Presentation

Substellar Science with the Euclid Space Mission (SUBSTELLAR) is a project aimed at mining the Euclid surveys for pushing the frontier of knowledge in substellar science.

SUBSTELLAR is an Advanced Grant awarded to Prof. Eduardo L. Martín (Instituto de Astrofísica de Canarias) by the European Research Council. 

The primary science goal of SUBSTELLAR is to reveal and investigate the faint objects that lurk in the darkness beyond the limits of stellar engines, using mainly the new data arriving from the ESA Euclid space mission.

Euclid is a space mission led by the European Space Agency (ESA) to conduct a deep, single-epoch survey of 15,000 deg2 of sky with visible and near-infrared photometry and spectroscopy, and 40 deg2 multi-epoch very deep surveys. Euclid was launched at July 1st 2023.

The unprecedented combination of sensitivity, areal coverage, spatial resolution, data homogeneity and spectral information will naturally be of tremendous benefit to other areas of astrophysics. Two Euclid Independent Legacy Science (ILS) programs have been designated by ESA to develop and pursue independent science programs that capitalize on the unique data products of the Euclid surveys.SUBSTELLAR will re-use existing ground-based and space-based multiwavelength data to complement the new data obtained with the Euclid space mission.  

 

LATEST NEWS

Mar 24 2025, 08:56

56th ESLAB Symposium & Euclid Consortium Meeting, Leiden, The Netherlands

ESLAB Symposium: 24-26 March 2025 (open to the scientific community)

Euclid Consortium Meeting: 25-27 March 2025 (for Euclid Consortium members only)

The next 56th ESLAB Symposium 2025 will take place on 24-26 March 2025 in Leiden, jointly to the annual Euclid Consortium meeting taking place in parallel during that week. 

ESLAB is an international conference open to the scientific community. The Euclid Consortium meeting is restricted to Euclid Consortium members. 

The SUBSTELLAR project has been invited to participate in both, the conference and the meeting.

ESLAB aims at bringing together the Euclid Consortium community and the scientific community to explore new ideas of how to use Euclid data. It will present first scientific results related to the Euclid data release and also host talks by the community at large, interested in Euclid science. 

Euclid ESLAB 2025 will introduce Euclid science, also in relation with other experiments. A special session will be devoted to the description of the Q1  Euclid data release , and includes a preview of the deep field areas.

ESLAB 2025 Programme is available here

Mar 19 2025, 11:54

The IAC contributes to a more accurate mapping of the universe through Euclid satellite data

IAC in EuclidThe Euclid Consortium (EC) is today releasing exclusive scientific papers and data based on observations made by the Euclid Space Telescope. The scientific results include the discovery of strong gravitational lensing systems, the exploration of galaxy clusters and the cosmic web, the characterization of active galactic nuclei (AGN) and quasars, studies of galaxy evolution and morphology, the identification of numerous dwarf galaxies and transient events, and the discovery of new substellar objects.

Spain plays an important role in the Euclid mission, participating in the development of the astrophysical instruments and contributing significantly to their scientific exploitation. The Instituto de Astrofísica de Canarias (IAC) is leading several of the 27 scientific publications, along with 7 technical papers, published today on arXiv.

According to Prof. Eduardo Martín, IAC Research Professor, Principal Investigator of the SUBSTELLAR project and one of the two Independent Legacy Scientists of the Euclid mission: "The Euclid Q1 data have provided us with deep, wide-field images in which we have been able to identify more than 5000 objects whose peculiar colors match those expected for ultracold objects that could have substellar masses and contribute to the Milky Way's dark matter; several dozen of these objects also have spectra that confirm their substellar nature. Two postdoctoral researchers on the project, Carlos Dominguez Tagle and Marusa Zerjal, are leading the early substellar science work with the Q1 data."

More details at IAC contribution to the Euclid mission

Mar 19 2025, 11:21

ESA’s Euclid Mission released its first batch of survey data

Today, 19 March 2025, the European Space Agency’s Euclid mission released its first batch of survey data, including a preview of its deep fields. Here, hundreds of thousands of galaxies in different shapes and sizes take centre stage and show a glimpse of their large-scale organisation in the cosmic web.

The European Space Agency’s  Euclid  mission has scouted out the  three areas in the sky  where it will eventually provide the deepest observations of its mission:.

In just one week of observations, with one scan of each region so far, Euclid already spotted 26 million galaxies. The farthest of those are up to 10.5 billion light-years away.

In the coming years, Euclid will pass over these three regions tens of times, capturing many more faraway galaxies, making these fields truly ‘deep’ by the end of the nominal mission in 2030. 

The first glimpse of 63 square degrees of the sky, the equivalent area of more than 300 times the full Moon, already gives an impressive preview of the scale of Euclid’s grand cosmic atlas when the mission is complete. This atlas will cover one-third of the entire sky – 14 000 square degrees – in this high-quality detail.

More details and ESA released video at  Euclid is back – 26 million galaxies and counting

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