{"knowledge_schema": {"broad_category": "Astronomy \u2192 Stellar Properties \u2192 Binary Star Systems", "refinement": "This problem involves understanding the relationship between the luminosity of stars and the equilibrium temperature of planets orbiting them.", "specific_scope": "The focus is on calculating the equilibrium temperature of a planet orbiting a star with a known luminosity ratio compared to another star.", "goal": "Determine the equilibrium temperature of a planet orbiting Star B based on the luminosity relationship with Star A."}, "summary": "This problem is rooted in astronomy, specifically in the study of binary star systems and the effects of stellar luminosity on planetary temperatures. Given that Star A has a luminosity 2.5 times that of Star B, we can use the relationship between luminosity and equilibrium temperature to find the temperature of a planet orbiting Star B. The goal is to calculate this temperature based on the known equilibrium temperature of a similar planet orbiting Star A, leading to the conclusion that the equilibrium temperature of the planet around Star B is 240 K."}