Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy
S Paltani
,
J Coupon
,
W.G Hartley
,
A Alvarez-Ayllon
,
F Dubath
,
J.J Mohr
,
M Schirmer
,
J.-C Cuillandre
(1)
,
G Desprez
,
O Ilbert
(2)
,
K Kuijken
,
N Aghanim
(3)
,
B Altieri
,
A Amara
,
N Auricchio
,
M Baldi
,
R Bender
,
C Bodendorf
,
D Bonino
,
E Branchini
,
M Brescia
,
J Brinchmann
,
S Camera
,
V Capobianco
,
C Carbone
,
V.F Cardone
,
J Carretero
,
F.J Castander
,
M Castellano
,
S Cavuoti
,
R Cledassou
(4, 5)
,
G Congedo
,
C.J Conselice
,
L Conversi
,
Y Copin
(6)
,
L Corcione
,
F Courbin
,
M Cropper
,
A da Silva
,
H Degaudenzi
,
J Dinis
,
M Douspis
(3)
,
X Dupac
,
S Dusini
,
S Farrens
(1)
,
S Ferriol
(6)
,
P Fosalba
,
M Frailis
,
E Franceschi
,
P Franzetti
,
S Galeotta
,
B Garilli
,
W Gillard
(7)
,
B Gillis
,
C Giocoli
,
A Grazian
,
S.V Haugan
,
H Hoekstra
,
A Hornstrup
,
P Hudelot
(8)
,
K Jahnke
,
M Kümmel
,
S Kermiche
(7)
,
A Kiessling
,
M Kilbinger
(1)
,
T Kitching
,
R Kohley
,
B Kubik
(6)
,
M Kunz
,
H Kurki-Suonio
,
S Ligori
,
P.B Lilje
,
I Lloro
,
E Maiorano
,
O Mansutti
,
O Marggraf
,
K Markovic
,
F Marulli
,
R Massey
,
D.C Masters
,
S Maurogordato
(9)
,
H.J Mccracken
(8)
,
E Medinaceli
,
S Mei
(10)
,
M Melchior
,
M Meneghetti
,
E Merlin
,
G Meylan
,
M Moresco
,
L Moscardini
,
E Munari
,
S.-M Niemi
,
J Nightingale
,
C Padilla
,
F Pasian
,
K Pedersen
,
W.J Percival
,
V Pettorino
(1)
,
G Polenta
,
M Poncet
(4)
,
L.A Popa
,
F Raison
,
R Rebolo
,
A Renzi
,
J Rhodes
,
G Riccio
,
E Romelli
,
M Roncarelli
,
E Rossetti
,
R Saglia
,
D Sapone
,
B Sartoris
,
P Schneider
,
A Secroun
(7)
,
C Sirignano
,
G Sirri
,
J Skottfelt
,
L Stanco
,
J.-L Starck
(1)
,
C Surace
(2)
,
P Tallada-Crespí
,
I Tereno
,
R Toledo-Moreo
,
F Torradeflot
,
I Tutusaus
(11)
,
E.A Valentijn
,
L Valenziano
,
T Vassallo
,
Y Wang
,
G Zamorani
,
J Zoubian
(7)
,
S Andreon
,
H Aussel
(1)
,
S Bardelli
,
M Bolzonella
,
A Boucaud
(10)
,
D Di Ferdinando
,
M Farina
,
J Graciá-Carpio
,
V Lindholm
,
D Maino
,
N Mauri
,
C Neissner
,
V Scottez
(8, 12)
,
E Zucca
,
C Baccigalupi
,
M Ballardini
,
A Biviano
,
A Blanchard
(11)
,
S Borgani
,
A.S Borlaff
,
C Burigana
,
R Cabanac
(11)
,
A Cappi
(9)
,
C.S Carvalho
,
S Casas
,
G Castignani
,
K Chambers
,
A.R Cooray
,
H.M Courtois
(6)
,
O Cucciati
,
S Davini
,
G de Lucia
,
H Dole
(3)
,
J.A Escartin
,
S Escoffier
(7)
,
F Finelli
,
S Fotopoulou
,
K Ganga
(10)
,
K George
,
G Gozaliasl
,
H Hildebrandt
,
I Hook
,
A. Jimenez Muñoz
(13)
,
B Joachimi
,
V Kansal
(1)
,
E Keihanen
,
C.C Kirkpatrick
,
A Loureiro
,
J Macias-Perez
(13)
,
G Maggio
,
M Magliocchetti
,
R Maoli
,
S Marcin
,
M Martinelli
,
N Martinet
(2)
,
S Matthew
,
L Maurin
(3)
,
R.B Metcalf
,
P Monaco
,
G Morgante
,
S Nadathur
,
A.A Nucita
,
L Patrizii
,
J.E Pollack
(10)
,
V Popa
,
C Porciani
,
D Potter
,
A Pourtsidou
,
L Pozzetti
,
M Pöntinen
,
P Reimberg
(8)
,
A.G Sánchez
,
Z Sakr
(11)
,
E Sefusatti
,
M Sereno
,
A. Spurio Mancini
,
J Stadel
,
J Steinwagner
,
R Teyssier
,
C Valieri
,
J Valiviita
,
S.E van Mierlo
,
A Veropalumbo
,
M Viel
,
J.R Weaver
1
AIM (UMR7158 / UMR_E_9005 / UM_112) -
Astrophysique Interprétation Modélisation
2 LAM - Laboratoire d'Astrophysique de Marseille
3 IAS - Institut d'astrophysique spatiale
4 CNES - Centre National d'Études Spatiales [Toulouse]
5 IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS
6 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
7 CPPM - Centre de Physique des Particules de Marseille
8 IAP - Institut d'Astrophysique de Paris
9 LAGRANGE - Joseph Louis LAGRANGE
10 APC (UMR_7164) - AstroParticule et Cosmologie
11 IRAP - Institut de recherche en astrophysique et planétologie
12 METRICS - Evaluation des technologies de santé et des pratiques médicales - ULR 2694
13 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 LAM - Laboratoire d'Astrophysique de Marseille
3 IAS - Institut d'astrophysique spatiale
4 CNES - Centre National d'Études Spatiales [Toulouse]
5 IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS
6 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
7 CPPM - Centre de Physique des Particules de Marseille
8 IAP - Institut d'Astrophysique de Paris
9 LAGRANGE - Joseph Louis LAGRANGE
