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

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https://doi.org/10.1051/0004-6361/202142361
Final published version
Available under license: CC BY: Creative Commons Attribution 4.0 International License

Keywords

cosmology: observations, large-scale structure of Universe, dark energy, dark matter, Galaxy: formation, surveys

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Euclid preparation. XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields. / Euclid Collaboration.
In: Astronomy & Astrophysics, Vol. 658, A126, 01.02.2022.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{8333b297f41349cdb760432a1252d4e8,

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

abstract = "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 < [3.6]<19 is ≲0″.15. The photometric calibration is in excellent agreement with previous WISE measurements. We extracted source number counts from the 3.6 μm band mosaics, and they are in excellent agreement with previous measurements. Given that the 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.",

keywords = "cosmology: observations, large-scale structure of Universe, dark energy, dark matter, Galaxy: formation, surveys",

author = "{Euclid Collaboration} and {Euclid Collaboration} and A. Moneti and McCracken, {H. J.} and M. Shuntov and Kauffmann, {O. B.} and P. Capak and I. Davidzon and O. Ilbert and C. Scarlata and S. Toft and J. Weaver and R. Chary and J. Cuby and Faisst, {A. L.} and Masters, {D. C.} and C. McPartland and B. Mobasher and Sanders, {D. B.} and R. Scaramella and D. Stern and I. Szapudi and H. Teplitz and L. Zalesky and A. Amara and N. Auricchio and C. Bodendorf and D. Bonino and E. Branchini and S. Brau-Nogue and M. Brescia and J. Brinchmann and V. Capobianco and C. Carbone and J. Carretero and Castander, {F. J.} and M. Castellano and S. Cavuoti and A. Cimatti and R. Cledassou and G. Congedo and Conselice, {C. J.} and L. Conversi and Y. Copin and L. Corcione and A. Costille and M. Cropper and {Da Silva}, A. and H. Degaudenzi and M. Douspis and I. Hook",

year = "2022",

month = feb,

day = "1",

doi = "10.1051/0004-6361/202142361",

language = "English",

volume = "658",

journal = "Astronomy & Astrophysics",

issn = "1432-0746",

publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - Euclid preparation. XVII. Cosmic Dawn Survey: Spitzer Space Telescope observations of the Euclid deep fields and calibration fields

AU - Euclid Collaboration

AU - Euclid Collaboration, null

AU - Moneti, A.

AU - McCracken, H. J.

AU - Shuntov, M.

AU - Kauffmann, O. B.

AU - Capak, P.

AU - Davidzon, I.

AU - Ilbert, O.

AU - Scarlata, C.

AU - Toft, S.

AU - Weaver, J.

AU - Chary, R.

AU - Cuby, J.

AU - Faisst, A. L.

AU - Masters, D. C.

AU - McPartland, C.

AU - Mobasher, B.

AU - Sanders, D. B.

AU - Scaramella, R.

AU - Stern, D.

AU - Szapudi, I.

AU - Teplitz, H.

AU - Zalesky, L.

AU - Amara, A.

AU - Auricchio, N.

AU - Bodendorf, C.

AU - Bonino, D.

AU - Branchini, E.

AU - Brau-Nogue, S.

AU - Brescia, M.

AU - Brinchmann, J.

AU - Capobianco, V.

AU - Carbone, C.

AU - Carretero, J.

AU - Castander, F. J.

AU - Castellano, M.

AU - Cavuoti, S.

AU - Cimatti, A.

AU - Cledassou, R.

AU - Congedo, G.

AU - Conselice, C. J.

AU - Conversi, L.

AU - Copin, Y.

AU - Corcione, L.

AU - Costille, A.

AU - Cropper, M.

AU - Da Silva, A.

AU - Degaudenzi, H.

AU - Douspis, M.

AU - Hook, I.

PY - 2022/2/1

Y1 - 2022/2/1

N2 - 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 < [3.6]<19 is ≲0″.15. The photometric calibration is in excellent agreement with previous WISE measurements. We extracted source number counts from the 3.6 μm band mosaics, and they are in excellent agreement with previous measurements. Given that the 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.

AB - 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 < [3.6]<19 is ≲0″.15. The photometric calibration is in excellent agreement with previous WISE measurements. We extracted source number counts from the 3.6 μm band mosaics, and they are in excellent agreement with previous measurements. Given that the 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.

KW - cosmology: observations

KW - large-scale structure of Universe

KW - dark energy

KW - dark matter

KW - Galaxy: formation

KW - surveys

U2 - 10.1051/0004-6361/202142361

DO - 10.1051/0004-6361/202142361

M3 - Journal article

VL - 658

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 1432-0746

M1 - A126

ER -

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