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Euclid preparation. XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields

Moneti, A. and McCracken, H. J. and Shuntov, M. and Kauffmann, O. B. and Capak, P. and Davidzon, I. and Ilbert, O. and Scarlata, C. and Toft, S. and Weaver, J. and Chary, R. and Cuby, J. and Faisst, A. L. and Masters, D. C. and McPartland, C. and Mobasher, B. and Sanders, D. B. and Scaramella, R. and Stern, D. and Szapudi, I. and Teplitz, H. and Zalesky, L. and Amara, A. and Auricchio, N. and Bodendorf, C. and Bonino, D. and Branchini, E. and Brau-Nogue, S. and Brescia, M. and Brinchmann, J. and Capobianco, V. and Carbone, C. and Carretero, J. and Castander, F. J. and Castellano, M. and Cavuoti, S. and Cimatti, A. and Cledassou, R. and Congedo, G. and Conselice, C. J. and Conversi, L. and Copin, Y. and Corcione, L. and Costille, A. and Cropper, M. and Da Silva, A. and Degaudenzi, H. and Douspis, M. and Dubath, F. and Duncan, C. A. J. and Dupac, X. and Dusini, S. and Farrens, S. and Ferriol, S. and Fosalba, P. and Frailis, M. and Franceschi, E. and Fumana, M. and Garilli, B. and Gillis, B. and Giocoli, C. and Granett, B. R. and Grazian, A. and Grupp, F. and Haugan, S. V. H. and Hoekstra, H. and Holmes, W. and Hormuth, F. and Hudelot, P. and Jahnke, K. and Kermiche, S. and Kiessling, A. and Kilbinger, M. and Kitching, T. and Kohley, R. and Kümmel, M. and Kunz, M. and Kurki-Suonio, H. and Ligori, S. and Lilje, P. B. and Lloro, I. and Maiorano, E. and Mansutti, O. and Marggraf, O. and Markovic, K. and Marulli, F. and Massey, R. and Maurogordato, S. and Meneghetti, M. and Merlin, E. and Meylan, G. and Moresco, M. and Moscardini, L. and Munari, E. and Niemi, S. M. and Padilla, C. and Paltani, S. and Pasian, F. and Pedersen, K. and Pires, S. and Poncet, M. and Popa, L. and Pozzetti, L. and Raison, F. and Rebolo, R. and Rhodes, J. and Rix, H. and Roncarelli, M. and Rossetti, E. and Saglia, R. and Schneider, P. and Secroun, A. and Seidel, G. and Serrano, S. and Sirignano, C. and Sirri, G. and Stanco, L. and Tallada-Crespí, P. and Taylor, A. N. and Tereno, I. and Toledo-Moreo, R. and Torradeflot, F. and Wang, Y. and Welikala, N. and Weller, J. and Zamorani, G. and Zoubian, J. and Andreon, S. and Bardelli, S. and Camera, S. and Graciá-Carpio, J. and Medinaceli, E. and Mei, S. and Polenta, G. and Romelli, E. and Sureau, F. and Tenti, M. and Vassallo, T. and Zacchei, A. and Zucca, E. and Baccigalupi, C. and Balaguera-Antolínez, A. and Bernardeau, F. and Biviano, A. and Bolzonella, M. and Bozzo, E. and Burigana, C. and Cabanac, R. and Cappi, A. and Carvalho, C. S. and Casas, S. and Castignani, G. and Colodro-Conde, C. and Coupon, J. and Courtois, H. M. and Di Ferdinando, D. and Farina, M. and Finelli, F. and Flose-Reimberg, P. and Fotopoulou, S. and Galeotta, S. and Ganga, K. and García-Bellido, J. and Gaztanaga, E. and Gozaliasl, G. and Hook, I. and Joachimi, B. and Kansal, V. and Keihanen, E. and Kirkpatrick, C. C. and Lindholm, V. and Mainetti, G. and Maino, D. and Maoli, R. and Martinelli, M. and Martinet, N. and Maturi, M. and Metcalf, R. B. and Morgante, G. and Morisset, N. and Nucita, A. and Patrizii, L. and Potter, D. and Renzini, A. and Riccio, G. and Sánchez, A. G. and Sapone, D. and Schirmer, M. and Schultheis, M. and Scottez, V. and Sefusatti, E. and Teyssier, R. and Tubio, O. and Tutusaus, I. and Valiviita, J. and Viel, M. and Hildebrandt, H. (2022) Euclid preparation. XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields. Astronomy and Astrophysics, 658 . Art. No. A126. ISSN 0004-6361. doi:10.1051/0004-6361/202142361.

