Cool Stars 23

15 – 19 June 2026, TOC Ariake, Tokyo Bay Area, Japan

The "Cambridge Workshops on Cool Stars, Stellar Systems and the Sun" are held biennially and have evolved to be the premier conference series for cool star research.

Register for conference

Registration is now open. Registration fees are listed below. You can register via the conference registration portal.

• Early-bird registration: JPY 50,000 for students and JPY 70,000 for others (ends April 9, 24:00 UTC)
• Normal registration: JPY 80,000 (ends May 7, 24:00 UTC)
• Late registration: JPY 100,000 (ends June 19)
• Remote participant registration: JPY 20,000 (ends June 19)

• Our facilities can support about 600+ attendees. Based on the previous Cool Stars meetings, we expect that every interested astronomer should have a chance to join, but the only guarantee is to register early. Subscribe to our mailing list to receive updates.
• If the presenting author of a poster or talk does not pay the registration fee by the deadline of the normal registration fee (May 7), the poster / talk will be removed.