Astronomy:T Crucis
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Short description: Variable star in the constellation Crux
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas |
| 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 | |
| Database references | |
| SIMBAD | data |
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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.0 2.1 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. doi:10.1134/S1063772917010085. Bibcode: 2017ARep...61...80S.
- ↑ 3.0 3.1 3.2 Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star Observers. http://www.aavso.org/vsx/index.php?view=detail.top&oid=10771. Retrieved 12 March 2014.
- ↑ 4.0 4.1 4.2 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. doi:10.1111/j.1365-2966.2011.20161.x. Bibcode: 2012MNRAS.420.1590A.
- ↑ "V* T Cru". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=V%2A+T+Cru.
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