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We present a new infrared survey covering the three Euclid deep fields and four other Euclid calibration fields using Spitzer Space Telescope’s Infrared Array Camera (IRAC). We combined these new observations with all relevant IRAC archival data of these fields in order to produce the deepest possible mosaics of these regions. In total, these observations represent nearly 11 % of the total Spitzer Space Telescope mission time. The resulting mosaics cover a total of approximately 71.5 deg² in the 3.6 and 4.5 μm bands, and approximately 21.8 deg² in the 5.8 and 8 μm bands. They reach at least 24 AB magnitude (measured to 5σ, in a 2″​​.5 aperture) in the 3.6 μm band and up to ∼5 mag deeper in the deepest regions. The astrometry is tied to the Gaia astrometric reference system, and the typical astrometric uncertainty for sources with 16 Spitzer Space Telescope has now been decommissioned, these mosaics are likely to be the definitive reduction of these IRAC data. This survey therefore represents an essential first step in assembling multi-wavelength data on the Euclid deep fields, which are set to become some of the premier fields for extragalactic astronomy in the 2020s.

Item Type:Article
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URLURL TypeDescription ItemEuropean Space Agency (ESA) mission Gaia ItemGaia Data Processing and Analysis Consortium ItemEuclid Consortium
McCracken, H. J.0000-0002-9489-7765
Shuntov, M.0000-0002-7087-0701
Kauffmann, O. B.0000-0001-5283-4662
Capak, P.0000-0003-3578-6843
Davidzon, I.0000-0002-2951-7519
Ilbert, O.0000-0002-7303-4397
Scarlata, C.0000-0002-9136-8876
Toft, S.0000-0003-3631-7176
Weaver, J.0000-0003-1614-196X
Chary, R.0000-0001-7583-0621
Cuby, J.0000-0002-8767-1442
Faisst, A. L.0000-0002-9382-9832
Masters, D. C.0000-0001-5382-6138
McPartland, C.0000-0003-0639-025X
Sanders, D. B.0000-0002-1233-9998
Scaramella, R.0000-0003-2229-193X
Stern, D.0000-0003-2686-9241
Teplitz, H.0000-0002-7064-5424
Auricchio, N.0000-0003-4444-8651
Bonino, D.0000-0002-3336-9977
Branchini, E.0000-0002-0808-6908
Brescia, M.0000-0001-9506-5680
Brinchmann, J.0000-0003-4359-8797
Capobianco, V.0000-0002-3309-7692
Carretero, J.0000-0002-3130-0204
Castander, F. J.0000-0001-7316-4573
Castellano, M.0000-0001-9875-8263
Cavuoti, S.0000-0002-3787-4196
Cimatti, A.0000-0002-4409-5633
Cledassou, R.0000-0002-8313-2230
Congedo, G.0000-0003-2508-0046
Conselice, C. J.0000-0003-1949-7638
Conversi, L.0000-0002-6710-8476
Copin, Y.0000-0002-5317-7518
Corcione, L.0000-0002-6497-5881
Cropper, M.0000-0003-4571-9468
Dusini, S.0000-0002-1128-0664
Farrens, S.0000-0002-9594-9387
Fosalba, P.0000-0002-1510-5214
Frailis, M.0000-0002-7400-2135
Franceschi, E.0000-0002-0585-6591
Garilli, B.0000-0001-7455-8750
Gillis, B.0000-0002-4478-1270
Giocoli, C.0000-0002-9590-7961
Hoekstra, H.0000-0002-0641-3231
Jahnke, K.0000-0003-3804-2137
Kermiche, S.0000-0002-0302-5735
Kilbinger, M.0000-0001-9513-7138
Kitching, T.0000-0002-4061-4598
Kunz, M.0000-0003-1676-6126
Kurki-Suonio, H.0000-0002-4618-3063
Ligori, S.0000-0003-4172-4606
Lloro, I.0000-0001-5966-1434
Maiorano, E.0000-0003-2593-4355
Mansutti, O.0000-0001-5758-4658
Marggraf, O.0000-0001-7242-3852
Marulli, F.0000-0002-8850-0303
Massey, R.0000-0002-6085-3780
Meneghetti, M.0000-0003-1225-7084
Merlin, E.0000-0001-6870-8900
Moresco, M.0000-0002-7616-7136
Moscardini, L.0000-0002-3473-6716
Padilla, C.0000-0001-7951-0166
Paltani, S.0000-0002-8108-9179
Pires, S.0000-0002-0249-2104
Pozzetti, L.0000-0001-7085-0412
Rebolo, R.0000-0003-3767-7085
Rhodes, J.0000-0002-4485-8549
Rix, H.0000-0003-4996-9069
Roncarelli, M.0000-0001-9587-7822
Saglia, R.0000-0003-0378-7032
Schneider, P.0000-0002-5094-2245
Secroun, A.0000-0003-0505-3710
Tereno, I.0000-0002-4537-6218
Toledo-Moreo, R.0000-0002-2997-4859
Wang, Y.0000-0002-4749-2984
Weller, J.0000-0002-8282-2010
