Astronomy:HD 125288
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 20m 19.54262s[1] |
| Declination | −56° 23′ 11.3900″[1] |
| Apparent magnitude (V) | 4.30[2] |
| Characteristics | |
| Evolutionary stage | Supergiant[3] |
| Spectral type | B5Ib/II[4] or B6Ib[5] |
| B−V color index | 0.082±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | 4.2±2.7[2] km/s |
| Proper motion (μ) | RA: −9.64[1] mas/yr Dec.: −7.46[1] mas/yr |
| Parallax (π) | 2.66 ± 0.20[1] mas |
| Distance | 1,230 ± 90 ly (380 ± 30 pc) |
| Absolute magnitude (MV) | −3.56[2] |
| Details | |
| Mass | 7.9±0.4[6] M☉ |
| Radius | 18.87+1.35 −1.50[7] R☉ |
| Luminosity | 806.3±142.9[7] L☉ |
| Surface gravity (log g) | 2.55[3] cgs |
| Temperature | 7,081+299 −242[7] K |
| Rotational velocity (v sin i) | 23[3] km/s |
| Age | 37.3±4.2[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 125288 is a single[9] star in the southern constellation of Centaurus. It has the Bayer designation v Centauri (lower case V); while HD 125288 is the star's identifier in the Henry Draper catalogue. The object has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.30.[2] Based on parallax measurements, it is located at a distance of approximately 1,230 light years from the Sun.[1] This is a candidate runaway star that is moving to the west and falling back into the Galactic plane.[5] It has an absolute magnitude of −3.56.[2]
This massive B-type supergiant star[3] has a stellar classification of B5Ib/II[4] or B6Ib.[5] It is around 37 million years old and has 8 times the mass of the Sun.[6] The star has expanded to 19[7] times the girth of the Sun and is spinning with a projected rotational velocity of 23 km/s.[3] It is radiating 806 times the luminosity of the Sun from its photosphere at an effective temperature of 7,081 K.[7]
In 2016, an asterism including HD 125288 (SAO 241641) was unofficially identified in honor of David Bowie.[10][11]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. Vizier catalog entry
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 3.2 3.3 3.4 Fraser, M. et al. (2010). "Atmospheric parameters and rotational velocities for a sample of Galactic B-type supergiants". Monthly Notices of the Royal Astronomical Society 404 (3): 1306. doi:10.1111/j.1365-2966.2010.16392.x. Bibcode: 2010MNRAS.404.1306F.
- ↑ 4.0 4.1 Houk, Nancy; Cowley, A. P. (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. 1. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode: 1978mcts.book.....H.
- ↑ 5.0 5.1 5.2 Maíz Apellániz, J. et al. (August 2018). "Search for Galactic runaway stars using Gaia Data Release 1 and HIPPARCOS proper motions". Astronomy & Astrophysics 616: 20. doi:10.1051/0004-6361/201832787. A149. Bibcode: 2018A&A...616A.149M.
- ↑ 6.0 6.1 6.2 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. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T.
- ↑ 7.0 7.1 7.2 7.3 7.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ "HD 125288". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+125288.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society 389 (2): 869–879. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E.
- ↑ "David Bowie Honored With Lightning Bolt-Shaped Constellation". 18 January 2016. http://www.huffingtonpost.com/entry/david-bowie-constellation_us_569c93abe4b0778f46f9d9dc.
- ↑ "Constellation Bowie? I don't think so" (in en-US). 2016-01-18. http://universalworkshop.com/guysblog/2016/01/18/constellation-bowie-i-dont-think-so/.
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