Rogue Worlds Strike Back, Episode 2

Session

Direct Imaging

Dec 15, 2025, 9:30 AM

Amphitheater Henri Mineur (Institut d'Astrophysique de Paris)

Conveners

Direct Imaging

• Jane Greaves (Cardiff University)
• Nuria Huélamo (Centro de Astrobiología (CSIC-INTA))
• Nicolas Lodieu (IAC Tenerife)

46. Direct imaging of free-floating planets (Invited)

Núria Miret Roig (University of Bordeaux)

12/15/25, 9:30 AM

In-person

Invited talk

Direct imaging has revolutionized our view of the substellar population, revealing a growing population of free-floating planets. I will review the first discoveries, the current observational picture, and the prospects opened by upcoming instruments. I will describe the strategies used to identify free-floating planets, combining deep imaging, proper motions, and spectroscopy. Finally, I...

25. Can large protoplanetary discs produce rogue worlds?

Prof. Jane Greaves (Cardiff University)

12/15/25, 10:00 AM

In-person

Contributed talk

The origins of massive planets seen by direct imaging are uncertain, but these worlds far from their host stars are likely the most vulnerable to ejection in stellar encounters. We have just completed the Planet-Earth Building-Blocks Legacy e-MERLIN Survey (PEBBLeS), which gives the first view of the distribution of small rocks (planetary seeds) in the midplane of massive discs of young stars....

42. The formation of free-floating planets: lessons from proto-brown dwarf studies in nearby clouds

Nuria Huélamo (Centro de Astrobiología (CSIC-INTA))

12/15/25, 10:20 AM

In-person

Contributed talk

In a recent review paper, we have studied the pre- and proto-brown dwarf (proto-BD) population in different nearby clouds down to the planetary boundary (Palau+2024). Among our findings, we confirm that massive proto-BDs seem to follow the same trends as protostars in different star forming regions. On the other hand, we report an underproduction of low-mass proto-BD candidates in Ophiuchus...