HST photometry reveals radial color gradients in two ETGs that match predictions from the multiple-population scenario linking the UV upturn to second-generation stars from dissolved globular clusters.
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2 Pith papers cite this work. Polarity classification is still indexing.
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2026 2representative citing papers
Weak-CN features in red supergiants across the LMC, M33, and M31 are the expected molecular-equilibrium signature of ordinary cool RSGs rather than an exotic carbon-star intermediate.
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Weak-CN Stars Are Ordinary Cool Red Supergiants
Weak-CN features in red supergiants across the LMC, M33, and M31 are the expected molecular-equilibrium signature of ordinary cool RSGs rather than an exotic carbon-star intermediate.