Intermediate- and high-resolution optical spectroscopy on the nascent planetary nebula Vy 2-2: Evidence of binary-star evolution

Roldán A. Cala, Luis F. Miranda, José F. Gómez +2

Planetary nebulae (PNe) tend to show spectacular non-spherical shapes whose origin is not fully understood. Crucial information about PNe formation can be obtained by studying thei…