T Crucis

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T Crucis
Observation data
Epoch J2000       Equinox J2000
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]
Distance 2,690 ± 30  ly
(826 ± 10  pc)
Absolute magnitude  (MV)−3.49 [4]
Details
Mass 7.2 [1]   M☉
Radius 55 [1]   R☉
Luminosity 2,601 [1]   L☉
Surface gravity (log g)1.52 [1]   cgs
Temperature 4,676 [1]   K
Metallicity [Fe/H]0.09 [4]   dex
Age 57 [4]   Myr
Other designations
CD−61°3428, HD 107447, HIP 60259, SAO 251861 [5]
Database references
SIMBAD data
Light curve of T Crucis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS) T Crucis TESS lightcurve.png
Light curve of T Crucis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)

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.

References

  1. 1 2 3 4 5 6 7 8 9 10 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. 1 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. 1 2 3 Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star Observers . Retrieved 12 March 2014.
  4. 1 2 3 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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