Discovery of a Thorne–Żytkow object candidate in the Small Magellanic Cloud

  title={Discovery of a Thorne–Żytkow object candidate in the Small Magellanic Cloud},
  author={Emily M. Levesque and Philip Massey and Anna N. Żytkow and Nidia I. Morrell},
  journal={Monthly Notices of the Royal Astronomical Society},
Thorne-Zytkow objects (TZOs) are a theoretical class of star in which a compact neutron star is surrounded by a large, diffuse envelope. Supergiant TZOs are predicted to be almost identical in appearance to red supergiants (RSGs). The best features that can be used at present to distinguish TZOs from the general RSG population are the unusually strong heavy-element and Li lines present in their spectra, products of the star's fully convective envelope linking the photosphere with the… Expand

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