Euclid preparation: XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy

被引：0

作者：

Paltani S. ^{[1
]}

Coupon J. ^{[1
]}

Hartley W.G. ^{[1
]}

Alvarez-Ayllon A. ^{[1
]}

Dubath F. ^{[1
]}

Mohr J.J. ^{[2
,3
]}

Schirmer M. ^{[4
]}

Cuillandre J.-C. ^{[5
]}

Desprez G. ^{[1
,6
]}

Ilbert O. ^{[7
]}

Kuijken K. ^{[8
]}

Aghanim N. ^{[9
]}

Altieri B. ^{[10
]}

Amara A. ^{[11
]}

Auricchio N. ^{[12
]}

Baldi M. ^{[12
,13
,14
]}

Bender R. ^{[3
,15
]}

Bodendorf C. ^{[3
]}

Bonino D. ^{[16
]}

Branchini E. ^{[17
,18
]}

Brescia M. ^{[19
,20
]}

Brinchmann J. ^{[21
]}

Camera S. ^{[16
,22
,23
]}

Capobianco V. ^{[16
]}

Carbone C. ^{[24
]}

Cardone V.F. ^{[25
,26
]}

Carretero J. ^{[27
,28
]}

Castander F.J. ^{[29
,30
]}

Castellano M. ^{[25
]}

Cavuoti S. ^{[20
,31
]}

Cledassou R. ^{[32
,33
]}

Congedo G. ^{[34
]}

Conselice C.J. ^{[35
]}

Conversi L. ^{[10
,36
]}

Copin Y. ^{[37
]}

Corcione L. ^{[16
]}

Courbin F. ^{[38
]}

Cropper M. ^{[39
]}

Da Silva A. ^{[40
,41
]}

Degaudenzi H. ^{[1
]}

Dinis J. ^{[40
,41
]}

Douspis M. ^{[9
]}

Dupac X. ^{[10
]}

Dusini S. ^{[42
]}

Farrens S. ^{[5
]}

Ferriol S. ^{[37
]}

Fosalba P. ^{[29
,30
]}

Frailis M. ^{[43
]}

Franceschi E. ^{[12
]}

Franzetti P. ^{[24
]}

机构：

[1] Department of Astronomy, University of Geneva, Ch. d'Écogia 16, Versoix

[2] University Observatory, Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, Munich

[3] Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, Garching

[4] Max-Planck-Institut für Astronomie, Königstuhl 17, Heidelberg

[5] Université Paris-Saclay, Université Paris Cité, CEA, Cnrs, Astrophysique, Instrumentation et Modélisation Paris-Saclay, Gif-sur-Yvette

[6] Department of Astronomy & Physics, Institute for Computational Astrophysics, Saint Mary's University, 923 Robie Street, Halifax, B3H 3C3, NS

[7] Aix-Marseille Université, CNRS, CNES, Lam, Marseille

[8] Leiden Observatory, Leiden University, Niels Bohrweg 2, Leiden

[9] Université Paris-Saclay, Cnrs, Institut d'Astrophysique Spatiale, Orsay

[10] ESAC/ESA, Camino Bajo del Castillo, s/n, Urb. Villafranca del Castillo, Villanueva de la Cañada, Madrid

[11] Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth

[12] INAF-Osservatorio di Astrofisica e Scienza Dello Spazio di Bologna, Via Piero Gobetti 93/3, Bologna

[13] Dipartimento di Fisica e Astronomia "Augusto Righi", Alma Mater Studiorum Universitá di Bologna, Via Piero Gobetti 93/2, Bologna

[14] INFN-Sezione di Bologna, Viale Berti Pichat 6/2, Bologna

[15] Universitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität München, Scheinerstrasse 1, München

[16] INAF-Osservatorio Astrofisico di Torino, Via Osservatorio 20, , TO, Pino Torinese

[17] Dipartimento di Fisica, Universitá di Genova, Via Dodecaneso 33, Genova

[18] INFN-Sezione di Roma Tre, Via della Vasca Navale 84, Roma

[19] Department of Physics "E. Pancini", University Federico Ii, Via Cinthia 6, Napoli

[20] INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, Napoli

[21] Instituto de Astrofísica e Ciências Do Espaço, Universidade Do Porto, Caup, Rua das Estrelas, Porto

[22] Dipartimento di Fisica, Universitá Degli Studi di Torino, Via P. Giuria 1, Torino

[23] INFN-Sezione di Torino, Via P. Giuria 1, Torino

[24] INAF-IASF Milano, Via Alfonso Corti 12, Milano

[25] INAF-Osservatorio Astronomico di Roma, Via Frascati 33, Monteporzio Catone

[26] INFN-Sezione di Roma, C/o Dipartimento di Fisica, Edificio G. Marconi, Piazzale Aldo Moro, 2, Roma

[27] Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona

[28] Port d'Informació Científica, Campus UAB, C. Albareda s/n, Bellaterra, Barcelona

[29] Institut d'Estudis Espacials de Catalunya (IEEC), Carrer Gran Capitá 2-4, Barcelona

[30] Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, Barcelona

[31] Infn Section of Naples, Via Cinthia 6, Napoli

[32] Centre National d'Etudes Spatiales, Centre Spatial de Toulouse, 18 avenue Edouard Belin, Toulouse

[33] Institut National de Physique Nucléaire et de Physique des Particules, 3 rue Michel-Ange, Paris

[34] Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh

[35] Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester

[36] European Space Agency/ESRIN, Largo Galileo Galilei 1, , Roma, Frascati

[37] University of Lyon, Univ. Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, Umr 5822, Villeurbanne

[38] Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, Versoix

[39] Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey

[40] Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Edifício C8, Campo Grande, Lisboa

[41] Instituto de Astrofísica e Ciências Do Espaço, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa

[42] INFN-Padova, Via Marzolo 8, Padova

[43] INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, Trieste

[44] Aix-Marseille Université, CNRS/IN2P3, Cppm, Marseille

[45] Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Via Irnerio 46, Bologna

[46] INAF-Osservatorio Astronomico di Padova, Via dell'Osservatorio 5, Padova

[47] Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029 Blindern, Oslo

[48] Technical University of Denmark, Elektrovej 327, Kgs. Lyngby

[49] Institut d'Astrophysique de Paris, 98bis Boulevard Arago, Paris

[50] Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, 91109, CA

来源：

Astronomy and Astrophysics | 2024年 / 681卷

基金：

芬兰科学院; 美国国家航空航天局;

关键词：

Cosmology: observations; Galaxies: distances and redshifts; Surveys; Techniques: miscellaneous; Techniques: photometric;

D O I：

10.1051/0004-6361/202346993

中图分类号：

学科分类号：

摘要：

The technique of photometric redshifts has become essential for the exploitation of multi-band extragalactic surveys. While the requirements on photometric redshifts 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 photometric redshifts 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 suficient 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 eficiently implemented in some photometric-redshift algorithms, in particular template-fitting. We verified that our algorithm, implemented in the new photometric-redshift code Phosphoros, can effectively reduce the bias in photometric redshifts on real data using the CFHTLS T007 survey, with an average measured bias Δz over the redshift range 0:4 ≤ z ≤ 0:7 decreasing by about 0.02, specifically from Δz ≈ 0:04 to Δz ≈ 0:02 around z = 0:5. Our algorithm is also able to produce corrected photometry for other applications. © 2024 EDP Sciences. All rights reserved.

引用

共 75 条

[1]

Abbott T.M.C., Abdalla F.B., Annis J., Et al., MNRAS, 480, (2018)

[2]

Aihara H., Arimoto N., Armstrong R., Et al., PASJ, 70, (2018)

[3]

Almosallam I.A., Jarvis M.J., Roberts S.J., MNRAS, 462, (2016)

[4]

Amara A., Refregier A., MNRAS, 381, (2007)

[5]

Arnouts S., Cristiani S., Moscardini L., Et al., MNRAS, 310, (1999)

[6]

Asgari M., Lin C.-A., Joachimi B., Et al., A&A, 645, (2021)

[7]

Baum W.A., McVittie G.C., Problems of Extra-Galactic Research, 15, (1962)

[8]

Betoule M., Marriner J., Regnault N., Et al., A&A, 552, (2013)

[9]

Blandford R.D., Saust A.B., Brainerd T.G., Villumsen J.V., MNRAS, 251, (1991)

[10]

Bolzonella M., Miralles J.M., Pello R., A&A, 363, (2000)

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