10 APC (UMR_7164) - AstroParticule et Cosmologie
11 IRAP - Institut de recherche en astrophysique et planétologie
12 METRICS - Evaluation des technologies de santé et des pratiques médicales - ULR 2694
13 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
S Paltani
- Function : Author
J Coupon
- Function : Author
W.G Hartley
- Function : Author
A Alvarez-Ayllon
- Function : Author
F Dubath
- Function : Author
J.J Mohr
- Function : Author
M Schirmer
- Function : Author
G Desprez
- Function : Author
K Kuijken
- Function : Author
B Altieri
- Function : Author
A Amara
- Function : Author
N Auricchio
- Function : Author
M Baldi
- Function : Author
R Bender
- Function : Author
C Bodendorf
- Function : Author
D Bonino
- Function : Author
E Branchini
- Function : Author
M Brescia
- Function : Author
J Brinchmann
- Function : Author
S Camera
- Function : Author
V Capobianco
- Function : Author
C Carbone
- Function : Author
V.F Cardone
- Function : Author
J Carretero
- Function : Author
F.J Castander
- Function : Author
M Castellano
- Function : Author
S Cavuoti
- Function : Author
G Congedo
- Function : Author
C.J Conselice
- Function : Author
L Conversi
- Function : Author
L Corcione
- Function : Author
F Courbin
- Function : Author
M Cropper
- Function : Author
A da Silva
- Function : Author
H Degaudenzi
- Function : Author
J Dinis
- Function : Author
X Dupac
- Function : Author
S Dusini
- Function : Author
P Fosalba
- Function : Author
M Frailis
- Function : Author
E Franceschi
- Function : Author
P Franzetti
- Function : Author
S Galeotta
- Function : Author
B Garilli
- Function : Author
B Gillis
- Function : Author
C Giocoli
- Function : Author
A Grazian
- Function : Author
S.V Haugan
- Function : Author
H Hoekstra
- Function : Author
A Hornstrup
- Function : Author
K Jahnke
- Function : Author
M Kümmel
- Function : Author
A Kiessling
- Function : Author
T Kitching
- Function : Author
R Kohley
- Function : Author
M Kunz
- Function : Author
H Kurki-Suonio
- Function : Author
S Ligori
- Function : Author
P.B Lilje
- Function : Author
I Lloro
- Function : Author
E Maiorano
- Function : Author
O Mansutti
- Function : Author
O Marggraf
- Function : Author
K Markovic
- Function : Author
F Marulli
- Function : Author
R Massey
- Function : Author
D.C Masters
- Function : Author
S Maurogordato
- Function : Author
- PersonId : 178924
- IdHAL : sophie-maurogordato
- ORCID : 0000-0002-5477-8454
- IdRef : 033990018
E Medinaceli
- Function : Author
M Melchior
- Function : Author
M Meneghetti
- Function : Author
E Merlin
- Function : Author
G Meylan
- Function : Author
M Moresco
- Function : Author
L Moscardini
- Function : Author
E Munari
- Function : Author
S.-M Niemi
- Function : Author
J Nightingale
- Function : Author
C Padilla
- Function : Author
F Pasian
- Function : Author
K Pedersen
- Function : Author
W.J Percival
- Function : Author
G Polenta
- Function : Author
L.A Popa
- Function : Author
F Raison
- Function : Author
R Rebolo
- Function : Author
A Renzi
- Function : Author
J Rhodes
- Function : Author
G Riccio
- Function : Author
E Romelli
- Function : Author
M Roncarelli
- Function : Author
E Rossetti
- Function : Author
R Saglia
- Function : Author
D Sapone
- Function : Author
B Sartoris
- Function : Author
P Schneider
- Function : Author
C Sirignano
- Function : Author
G Sirri
- Function : Author
J Skottfelt
- Function : Author
L Stanco
- Function : Author
P Tallada-Crespí
- Function : Author
I Tereno
- Function : Author
R Toledo-Moreo
- Function : Author
F Torradeflot
- Function : Author
I Tutusaus
- Function : Author
- PersonId : 1360271
- ORCID : 0000-0002-3199-0399
- IdRef : 241364418
E.A Valentijn
- Function : Author
L Valenziano
- Function : Author
T Vassallo
- Function : Author
Y Wang
- Function : Author
G Zamorani
- Function : Author
S Andreon
- Function : Author
S Bardelli
- Function : Author
M Bolzonella
- Function : Author
A Boucaud
- Function : Author
- PersonId : 178154
- IdHAL : aboucaud
- ORCID : 0000-0001-7387-2633
D Di Ferdinando
- Function : Author
M Farina
- Function : Author
J Graciá-Carpio
- Function : Author
V Lindholm
