subgiant star
C6901
concept
A subgiant star is a stellar object that has exhausted hydrogen in its core and is transitioning off the main sequence, expanding and cooling as it begins to burn hydrogen in a surrounding shell.
All labels observed (5)
| Label | Occurrences |
|---|---|
| subgiant star canonical | 4 |
| A-type subgiant star | 1 |
| B-type subgiant star | 1 |
| K-type subgiant star | 1 |
| main-sequence turnoff star | 1 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: subgiant star
Generated description
A subgiant star is a stellar object that has exhausted hydrogen in its core and is transitioning off the main sequence, expanding and cooling as it begins to burn hydrogen in a surrounding shell.
Instances (8)
| Instance | Via concept surface |
|---|---|
|
23 Tauri (star traditionally named Merope)
surface form:
23 Tauri
|
— |
|
Shaula
surface form:
Shaula A
|
B-type subgiant star |
| Lesath | — |
| Alpha Ophiuchi | A-type subgiant star |
| HD 35468 | main-sequence turnoff star |
|
Algol
surface form:
Algol B
|
— |
|
Beta Persei
surface form:
Beta Persei B
|
K-type subgiant star |
|
variable star Algol
surface form:
Algol B
|
— |