Zamorani, G.0000-0002-2318-301X
Andreon, S.0000-0002-2041-8784
Bardelli, S.0000-0002-8900-0298
Camera, S.0000-0003-3399-3574
Graciá-Carpio, J.0000-0003-4689-3134
Medinaceli, E.0000-0002-4040-7783
Mei, S.0000-0002-2849-559X
Polenta, G.0000-0003-4067-9196
Romelli, E.0000-0003-3069-9222
Tenti, M.0000-0002-4254-5901
Zacchei, A.0000-0003-0396-1192
Zucca, E.0000-0002-5845-8132
Baccigalupi, C.0000-0002-8211-1630
Balaguera-Antolínez, A.0000-0001-5028-3035
Biviano, A.0000-0002-0857-0732
Bozzo, E.0000-0002-7504-7423
Burigana, C.0000-0002-3005-5796
Cabanac, R.0000-0001-6679-2600
Cappi, A.0000-0002-9200-7167
Castignani, G.0000-0001-6831-0687
Courtois, H. M.0000-0003-0509-1776
Finelli, F.0000-0002-6694-3269
Fotopoulou, S.0000-0002-9686-254X
Galeotta, S.0000-0002-3748-5115
García-Bellido, J.0000-0002-9370-8360
Gaztanaga, E.0000-0001-9632-0815
Gozaliasl, G.0000-0002-0236-919X
Hook, I.0000-0002-2960-978X
Keihanen, E.0000-0003-1804-7715
Maino, D.0000-0002-4761-1242
Martinet, N.0000-0003-2786-7790
Nucita, A.0000-0002-7926-3481
Patrizii, L.0000-0002-9712-977X
Renzini, A.0000-0002-7093-7355
Riccio, G.0000-0001-7020-1172
Sánchez, A. G.0000-0003-1198-831X
Sapone, D.0000-0001-7089-4503
Schirmer, M.0000-0003-2568-9994
Schultheis, M.0000-0002-6590-1657
Teyssier, R.0000-0001-7689-0933
Tutusaus, I.0000-0002-3199-0399
Valiviita, J.0000-0001-6225-3693
Viel, M.0000-0002-2642-5707
Additional Information:© Euclid Collaboration 2022. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Received: 4 October 2021 Accepted: 21 November 2021. We thank the MOPEX support team for fixing issues that appeared when combining large numbers of files. This publication is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA, and has made use of the NASA/IPAC Infrared Science Archive, which is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology. This publication has also made use of data from the European Space Agency (ESA) mission Gaia (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the Gaia Data Processing and Analysis Consortium (DPAC) has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This publication makes use of data products from the Wide-field Infrared Survey Explorer (WISE), which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. H.J.McC. acknowledges support from the PNCG. This work used the CANDIDE computer system at the IAP supported by grants from the PNCG and the DIM-ACAV and maintained by S. Rouberol. S.T. and J.W. acknowledge support from the European Research Council (ERC) Consolidator Grant funding scheme (project ConTExt, grant No. 648179). I.D. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 896225. The Cosmic Dawn Center is funded by the Danish National Research Foundation under grant No. 140. H. Hildebrandt is supported by a Heisenberg grant of the Deutsche Forschungsgemeinschaft (Hi 1495/5-1) as well as an ERC Consolidator Grant (No. 770935). The Euclid Consortium acknowledges the European Space Agency and a number of agencies and institutes that have supported the development of Euclid, in particular the Academy of Finland, the Agenzia Spaziale Italiana, the Belgian Science Policy, the Canadian Euclid Consortium, the French Centre National d’Etudes Spatiales, the Deutsches Zentrum fúr Luft-und Raumfahrt, the Danish Space Research Institute, the Fundação para a Ciência e a Tecnologia, the Ministerio de Ciencia e Innovación, the National Aeronautics and Space Administration, the National Astronomical Observatory of Japan, the Netherlandse Onderzoekschool Voor Astronomie, the Norwegian Space Agency, the Romanian Space Agency, the State Secretariat for Education, Research and Innovation (SERI) at the Swiss Space Office (SSO), and the United Kingdom Space Agency. A complete and detailed list is available on the Euclid web site (
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Gaia Multilateral AgreementUNSPECIFIED
