
498-507 F10.6 mag pJmag1 [8/23.2]? UKIDSS-DR9 Petrosian J magnitude 1
(J_1PETROMAG)
509-518 F10.6 mag e_pJmag1 [0.0001/5]? pJmag1 uncertainty (J_1PETROMAGERR)
520-529 F10.6 mag pHmag [7.9/23]? UKIDSS-DR9 Petrosian H magnitude
(HPETROMAG)
531-540 F10.6 mag e_pHmag [0.0001/16]? pHmag uncertainty (HPETROMAGERR)
542-551 F10.6 mag pKmag [8.3/21.1]? UKIDSS-DR9 Petrosian K magnitude
(KPETROMAG)
553-562 F10.6 mag e_pKmag [0.0002/6]? pKmag uncertainty (KPETROMAGERR)
564-573 F10.6 arcsec rPrad [0.03/259]? SDSS Petrosian radius in r band
(PETRORAD_R)
575-584 F10.6 arcsec e_rPrad [1.8e-5/62]? rPrad uncertainty (PETRORADERR_R)
586-595 F10.6 arcsec Prad90 [0.03/253]? SDSS Petrosian radius (PETROR90_R)
597-606 F10.6 arcsec e_Prad90 [0.003/25]? Prad90 uncertainty (PETROR90ERR_R)
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Note (1): The column f_ID (ID_FLAG) contains flags assigned during
post-processing. The brightest 1300 SPIRE sources were examined by eye
after the completion of the LR analysis in order to validate automated
results in these special cases where they are most likely to fail. In
addition, the positions of bright stars from the Tycho catalogue were
eyeballed to ensure that their IDs were not missed and that they had
not been misclassified.
As a result, the following flags were assigned in the ID_FLAG column:
R = Resolved SPIRE source where the counterpart was missed or appeared
unreliable due to a large optical-SPIRE separation. The reliability
was fixed manually after visual inspection (Rnew=Rformula+1) to
ensure the ID meets the reliability cut.
M = SPIRE source with merger ID(s), which caused the reliability to be
underestimated. The reliability was fixed manually after visual
inspection (Rnew=Rformula+1) thus ensuring the ID meets the
reliability cut. Note that in a small number of cases two 'reliable'
IDs were given to a single SPIRE source where it was obvious that the
emission was roughly equally shared between the two merging galaxies.
V = Visible galaxy in optical image but missing from SDSS DR10, for
example because the galaxy falls under a bright star mask. No optical
ID given in catalogue, but the flag indicates that it is visible in
the optical.
Note (2): Spectroscopic redshifts are obtained from SDSS DR10 and CfA Redshift
Survey. Given the lack of quality flag in the CfA catalogue, for
objects that have redshift in both surveys, the CfA redshift is used
in preference only if there is a redshift warning flag for the object
in the SDSS DR10.
Note (3): SDSS redshifts with spectroscopic flags (ZWARNING) have been
flagged as follows:
2 = Z_FITLIMIT: chi-squared minimum at edge of the redshift fitting
range
3 = MANY_OUTLIERS: fraction of points more than 5 sigma away from best
model is too large (> 0.05) or
NEGATIVE_EMISSION: a QSO line exhibits negative emission, triggered
only in QSO spectra, if C_IV, C_III, Mg_II, H_beta, or H_alpha has
LINEAREA+3*LINEAREA_ERR<0)
0 = Any other spectra flag.
5 = No spectra flags.
-99 = No z value.
