T Crucis

T Crucis is a star in the constellation Crux. A Cepheid variable, its apparent magnitude ranges from 6.32 to 6.83 over 6.73331 days.[3] It is a yellow-white supergiant that pulsates between spectral types F6Ib and G2Ib.[3] The radius is 55 times that of the Sun.

T Crucis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Crux
Right ascension 12h 21m 21.12807s[1]
Declination −62° 16′ 53.8790″[1]
Apparent magnitude (V) 6.32 - 6.83[2]
Characteristics
Evolutionary stage F6-G2Ib[3]
Variable type δ Cep[2]
Astrometry
Proper motion (μ) RA: −10.915[1] mas/yr
Dec.: −0.471[1] mas/yr
Parallax (π)1.2106 ± 0.0142 mas[1]
Distance2,690 ± 30 ly
(826 ± 10 pc)
Absolute magnitude (MV)−3.49[4]
Details
Mass7.2[1] M☉
Radius55[1] R☉
Luminosity2,601[1] L☉
Surface gravity (log g)1.52[1] cgs
Temperature4,676[1] K
Metallicity [Fe/H]0.09[4] dex
Age57[4] Myr
Other designations
CD−61°3428, HD 107447, HIP 60259, SAO 251861[5]
Database references
SIMBADdata
Light curve of T Crucis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)

References
  1. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017). "General catalogue of variable stars". Astronomy Reports. GCVS 5.1. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
  3. Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star Observers. Retrieved 12 March 2014.
  4. Acharova, I. A.; et al. (2012). "Galactic restrictions on iron production by various types of supernovae". Monthly Notices of the Royal Astronomical Society. 420 (2): 1590. arXiv:1111.2152. Bibcode:2012MNRAS.420.1590A. doi:10.1111/j.1365-2966.2011.20161.x. S2CID 118404944.
  5. "V* T Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-01-11.


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