Description
Organisers: Stephen Eales, Alex Hall, Mathilde Jauzac, Christopher Lovell, James Nightingale, Francesco Shankar
Euclid launched on July 1st 2023, and is the European Space Agencyโs flagship dark energy mission, mapping the large scale structure of the Universe. Although primarily a cosmology mission, Euclid is expected to be a transformative survey for many different areas of astronomy, including exoplanets, galaxy evolution, and transients. The UK has made significant investments in Euclid, and there is now a large community of researchers either working in the Euclid Consortium or planning to make use of Euclid data.
After the release of the first images, the next outstanding milestone for Euclid will be the first public data release (Q1) around March 2025. The Euclid consortium is now actively working on producing a number of papers that reflect the rich variety of science that can be derived from Euclid data.
This NAM session is dedicated to showcasing how UK researchers are using Euclid data for world leading science, and synergies with other key surveys. The session will also include review talks on the key science areas of Euclid (weak lensing, galaxy clustering, and legacy science), as well as a number of contributed talks from Euclid consortium members and external users. Finally, it will also be an opportunity to look forward to data release 1 (DR1) in 2026, and the exciting science enabled by this next batch of Euclid data.
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11/07/2025, 09:00Euclid science exploitation in the UKTalk
In this talk, I will explore the promising synergy between WEAVE/StePS and Euclid for studying dust attenuation in the COSMOS field. The well-constrained ratios of intrinsic hydrogen emission lines provide a robust method for measuring wavelength-dependent dust attenuation, which is crucial for accurate flux corrections and reducing biases in the estimation of physical parameters of galaxies...
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Giuseppe Congedo (Institute for Astronomy, University of Edinburgh)11/07/2025, 09:11Euclid science exploitation in the UKTalk
We are now well into science operations with Euclid and are preparing for internal DR1 expected late this year. In order to measure cosmological parameters with 1% precision via the weak lensing by the large scale structure, we need to measure the 1% coherent distortion of galaxy images, cosmic shear, over 2,500 sq. deg. for DR1 with exquisite accuracy. However, we also have to control the...
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Sotiria Fotopoulou11/07/2025, 09:22Euclid science exploitation in the UKTalk
The first public data release of Euclid provides a glimpse into the superb capabilities of its instruments across all of astrophysics. In this talk, I will present the first catalogue of candidate active galactic nuclei (AGN) in the Q1 fields across 63 sq. deg. We created a multi-wavelength catalog combining GALEX, GAIA, DES, WISE, Spitzer, and DESI data. We find a total of 229,779 AGN...
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11/07/2025, 09:33Euclid science exploitation in the UKTalk
ESAโs Euclid satellite offers an exceptional combination of high spatial resolution, wide field-of-view, and a stable point spread function (PSF), making it ideal for exploring the Low Surface Brightness (LSB) Universe. The Early Release Observations (EROs) offered remarkable insights into LSB structures, while the Quick Release 1 (Q1) data, spanning 60 square degrees, provides unprecedented...
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Rohan Varadaraj (University of Oxford)11/07/2025, 09:44Euclid science exploitation in the UKTalk
We present a search for $z\simeq7$ Lyman-break galaxies in the COSMOS field using the $1.72 \ \rm{deg}^2$ near-infrared UltraVISTA survey. We incorporate deep optical and Spitzer imaging for a full spectral energy distribution (SED) fitting analysis. We find 291 candidate galaxies at $6.5\leq z \leq 7.5$ covering $-22.6 \leq M_{\rm{UV}} \leq -20.2$, faint enough to overlap with Hubble...
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Natalie Lines (University of Portsmouth)11/07/2025, 09:55Euclid science exploitation in the UKTalk
Euclidโs space-based resolution over a third of the sky makes it the perfect tool for finding strong gravitational lenses, being expected to increase the total number by two orders of magnitude. To find strong lenses in the Euclid Q1 data, I repurposed the Zoobot machine learning model that was pretrained on GalaxyZoo morphologies. In combination with 4 other machine learning networks, we...
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11/07/2025, 10:06Euclid science exploitation in the UKTalk
At the end of 2023, an X-ray XMM Heritage programme of 3.6 Ms was allocated to perform a deep uniform survey of the 10 deg^2 Euclid Deep Field Fornax. More than 500 low-mass X-ray clusters will be detected out to a redshift of 2. We present the progress of this ongoing XMM campaign and plans for the Euclid DR1 release. The exceptional multi-wavelength data set to be obtained on this field...
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11/07/2025, 10:17Euclid science exploitation in the UKTalk
Ultracool Dwarfs (UCDs) are faint, low luminosity objects that span the stellar-substellar boundary, encompassing the lowest-mass stars and brown dwarfs. The Euclid mission will uncover many hundreds of UCDs thanks to its wide coverage and deep sensitivity. To most completely characterize a Euclid UCD the wide wavelength coverage of the Euclid optical and near-infrared photometry should be...
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