| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Crux |
| Right ascension | 12h 18m 26.24772s [1] |
| Declination | –64° 00′ 11.0528″ [1] |
| Apparent magnitude (V) | 4.04 [2] |
| Characteristics | |
| Spectral type | B2.5V [3] |
| U−B color index | –0.68 [2] |
| B−V color index | –0.17 [2] |
| Astrometry | |
| Radial velocity (Rv) | +15.8 [4] km/s |
| Proper motion (μ) |
RA: −33.80
[1]
mas/
yr Dec.: −10.15 [1] mas/ yr |
| Parallax (π) | 9.12 ± 0.45 mas [1] |
| Distance | 360 ± 20
ly (110 ± 5 pc) |
| Absolute magnitude (MV) | −1.13 [5] |
| Details | |
| Mass | 6.4±0.1 [6] M☉ |
| Luminosity | 737 [5] L☉ |
| Temperature | 3,832 [7] K |
| Rotational velocity (v sin i) | 115 [8] km/s |
| Age | 20.0±4.3 [6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Zeta Crucis, Latinized from ζ Crucis, is a binary star system in the southern constellation of Crux. It is visible to the naked eye with an apparent magnitude of 4.06m. ζ Crucis is located at about 360 light-years from the Sun. It is a member of the Lower Centaurus–Crux subgroup of the Scorpius–Centaurus association. [10]
This is a double-lined spectroscopic binary star system. [11] The spectrum matches a B-type main-sequence star with a stellar classification of B2.5 V. There is a faint visual companion with an apparent magnitude of 12.49. [12]
References
- ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752. Bibcode: 2007A&A...474..653V. doi: 10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
- ^ a b c Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewskj, W. Z. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory. 4 (99): 99. Bibcode: 1966CoLPL...4...99J.
- ^ Hiltner, W. A.; Garrison, R. F.; Schild, R. E. (July 1969). "MK Spectral Types for Bright Southern OB Stars". Astrophysical Journal. 157: 313–326. Bibcode: 1969ApJ...157..313H. doi: 10.1086/150069.
- ^ Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick (eds.). Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. Bibcode: 1967IAUS...30...57E.
- ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv: 1007.4883, Bibcode: 2011MNRAS.410..190T, doi: 10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ Gerbaldi, M.; Faraggiana, R.; Balin, N. (November 2001). "Binary systems with post-T Tauri secondaries". Astronomy and Astrophysics. 379: 162–184. Bibcode: 2001A&A...379..162G. doi: 10.1051/0004-6361:20011298.
- ^ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1): 1. Bibcode: 1970CoAsi.239....1B.
- ^ "zet Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-09-10.
- ^ Chen, Christine H.; et al. (September 2012), "A Spitzer MIPS Study of 2.5-2.0 M⊙ Stars in Scorpius–Centaurus", The Astrophysical Journal, 756 (2): 24, arXiv: 1207.3415, Bibcode: 2012ApJ...756..133C, doi: 10.1088/0004-637X/756/2/133, S2CID 119278056, 133.
- ^ Chini, R.; et al. (2012), "A spectroscopic survey on the multiplicity of high-mass stars", Monthly Notices of the Royal Astronomical Society, 424 (3): 1925, arXiv: 1205.5238, Bibcode: 2012MNRAS.424.1925C, doi: 10.1111/j.1365-2966.2012.21317.x, S2CID 119120749.
- ^ Gahm, G. F.; Ahlin, P.; Lindroos, K. P. (January 1983). "A study of visual double stars with early type primaries. I - Spectroscopic results". Astronomy and Astrophysics Supplement Series. 51: 143–159. Bibcode: 1983A&AS...51..143G.
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |