Acrux
Alpha Crucis | ||||
Die posisie van Acrux. | ||||
Sterrebeeld | Suiderkruis | |||
Spektraaltipe | B0,5IV / B1V[1] | |||
Waarnemingsdata (Epog J2000) | ||||
Regte klimming | 12h 26m 35.89522s[2] | |||
Deklinasie | -63° 05′ 56.7343″[2] | |||
Skynmagnitude (m) | 0,76[3] (1,33 / 1,75)[4] | |||
Absolute magnitude (M) | -3,77[5] (-2,2 / -2,7)[6] | |||
B-V-kleurindeks | -0,26[3] | |||
Besonderhede | ||||
Massa (M☉) | ||||
Ligsterkte (L☉) | ||||
Ouderdom (jaar) | 10,8 miljoen[8] | |||
Temperatuur (K) | ||||
Rotasiespoed (km/s) | ||||
Ander name | ||||
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Alpha Crucis (
Alpha Crucis lyk met die blote oog soos ’n enkele ster, maar dit is eintlik ’n groep van verskeie sterre. Twee komponente kan visueel onderskei word:
Eienskappe
[wysig | wysig bron]Die twee komponente van
Die koeler, dowwer B-tipe ster HD 108250 lê 90 boogsekondes van die drie sterre van
Op 2 Oktober 2008 het die tuig Cassini-Huygens drie van die stelsel se komponente (A, B en C) geëien terwyl Saturnus se skyf hulle verduister het.[16][17]
Verwysings
[wysig | wysig bron]- ↑ Houk, Nancy (1979), "Michigan catalogue of two-dimensional spectral types for the HD stars", Ann Arbor : Dept. of Astronomy (Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan) 1, Bibcode: 1978mcts.book.....H
- ↑ 2,0 2,1 2,2 van Leeuwen, F. (November 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
- ↑ 3,0 3,1 Corben, P. M. (1966). "Photoelectric magnitudes and colours for bright southern stars". Monthly Notes of the Astron. Soc. Southern Africa. 25: 44. Bibcode:1966MNSSA..25...44C.
- ↑ 4,0 4,1 4,2 Tokovinin, A. A. (1997). "MSC – a catalogue of physical multiple stars". Astronomy and Astrophysics Supplement Series. 124 (1): 75–84. Bibcode:1997A&AS..124...75T. doi:10.1051/aas:1997181. ISSN 0365-0138.
- ↑ Kaltcheva, N. T.; Golev, V. K.; Moran, K. (2014). "Massive stellar content of the Galactic supershell GSH 305+01-24". Astronomy & Astrophysics. 562: A69. Bibcode:2014A&A...562A..69K. doi:10.1051/0004-6361/201321454.
- ↑ Van de Kamp, Peter (1953). "The Twenty Brightest Stars". Publications of the Astronomical Society of the Pacific. 65: 30. Bibcode:1953PASP...65...30V. doi:10.1086/126523.
- ↑ 7,0 7,1 7,2 "Acrux". The Hundred Greatest Stars. 2002. p. 4. doi:10.1007/0-387-21625-1_2. ISBN 0-387-95436-8.
- ↑ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190–200. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
- ↑ 9,0 9,1 Dravins, Dainis; Jensen, Hannes; Lebohec, Stephan; Nuñez, Paul D. (2010). "Stellar intensity interferometry: Astrophysical targets for sub-milliarcsecond imaging". Proceedings of the SPIE. Optical and Infrared Interferometry II. 7734: 77340A. arXiv:1009.5815. Bibcode:2010SPIE.7734E..0AD. doi:10.1117/12.856394.
- ↑ Perryman, Michael (2010), "The Making of History's Greatest Star Map", The Making of History's Greatest Star Map:, Astronomers’ Universe (Heidelberg: Springer-Verlag), doi:10.1007/978-3-642-11602-5, ISBN 978-3-642-11601-8, Bibcode: 2010mhgs.book.....P
- ↑ Bordeleau, André G. (12 Augustus 2013). "Federative Republic of Brazil: Constellations in the Breeze". Flags of the Night Sky. New York: Springer. pp. 1–72. doi:10.1007/978-1-4614-0929-8_1. ISBN 978-1-4614-0928-1. Besoek op 18 Oktober 2016.
- ↑ "I
AU Catalog of Star Names" (in Engels). Geargiveer vanaf die oorspronklike op 20 April 2020. Besoek op 21 November 2016. - ↑ Shatsky, N.; Tokovinin, A. (2002). "The mass ratio distribution of B-type visual binaries in the Sco OB2 association". Astronomy and Astrophysics. 382: 92–103. arXiv:astro-ph/0109456. Bibcode:2002A&A...382...92S. doi:10.1051/0004-6361:20011542.
- ