The P Cygni Profile and Friends
If there’s one spectral line profile which most amateur astronomers have heard of it’s the P Cygni profile. P Cygni itself is a class B star lying in the plain of the northern MilkyWay close to the second magnitude star Gamma Cygni. P Cygni profiles are all to do with stellar winds and they come as we shall see in various interesting guises.
KeywordsEmission Line Absorption Line Accretion Disk Absorption Component Stellar Wind
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