For more details of the SDSS spectroscopic flags see
http://www.sdss3.org/dr10/algorithms/bitmask_zwarning.php
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Byte-by-byte Description of file: hatlas2sgp.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [HATLAS]
7- 22 A16 --- HATLAS HATLAS designation (JHHMMSS.s+DDMMSS)
24- 37 A14 --- ID HATLAS short name (IDNAME)
39- 48 F10.6 deg RAdeg Right ascension (J2000) (RA)
50- 59 F10.6 deg DEdeg [-36.1/-27.1] Declination (J2000) (DEC)
61- 68 F8.6 Jy F250 [0.004/8.1] Herschel/SPIRE 250um flux from MF
70- 78 F9.6 Jy F350 [-0.02/3.3] Herschel/SPIRE 350um flux from MF
80- 88 F9.6 Jy F500 [-0.03/1.3] Herschel/SPIRE 500um flux from MF
90- 97 F8.6 Jy e_F250 [0.004/0.02] 1σ error on F250 assuming
confusion noise variable with flux (E250)
99-106 F8.6 Jy e_F350 [0.007/0.02] 1σ error on F350 assuming
confusion noise variable with flux (E350)
108-115 F8.6 Jy e_F500 [0.007/0.02] 1σ error on F500 assuming
confusion noise variable with flux (E500)
117-125 F9.6 Jy F250b [0.004/51.7] 250um best flux (F250BEST)
127-134 F8.6 Jy e_F250b [0.004/3.3] 1σ error on F250b (E250BEST)
136-144 F9.4 arcsec a_F250b [20.6/300]?=-99 250um aperture radius
146-154 F9.6 Jy F350b [-0.02/25] 350um best flux (F350BEST)
156-163 F8.6 Jy e_F350b [0.007/2] 1σ error on F350b (E350BEST)
165-173 F9.4 arcsec a_F350b [24/300]?=-99 350um aperture radius
175-183 F9.6 Jy F500b [-0.03/11] 500um best flux (F500BEST)
185-192 F8.6 Jy e_F500b [0.007/0.9] 1σ error on F500b (E500BEST)
194-202 F9.4 arcsec a_F500b [35/300]?=-99 500um aperture radius
204-212 F9.6 Jy F100b [-0.3/68.1]?=-1 Herschel/PACS 100um best flux
from aperture photometry (F100BEST)
214-222 F9.6 Jy e_F100b [0.03/1.3]?=-1 1σ error on F100b
(E100BEST)
224-232 F9.4 arcsec a_F100b [11.4/300]?=-99 100um aperture radius
234-242 F9.6 Jy F160b [-0.2/95]?=-1 Herschel/PACS 160um best flux from
aperture photometry (F160BEST)
244-252 F9.6 Jy e_F160b [0.03/1]?=-1 1σ error on F160b (E160BEST)
254-262 F9.4 arcsec a_F160b [13.6/300]?=-99 160um aperture radius
264-267 I4 arcsec rmin [18/180]?=-99 Minor semi-axis of customised
aperture (AP_RMIN)
269-279 F11.6 deg PA ? Positional angle of customised aperture
(AP_PA)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [HATLAS]
8- 23 A16 --- HATLAS HATLAS designation (JHHMMSS.s+DDMMSS)
25- 30 F6.3 Jy F350b [0.2/25]? H-ATLAS 350um best flux density
32- 36 F5.3 Jy e_F350b [0.008/3]? F350b uncertainty
38- 43 F6.3 Jy F350P [0.06/24.6]? Planck 350um flux density
45- 49 F5.3 Jy e_F350P [0.1/3.6]? F350P uncertainty
51- 56 F6.3 Jy F500b [0.09/10.7]? H-ATLAS 500um best flux density
58- 62 F5.3 Jy e_F500b [0.008/1.2]? F500b uncertainty
64- 69 F6.3 Jy F500P [0.4/11.8]? Planck 500um flux density
71- 75 F5.3 Jy e_F500P [0.1/0.6]? F500P uncertainty
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History:
From electronic version of the journal for Table 2.
HATLASNGPCATDR2V1.4.FITS and HATLASSGPCATDR2V1.4.FITS
downloaded from: http://www.h-atlas.org/public-data/download
References:
Smith et al. Paper I. 2017ApJS..233...26S 2017ApJS..233...26S
Maddox et al. Paper II. 2018ApJS..236...30M 2018ApJS..236...30M This catalog
Furlanetto et al. Paper III. 2018MNRAS.476..961F 2018MNRAS.476..961F
(End) Emmanuelle Perret [CDS] 26-Feb-2020