Supernova P Cygni profiles

Forums Variable Stars possible supernova AT 2021gmj in NGC3310 (UMa) Supernova P Cygni profiles

Hugh Allen

Hi Robin,

Very nice supernova spectrum as always. What is the correct way to estimate ejecta velocities along the line of sight from P Cygni profiles? Is it the emission centre to the absorption minimum or to the absorption blue edge?