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] |
| 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 |
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
- ^ a b c d e f g h i j 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.
- ^ a b 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.
- ^ a b c Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star Observers. Retrieved 12 March 2014.
- ^ a b c 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.
- ^ "V* T Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-01-11.
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