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astro-ph.GA2025
Stephenson 2 DFK 52: Discovery of an exotic red supergiant in the massive stellar cluster RSGC2
Mark A. Siebert, Elvire De Beck, Guillermo Quintana-Lacaci +1
Atacama Large Millimeter/submillimeter Array (ALMA) observations at 1.3mm have recently revealed surprising complexity in the circumstellar environment of DFK 52, a red supergiant…
astro-ph.SR2025
New submillimetre HCN lasers in carbon-rich evolved stars
W. Yang, K. T. Wong, H. Wiesemeyer +6
Strong laser emission from hydrogen cyanide (HCN) at 805 and 891 GHz has been discovered towards carbon-rich (C-rich) AGB stars, originating from the Coriolis-coupled system betwee…