Thorne–Żytkow object
Theoretical hybrid star type / From Wikipedia, the free encyclopedia
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"TZO" redirects here. For the ISO 639 "tzo" language, see Tzotzil language.
"Hybrid star" redirects here. For a neutron star with a quark matter core, see Strange star.
A Thorne–Żytkow object (TŻO or TZO), also known as a hybrid star, is a conjectured type of star wherein a red giant or red supergiant contains a neutron star at its core, formed from the collision of the giant with the neutron star. Such objects were hypothesized by Kip Thorne and Anna Żytkow in 1977.[1] In 2014, it was discovered that the star HV 2112, located in the Small Magellanic Cloud (SMC), was a strong candidate.[2][3] Another possible candidate is the star HV 11417, also located in the SMC.[4]