J/MNRAS/465/3558 HATLAS candidate lensed galaxies (Negrello+, 2017)
The Herschel-ATLAS: a sample of 500 µm-selected lensed galaxies over
600 deg2.
Negrello M., Amber S., Amvrosiadis A., Cai Z.-Y., Lapi A.,
Gonzalez-Nuevo J., De Zotti G., Furlanetto C., Maddox S.J., Allen M.,
Bakx T., Bussmann R.S., Cooray A., Covone G., Danese L., Dannerbauer H.,
Fu H., Greenslade J., Gurwell M., Hopwood R., Koopmans L.V.E.,
Napolitano N., Nayyeri H., Omont A., Petrillo C.E., Riechers D.A.,
Serjeant S., Tortora C., Valiante E., Verdoes Kleijn G., Vernardos G.,
Wardlow J.L., Baes M., Baker A.J., Bourne N., Clements D., Crawford S.M.,
Dye S., Dunne L., Eales S., Ivison R.J., Marchetti L., Michalowski M.J.,
Smith M.W.L., Vaccari M., van der Werf P.
<Mon. Not. R. Astron. Soc., 465, 3558-3580 (2017)>
=2017MNRAS.465.3558N 2017MNRAS.465.3558N (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Gravitational lensing ; Redshifts ;
Photometry, millimetric/submm
Keywords: gravitational lensing: strong - galaxies: evolution -
galaxies: high-redshift - submillimetre: galaxies
Abstract:
We present a sample of 80 candidate strongly lensed galaxies with flux
density above 100mJy at 500µm extracted from the Herschel
Astrophysical Terahertz Large Area Survey, over an area of 600deg2.
Available imaging and spectroscopic data allow us to confirm the
strong lensing in 20 cases and to reject it in one case. For other
eight objects, the lensing scenario is strongly supported by the
presence of two sources along the same line of sight with distinct
photometric redshifts. The remaining objects await more follow-up
observations to confirm their nature. The lenses and the background
sources have median redshifts zL=0.6 and zS=2.5, respectively,
and are observed out to zL=1.2 and zS=4.2. We measure the
number counts of candidate lensed galaxies at 500µm and compare
them with theoretical predictions, finding a good agreement for a
maximum magnification of the background sources in the range 10-20.
These values are consistent with the magnification factors derived
from the lens modelling of individual systems. The catalogue presented
here provides sub-mm bright targets for follow-up observations aimed
at exploiting gravitational lensing, to study with unprecedented
details the morphological and dynamical properties of dusty
star-forming regions in z≥1.5 galaxies.
Description:
Candidate lensed galaxies were selected from the Herschel/SPIRE
(Griffin et al., 2010A&A...518L...3G 2010A&A...518L...3G) catalogue of the H-ATLAS Data
Release 1 and 2 (Valiante et al., 2016, Cat. J/MNRAS/462/3146).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 148 82 List of candidate lensed galaxies with
F500≥100mJy extracted from the
∼600deg2 of the H-ATLAS fields
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See also:
J/MNRAS/462/3146 : Herschel-ATLAS DR1 (Valiante+, 2016)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 26 A26 --- Field Field
28- 33 A6 --- --- [HATLAS]
34- 49 A16 --- HATLAS IAU name (JHHMMSS.s+DDMMSS)
50- 58 A9 --- n_HATLAS Note on HATLAS (1)
61- 65 F5.1 mJy F250 ?=- Herschel/SPIRE flux density at 250um
67- 69 F3.1 mJy e_F250 ? rms uncertainty on F250
71- 75 F5.1 mJy F350 ?=- Herschel/SPIRE flux density at 350um
77- 79 F3.1 mJy e_F350 ? rms uncertainty on F350
81- 85 F5.1 mJy F500 ?=- Herschel/SPIRE flux density at 500um
87- 89 F3.1 mJy e_F500 ? rms uncertainty on F500
91- 95 F5.3 --- Rel ?=- Reliability of association with any SDSS
source within 5 arcsec from the SPIRE
position and with r<22.4
(Bourne et al. 2016MNRAS.462.1714B 2016MNRAS.462.1714B;
Furlanetto et al. 2018MNRAS.476..961F 2018MNRAS.476..961F)
97-101 F5.3 arcsec Sep ?=- Distance of the SDSS source from the SPIRE
detection and its AB r-band magnitude
103-106 F4.1 mag rmag ?=- AB r-band magnitude of SDSS source
108-113 F6.4 --- zSDSS ?=- Redshift of the SDSS association (2)
115-119 F5.3 --- e_zSDSS ? rms uncertainty on zSDSS
120 A1 --- f_zSDSS [sp] s for spectroscopic, p for photometric
redshift
121 A1 --- n_zSDSS [abcd] Note on zSDSS (3)
124-129 F6.4 --- zSPIRE ?=- Redshift of the SPIRE source (2)
131-134 F4.2 --- e_zSPIRE ? rms uncertainty on zSPIRE
135 A1 --- f_zSPIRE [sp] s for spectroscopic, p for photometric
redshift
136 A1 --- n_zSPIRE [abcd] Note on zSPIRE (3)
138 A1 --- Lrank [ABCD] Lensing rank (4)
140 A1 --- l_mu Limit flag on mu
141-144 F4.1 --- mu ? Magnification factor derived from the
modelling of high-resolution sub-mm/mm
imaging data
146-148 F3.1 --- e_mu ? rms uncertainty on mu
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Note (1): Notes as follows:
B13 = Bussmann et al. (2013ApJ...779...25B 2013ApJ...779...25B)
I13 = Ivison et al. (2013ApJ...772..137I 2013ApJ...772..137I)
F12 = Fu et al. (2012ApJ...753..134F 2012ApJ...753..134F)
M14 = Messias et al. (2014A&A...568A..92M 2014A&A...568A..92M)
B12 = Bussmann et al. (2012ApJ...756..134B 2012ApJ...756..134B)
G13 = George et al. (2013MNRAS.436L..99G 2013MNRAS.436L..99G)
C14 = Calanog et al. (2014, Cat. J/ApJ/797/138)
Note (2): when no spectroscopic measurement is available, the photometric
redshift is provided instead.
Note (3): Notes as follows:
a = From CARMA (Riechers et al., in preparation)
b = from PdBI (Yang et al., 2016, Cat. J/A+A/595/A80)
c = from NTT (Amber, 2015, PhD thesis, The Open University)
d = Stanford et al. (2014, Cat. J/ApJS/213/25)
Note (4): lensing rank as follows:
A = confirmed to be lensed
B = likely to be lensed
C = unclear
D = not (strongly) lensed
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Nov-2018