Programme National Galaxies et Cosmologie (PNCG)UNSPECIFIED
European Research Council (ERC)648179
Marie Curie Fellowship896225
Danish National Research Foundation140
Deutsche Forschungsgemeinschaft (DFG)Hi 1495/5-1
European Research Council (ERC)770935
European Space Agency (ESA)UNSPECIFIED
Academy of FinlandUNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Belgian Federal Science Policy Office (BELSPO)UNSPECIFIED
Canadian Euclid ConsortiumUNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Deutsches Zentrum für Luft- und Raumfahrt (DLR)UNSPECIFIED
Danish Space Research InstituteUNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
Ministerio de Economía y Competitividad (MINECO)UNSPECIFIED
National Astronomical Observatory of JapanUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Norwegian Space AgencyUNSPECIFIED
Romanian Space AgencyUNSPECIFIED
State Secretariat for Education, Research and Innovation (SERI)UNSPECIFIED
Swiss Space Office (SSO)UNSPECIFIED
United Kingdom Space Agency (UKSA)UNSPECIFIED
Subject Keywords:cosmology: observations / large-scale structure of Universe / dark energy / dark matter / Galaxy: formation / surveys
Record Number:CaltechAUTHORS:20220310-752642000
Persistent URL:
Official Citation:Euclid preparation - XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields Euclid Collaboration, A. Moneti, H. J. McCracken, M. Shuntov, O. B. Kauffmann, P. Capak, I. Davidzon, O. Ilbert, C. Scarlata, S. Toft, J. Weaver, R. Chary, J. Cuby, A.L. Faisst, D. C. Masters, C. McPartland, B. Mobasher, D. B. Sanders, R. Scaramella, D. Stern, I. Szapudi, H. Teplitz, L. Zalesky, A. Amara, N. Auricchio, C. Bodendorf, D. Bonino, E. Branchini, S. Brau-Nogue, M. Brescia, J. Brinchmann, V. Capobianco, C. Carbone, J. Carretero, F. J. Castander, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, L. Corcione, A. Costille, M. Cropper, A. Da Silva, H. Degaudenzi, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, M. Fumana, B. Garilli, B. Gillis, C. Giocoli, B. R. Granett, A. Grazian, F. Grupp, S. V. H. Haugan, H. Hoekstra, W. Holmes, F. Hormuth, P. Hudelot, K. Jahnke, S. Kermiche, A. Kiessling, M. Kilbinger, T. Kitching, R. Kohley, M. Kümmel, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, I. Lloro, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, S. Maurogordato, M. Meneghetti, E. Merlin, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, S. Pires, M. Poncet, L. Popa, L. Pozzetti, F. Raison, R. Rebolo, J. Rhodes, H. Rix, M. Roncarelli, E. Rossetti, R. Saglia, P. Schneider, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, P. Tallada-Crespí, A. N. Taylor, I. Tereno, R. Toledo-Moreo, F. Torradeflot, Y. Wang, N. Welikala, J. Weller, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, S. Camera, J. Graciá-Carpio, E. Medinaceli, S. Mei, G. Polenta, E. Romelli, F. Sureau, M. Tenti, T. Vassallo, A. Zacchei, E. Zucca, C. Baccigalupi, A. Balaguera-Antolínez, F. Bernardeau, A. Biviano, M. Bolzonella, E. Bozzo, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, C. Colodro-Conde, J. Coupon, H. M. Courtois, D. Di Ferdinando, M. Farina, F. Finelli, P. Flose-Reimberg, S. Fotopoulou, S. Galeotta, K. Ganga, J. Garcia-Bellido, E. Gaztanaga, G. Gozaliasl, I. Hook, B. Joachimi, V. Kansal, E. Keihanen, C. C. Kirkpatrick, V. Lindholm, G. Mainetti, D. Maino, R. Maoli, M. Martinelli, N. Martinet, M. Maturi, R. B. Metcalf, G. Morgante, N. Morisset, A. Nucita, L. Patrizii, D. Potter, A. Renzi, G. Riccio, A. G. Sánchez, D. Sapone, M. Schirmer, M. Schultheis, V. Scottez, E. Sefusatti, R. Teyssier, O. Tubio, I. Tutusaus, J. Valiviita, M. Viel and H. Hildebrandt A&A, 658 (2022) A126 DOI:
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ID Code:113890
Deposited By: George Porter
Deposited On:14 Mar 2022 16:35
Last Modified:14 Mar 2022 16:35

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