HV 11417

HV 11417
Observation data; Epoch J2000 Equinox J2000
Constellation	Tucana
Right ascension	01h 00m 48.2s
Declination	−72° 51′ 02.1″
Apparent magnitude (V)	19.83
Characteristics
Evolutionary stage	M-type supergiant, Thorne-Żytkow object?
Spectral type	M5Ie
Astrometry
Proper motion (μ)	RA: −0.307 mas/yr ; Dec.: −1.769 mas/yr
Details
Radius	673–798[citation needed] R☉
Luminosity	74100 L☉
Other designations
	HV 11417, PMMR 113, TIC 182293383
Database references
SIMBAD	data

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

^ ^a ^b ^c ^d 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. arXiv:1806.07399. Bibcode:2018MNRAS.479.3101B. doi:10.1093/mnras/sty1744. S2CID 67766043.
^ ^a ^b ^c ^d ^e "HV 11417". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-15.
^ 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) (published September 2020): 135. arXiv:2008.06563. Bibcode:2020ApJ...901..135O. doi:10.3847/1538-4357/abafad.

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[Beasor-1] 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. arXiv:1806.07399. Bibcode:2018MNRAS.479.3101B. doi:10.1093/mnras/sty1744. S2CID 67766043.

[SIMBAD-2] "HV 11417". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-15.

[ogrady-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) (published September 2020): 135. arXiv:2008.06563. Bibcode:2020ApJ...901..135O. doi:10.3847/1538-4357/abafad.

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