Kappa Crucis (star)
 κ Cru (on the left), a blue supergiant and the third brightest star in the Jewel Box cluster | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Crux |
| Right ascension | 12h 53m 48.91920s[1] |
| Declination | −60° 22′ 34.4808″[1] |
| Apparent magnitude (V) | 5.98[2] |
| Characteristics | |
| Spectral type | B3Ia[3] |
| U−B color index | −0.58[2] |
| B−V color index | +0.22[2] |
| Astrometry | |
| Radial velocity (Rv) | -3.5[4] km/s |
| Proper motion (μ) | RA: −3.60[1] mas/yr Dec.: −1.89[1] mas/yr |
| Parallax (π) | -1.32 ± 0.57[1] mas |
| Distance | n/a ly |
| Details | |
| Surface gravity (log g) | 2.20[5] cgs |
| Temperature | 15,950[5] K |
| Rotational velocity (v sin i) | 70[5] km/s |
| Other designations | |
Kappa Crucis (κ Cru, HD 111973) is a star in star cluster NGC 4755,[6] which is also known as the Kappa Crusis Cluster.
References
- 1 2 3 4 5 van Leeuwen, F. (November 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.
- 1 2 3 Dachs, J.; Kaiser, D. (November 1984), "UBV photometry of the southern galactic cluster NGC 4755 = Kappa Crucis", Astronomy and Astrophysics Supplement Series 58: 411−429, Bibcode:1984A&AS...58..411D.
- ↑ Prinja, R. K.; Massa, D. L. (October 2010), "Signature of wide-spread clumping in B supergiant winds", Astronomy and Astrophysics 521: 4, Bibcode:2010A&A...521L..55P, doi:10.1051/0004-6361/201015252, L55.
- ↑ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters 32 (11): 759–771, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
- 1 2 3 Dufton, P. L.; et al. (2006), "The VLT-FLAMES survey of massive stars: Stellar parameters and rotational velocities in NGC 3293, NGC 4755 and NGC 6611", Astronomy and Astrophysics 457: 265, arXiv:astro-ph/0606409, Bibcode:2006A&A...457..265D, doi:10.1051/0004-6361:20065392.
- ↑ Corti, M. A.; Orellana, R. B. (May 2013), "Members of Centaurus OB1 and NGC 4755: new spectroscopic and astrometric studies", Astronomy & Astrophysics 553: 12 pp, Bibcode:2013A&A...553A.108C, doi:10.1051/0004-6361/201220743, A108
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