Scientific Rationale

Disks around Class 0/I protostars represent the earliest stages of disk assembly, during which mass and angular momentum are still actively exchanged with the surrounding envelopes. These young disks are crucial for understanding how stars and planets form, as they set the initial conditions for subsequent disk evolution and potential early planet formation. Recent observations have revealed a wide diversity in physical and chemical properties of these embedded disks, including substructures and signs of dust evolution, some of which differ significantly from those seen in more evolved Class II disks. These findings suggest that key processes such as grain growth and planet formation may begin much earlier than previously thought. Establishing the link between these embedded disks and the more evolved Class II stage is therefore essential for building a continuous picture of disk evolution and the emergence of planetary systems. By bringing together new observations, theoretical models, and simulations, this conference aims to explore the physical and chemical processes that shape disks from their youngest phases onward.

The total number of the participants would be at most ~100 to ensure good enough interactions among the participants. Once the number of the registration reaches the maximum, the registration will be closed even before the deadline.

Key topics of the conference include:

• Disk formation and early evolution
• Dust properties and growth
• Disk physical structures and substructures
• Early planetesimal and planet formation
• Magnetic fields and angular momentum transport
• Accretion mechanisms and episodic accretion
• Disk chemistry from embedded to evolved stages

Important dates:

• First announcement: January 15, 2026
• Open registration and abstract submission: March 1, 2026
• Close abstract submission for contribution talks: May 31, 2026
• Announcement of the accepted contribution talks: June 30, 2026
• Visa application deadline: July 15, 2026
• Close abstract submission for poster presentation: August 31, 2026
• Final Announcement of program: October 1, 2026
• Close registration: October 15, 2026
• Conference: November 9-13, 2026

Contact Information

• For inquiries regarding the scientific rationale and agenda, please contact
  d2p2026_socasiaa.sinica.edu.tw
• For inquiries regarding logistics, please contact
  d2p2026_locasiaa.sinica.edu.tw
• For requests related to visa applications or invitation letters, please contact
  d2p2026_visaasiaa.sinica.edu.tw

Registration Fee: TBD