Show simple item record

dc.contributor.authorEuclid Collaboration
dc.date.accessioned2022-04-13T12:55:09Z
dc.date.available2022-04-13T12:55:09Z
dc.date.issued2022
dc.identifier.citationEuclid Collaboration. (2022). Euclid preparation : XVII. Cosmic Dawn Survey : Spitzer Space Telescope observations of the Euclid deep fields and calibration fields. <i>Astronomy and Astrophysics</i>, <i>658</i>, Article A126. <a href="https://doi.org/10.1051/0004-6361/202142361" target="_blank">https://doi.org/10.1051/0004-6361/202142361</a>
dc.identifier.otherCONVID_117777255
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/80586
dc.description.abstractWe 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.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherEDP Sciences
dc.relation.ispartofseriesAstronomy and Astrophysics
dc.rightsCC BY 4.0
dc.subject.othercosmology: observations
dc.subject.otherlarge-scale structure of Universe
dc.subject.otherdark energy
dc.subject.otherdark matter
dc.subject.otherGalaxy: formation
dc.subject.othersurveys
dc.titleEuclid preparation : XVII. Cosmic Dawn Survey : Spitzer Space Telescope observations of the Euclid deep fields and calibration fields
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202204132266
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.relation.issn0004-6361
dc.relation.volume658
dc.type.versionpublishedVersion
dc.rights.copyright© Euclid Collaboration 2022
dc.rights.accesslevelopenAccessfi
dc.subject.ysopimeä energia
dc.subject.ysokosmologia
dc.subject.ysogalaksijoukot
dc.subject.ysopimeä aine
dc.subject.ysogalaksit
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p1309
jyx.subject.urihttp://www.yso.fi/onto/yso/p7160
jyx.subject.urihttp://www.yso.fi/onto/yso/p38892
jyx.subject.urihttp://www.yso.fi/onto/yso/p14101
jyx.subject.urihttp://www.yso.fi/onto/yso/p1324
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1051/0004-6361/202142361


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

CC BY 4.0
Except where otherwise noted, this item's license is described as CC BY 4.0