2 papers
astro-ph.EP2025
JWST Detection of Hydrocarbon Ices and Methane Gas on Makemake
Silvia Protopapa, Ian Wong, Emmanuel Lellouch +15
JWST/NIRSpec observations of Makemake reveal a chemically complex surface and evidence of gaseous CH. Our spectral modeling indicates a surface composition consisting of CH…
astro-ph.HE2025
Rotational Dynamics in Pulsational Pair-Instability Supernovae: Implications for Mass-Loss and Transient Events
Trang N. Huynh, Emmanouil Chatzopoulos, Nageeb Zaman
Pulsational pair-instability supernovae (PPISNe) are transient events occurring in progenitor stars with helium cores of approximately 32-65 solar masses, where rapid electron-posi…