What is the current evolutionary phase of the star HD 140283?
Answer
Subgiant phase
HD 140283 is currently noted to be in the subgiant phase of its evolution, transitioning away from the main sequence.
Related Questions
What is the formal catalog designation for the star nicknamed the Methuselah Star?What stellar classification category does HD 140283 belong to due to its low metallicity?What was the initial, controversial estimated age for the Methuselah Star based on early modeling?Which key factor, if slightly adjusted, heavily influences the calculated luminosity and thus the derived age of HD 140283?What is the current evolutionary phase of the star HD 140283?How did the theorized Population III stars fundamentally differ from HD 140283 in composition and size?What crucial function did the short, spectacular lives and subsequent explosions of Population III stars serve?What does a refined age calculation of $14.46 ext{ billion years} ext{ with an uncertainty of } ext{0.8 billion years}$ suggest is the *youngest* plausible age for the star?What is the primary scientific lesson derived from the Methuselah Star age discrepancy?In which constellation is the star HD 140283 located approximately 190 light-years away?What element's abundance does early modeling struggle with, impacting the star's opacity and fuel burn rate?