Starting with the Euclid Early Observations program and continuing with the Quick data release 1 and moving into the Data Release 1, our Independent Legacy Science team is focusing on the study of ultracool dwarfs in nearby star-forming regions, young open clusters and the field. Our first results showcase the power of Euclid to detect rogue planets directly via high spatial resolution...
Primarily designed to explore the dark universe, the Euclid space telescope also opens exciting new opportunities for substellar science. Its Early Release Observations and Quick Data Release include several young star-forming regions in Orion. In this talk, I will present results from Messier 78 (M78) and Lynds 1641 (LDN1641). The M78 data are representative of the Euclid Wide Survey, which...
Euclid’s capabilities to study ultracool dwarfs (UCDs), including brown dwarfs and free-floating planetary-mass objects, have already been demonstrated by its Early Release Observations. UCD candidates have been uncovered down to ~4 MJup in the σ Orionis cluster, a young (~3 Myr) and nearby (~400 pc) star-forming region. The first search in this field was focused on low-reddening areas, while...
Because it does not require the flux measurement of the lens, the microlensing technic is sensitive to a wide rage of dark range, from stellar mass black hole to the free-floating regime. Starting in 2027, it is expected that the Roman mission will detect thousands of free-floating planets. This will allow a first estimate of the population of these objects in the Milky Way. However, several...
The Euclid Galactic Bulge Survey (EGBS), conducted in late March 2025, will play a crucial role in maximizing the number of precise mass and distance measurements for Roman microlensing events. These observations can also be used to constrain the physical parameters of any microlensing event occurring within the survey fields.
An open question remains: can these data help us distinguish...
