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astro-ph.SR2025
Planetary Nebulae
Orsola De Marco, Isabel Aleman, Stavros Akras
Planetary nebulae are formed by the matter ejected by low-to-intermediate mass stars (~0.8-8 times the mass of the Sun) towards the end of their lives. As hydrogen and then helium…
astro-ph.SR2012
IC4663: the first unambiguous [WN] Wolf-Rayet central star of a planetary nebula
Brent Miszalski, Paul A. Crowther, Orsola De Marco +4
Several [WC]-type central stars of planetary nebulae (PNe) are known to mimic the spectroscopic appearance of massive carbon-rich or WC-type Wolf-Rayet stars. In stark contrast, no…