- Function : Author
D Maino
- Function : Author
N Mauri
- Function : Author
C Neissner
- Function : Author
E Zucca
- Function : Author
C Baccigalupi
- Function : Author
M Ballardini
- Function : Author
A Biviano
- Function : Author
A Blanchard
- Function : Author
- PersonId : 1376976
- ORCID : 0000-0001-8555-9003
- IdRef : 030229464
S Borgani
- Function : Author
A.S Borlaff
- Function : Author
C Burigana
- Function : Author
C.S Carvalho
- Function : Author
S Casas
- Function : Author
G Castignani
- Function : Author
K Chambers
- Function : Author
A.R Cooray
- Function : Author
O Cucciati
- Function : Author
S Davini
- Function : Author
G de Lucia
- Function : Author
J.A Escartin
- Function : Author
S Escoffier
- Function : Author
- PersonId : 179794
- IdHAL : stephanie-escoffier
- ORCID : 0000-0002-2847-7498
- IdRef : 068869215
F Finelli
- Function : Author
S Fotopoulou
- Function : Author
K George
- Function : Author
G Gozaliasl
- Function : Author
H Hildebrandt
- Function : Author
I Hook
- Function : Author
B Joachimi
- Function : Author
E Keihanen
- Function : Author
C.C Kirkpatrick
- Function : Author
A Loureiro
- Function : Author
J Macias-Perez
- Function : Author
- PersonId : 830870
- IdHAL : juan-francisco-macias-perez
G Maggio
- Function : Author
M Magliocchetti
- Function : Author
R Maoli
- Function : Author
S Marcin
- Function : Author
M Martinelli
- Function : Author
S Matthew
- Function : Author
R.B Metcalf
- Function : Author
P Monaco
- Function : Author
G Morgante
- Function : Author
S Nadathur
- Function : Author
A.A Nucita
- Function : Author
L Patrizii
- Function : Author
V Popa
- Function : Author
C Porciani
- Function : Author
D Potter
- Function : Author
A Pourtsidou
- Function : Author
L Pozzetti
- Function : Author
M Pöntinen
- Function : Author
A.G Sánchez
- Function : Author
E Sefusatti
- Function : Author
M Sereno
- Function : Author
A. Spurio Mancini
- Function : Author
J Stadel
- Function : Author
J Steinwagner
- Function : Author
R Teyssier
- Function : Author
C Valieri
- Function : Author
J Valiviita
- Function : Author
S.E van Mierlo
- Function : Author
A Veropalumbo
- Function : Author
M Viel
- Function : Author
J.R Weaver
- Function : Author
Abstract
The technique of photometric redshifts has become essential for the exploitation of multi-band extragalactic surveys. While the requirements on photo-zs for the study of galaxy evolution mostly pertain to the precision and to the fraction of outliers, the most stringent requirement in their use in cosmology is on the accuracy, with a level of bias at the sub-percent level for the Euclid cosmology mission. A separate, and challenging, calibration process is needed to control the bias at this level of accuracy. The bias in photo-zs has several distinct origins that may not always be easily overcome. We identify here one source of bias linked to the spatial or time variability of the passbands used to determine the photometric colours of galaxies. We first quantified the effect as observed on several well-known photometric cameras, and found in particular that, due to the properties of optical filters, the redshifts of off-axis sources are usually overestimated. We show using simple simulations that the detailed and complex changes in the shape can be mostly ignored and that it is sufficient to know the mean wavelength of the passbands of each photometric observation to correct almost exactly for this bias; the key point is that this mean wavelength is independent of the spectral energy distribution of the source. We use this property to propose a correction that can be computationally efficiently implemented in some photo-z algorithms, in particular template-fitting. We verified that our algorithm, implemented in the new photo-z code Phosphoros, can effectively reduce the bias in photo-zs on real data using the CFHTLS T007 survey, with an average measured bias Delta z over the redshift range 0.4
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Astrophysics [astro-ph]Origin | Publisher files allowed on an open archive |
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