Astronomy:HV 11417

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Short description: Candidate Thorne–Żytkow object in the constellation Tucana
HV 11417
Observation data
Equinox J2000.0]] (ICRS)
Constellation Tucana
Right ascension  01h 00m 48.2s[1]
Declination −72° 51′ 02.1″[1]
Apparent magnitude (V) 19.83[2]
Characteristics
Evolutionary stage M-type supergiant, Thorne-Żytkow object?
Spectral type M5Ie[2]
Astrometry
Proper motion (μ) RA: −0.307[2] mas/yr
Dec.: −1.769[2] mas/yr
Details
Luminosity74100[1] L☉
Other designations
HV 11417, PMMR 113, TIC 182293383[2]
Database references
SIMBADdata

HV 11417 is a candidate Thorne–Żytkow object, 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 possessed no strange quality that would label it as a Thorne–Żytkow object.[1] HV 11417 has since been identified as a likely foreground halo star.[3]

References

  1. ↑ 1.0 1.1 1.2 1.3 Beasor, Emma R.; Davies, Ben; Cabrera-Ziri, Ivan; Hurst, Georgia (2018-07-02). "A critical re-evaluation of the Thorne–Żytkow object candidate HV 2112". Monthly Notices of the Royal Astronomical Society 479 (3): 3101–3105. doi:10.1093/mnras/sty1744. Bibcode: 2018MNRAS.479.3101B. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 "HV 11417". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HV+11417. 
  3. ↑ O'Grady, Anna (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". Astrophysical Journal 901 (2): 135. September 2020. doi:10.3847/1538-4357/abafad. Bibcode: 2020ApJ...901..135O. 



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