Dodatkowe przykłady dopasowywane są do haseł w zautomatyzowany sposób - nie gwarantujemy ich poprawności.
X Persei A is either an O-type giant or a B-type main sequence star, which is orbited by a Neutron Star (X Persei B).
An interesting member is X Persei, a double star with one component being in between an O-type giant and a B-type main sequence star, and the other component being a neutron star.