J/MNRAS/467/4220 Galaxies inside 120 arcsec of HE 0435-1223 (Rusu+, 2017)
H0LiCOW - III. Quantifying the effect of mass along the line of sight to the
gravitational lens HE 0435-1223 through weighted galaxy counts.
Rusu C.E., Fassnacht C.D., Sluse D., Hilbert S., Wong K.C., Huang K.-H.,
Suyu S.H., Collett T.E., Marshall P.J., Treu T., Koopmans L.V.E.
<Mon. Not. R. Astron. Soc., 467, 4220-4242 (2017)>
=2017MNRAS.467.4220R 2017MNRAS.467.4220R (SIMBAD/NED BibCode)
ADC_Keywords: Gravitational lensing ; Galaxies, photometry ; Redshifts ;
Photometry, SDSS ; Photometry, infrared
Keywords: gravitational lensing: strong - methods: statistical -
quasars: individual: HE 0435-1223 - cosmological parameters -
distance scale
Abstract:
Based on spectroscopy and multiband wide-field observations of the
gravitationally lensed quasar HE 0435-1223, we determine the
probability distribution function of the external convergence
κext for this system. We measure the under/overdensity of the
line of sight towards the lens system and compare it to the average
line of sight throughout the Universe, determined by using the
CFHTLenS (The Canada France Hawaii Lensing Survey) as a control field.
Aiming to constrain κext as tightly as possible, we determine
under/overdensities using various combinations of relevant informative
weighting schemes for the galaxy counts, such as projected distance to
the lens, redshift and stellar mass. We then convert the measured
under/overdensities into a κext distribution, using
ray-tracing through the Millennium Simulation. We explore several
limiting magnitudes and apertures, and account for systematic and
statistical uncertainties relevant to the quality of the observational
data, which we further test through simulations. Our most robust
estimate of κext has a median value κmedext=0.004
and a standard deviation σκ=0.025. The measured
σκ corresponds to 2.5 per cent relative uncertainty on
the time delay distance, and hence the Hubble constant H0 inferred
from this system. The median κmedext value varies by
∼0.005 with the adopted aperture radius, limiting magnitude and
weighting scheme, as long as the latter incorporates galaxy number
counts, the projected distance to the main lens and a prior on the
external shear obtained from mass modelling. This corresponds to just
∼0.5 per cent systematic impact on H0. The availability of a
well-constrained κext makes HE 0435-1223 a valuable system for
measuring cosmological parameters using strong gravitational lens time
delays.
Description:
In order to characterize the HE 0435-1223 field, we require a
catalogue of galaxy properties, such as galaxy redshifts and stellar
masses. To this end, we have obtained multiband, wide-field imaging
observations of HE 0435-1223, from ultraviolet to near/mid-infrared
wavelengths.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 199 272 Catalogue of i≤24 galaxies inside 120 arcsec of
HE 0435-1223 (Tables A1 and A2 from the paper)
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 12 F12.9 deg RAdeg Right ascension (J2000)
14- 26 F13.9 deg DEdeg Declination (J2000)
28- 32 F5.2 mag imagtot Total i magnitude (SExractor magAuto) (1)
34- 38 F5.2 mag umag ? Subaru/Suprime-Cam u magnitude (1)
40- 44 F5.2 mag e_umag rms uncertainty on umag
46- 50 F5.2 mag gmag Subaru/Suprime-Cam g magnitude (1)
52- 55 F4.2 mag e_gmag rms uncertainty on gmag
57- 61 F5.2 mag rmag Subaru/Suprime-Cam r magnitude (1)
63- 66 F4.2 mag e_rmag rms uncertainty on rmag
68- 72 F5.2 mag imag Subaru/Suprime-Cam i magnitude (1)
74- 77 F4.2 mag e_imag rms uncertainty on imag
79- 83 F5.2 mag Jmag ? Gemini North/NIRI J magnitude,
calibrated on 2MASS system
85- 89 F5.2 mag e_Jmag rms uncertainty on Jmag
91- 95 F5.2 mag Hmag ? Subaru/MOIRCS 2MASS H magnitude,
calibrated on 2MASS system
97-101 F5.2 mag e_Hmag ? rms uncertainty on Hmag
103-107 F5.2 mag Ksmag ? Gemini North/NIRI Ks magnitude,
109-112 F4.2 mag e_Ksmag ? rms uncertainty on Ksmag
calibrated on 2MASS system
114-120 F7.5 --- z Redshift
122-126 F5.3 --- e_z ? Error on z, lower value 16 percentile (z16)
128-132 F5.3 --- E_z ? Error on z, upper value 84 percentile (z84)
134-138 F5.2 mag IRAC1 ? IRAC1 (3.6um) magnitude
140-143 F4.2 mag e_IRAC1 ? rms uncertainty on IRAC1
145-149 F5.2 mag IRAC2 ? IRAC2 (4.5um) magnitude
151-154 F4.2 mag e_IRAC2 ? rms uncertainty on IRAC2
156-160 F5.2 mag IRAC3 ? IRAC3 (5.7um) magnitude
162-165 F4.2 mag e_IRAC3 ? rms uncertainty on IRAC3
167-171 F5.2 mag IRAC4 ? IRAC4 (7.9um) magnitude
173-176 F4.2 mag e_IRAC4 ? rms uncertainty on IRAC4
178-184 F7.4 [Msun] logMstar Stellar mass
186-192 F7.4 [Msun] logMhalo Halo mass
194-199 F6.2 arcsec Sep Separation of HE 0435-1223
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Note (1): Reported magnitudes are corrected for atmospheric (when necessary) and
galactic extinction, but not for the zero-point offsets estimated by BPZ
(with the exception of imagtot; see text).
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History:
From electronic version of the journal
References:
Suyu et al., Paper I 2017MNRAS.468.2590S 2017MNRAS.468.2590S
Sluse et al., Paper II 2017MNRAS.470.4838S 2017MNRAS.470.4838S
Wong et al., Paper IV 2017MNRAS.465.4895W 2017MNRAS.465.4895W
Bonvin et al., Paper V 2017MNRAS.465.4914B 2017MNRAS.465.4914B
Ding et al., Paper VI 2017MNRAS.465.4634D 2017MNRAS.465.4634D
Ding et al., Paper VII 2017MNRAS.472...90D 2017MNRAS.472...90D
Tihhonova et al., Paper VIII 2018MNRAS.477.5657T 2018MNRAS.477.5657T
Birrer et al., Paper IX 2019MNRAS.484.4726B 2019MNRAS.484.4726B
(End) Patricia Vannier [CDS] 29-Nov-2019