HV 11417 explained

HV 11417 is a candidate Thorne–Żytkow object in the Small Magellanic Cloud, put forward in a paper by Emma Beasor and collaborators. The paper also claims that another candidate for the Thorne–Żytkow object, HV 2112, was not a Thorne–Żytkow object because it seemingly lacked any distinguishing quality which would indicate that classification.[1] HV 11417 has since been identified as a likely foreground halo star.[2] As of Gaia's 3rd data release the star has been measured to have a negative measured parallax suggesting a distance of more than 103000ly at the 3-sigma level, and a proper motion consistent with Small Magellanic Cloud stars in its region of the galaxy.

Notes and References

  1. 1806.07399 . 2018MNRAS.479.3101B . 2018-07-02 . 10.1093/mnras/sty1744 . free . Emma R. . Ben . Ivan . Georgia . 3 . . Beasor . Davies . Cabrera-Ziri . Hurst . 3101–3105 . 67766043 . A critical re-evaluation of the Thorne–Żytkow object candidate HV 2112 . 479.
  2. 2008.06563 . 2020ApJ...901..135O . 2020 . 10.3847/1538-4357/abafad . free . Anna . 2 . Astrophysical Journal . O'Grady . 135 . September 2020 . Cool, Luminous, and Highly Variable Stars in the Magellanic Clouds from ASAS-SN: Implications for Thorne-Żytkow Objects and Super-asymptotic Giant Branch Stars . 901.