Linked from

The 4 pages that link to Hayashi track, each with the reason it gives.

• Red giantRelated: Its cool, extended stellar structure helps explain red giants’ low surface temperatures.

• T Tauri starRelated: It describes the early contraction followed by many low-mass T Tauri stars.

• Pre-main-sequence starRelated: Low-mass pre-main-sequence stars contract along this track while their surface temperatures change little.

• Red-giant branchRelated: It shows how a star’s later giant evolution differs from an earlier contraction track.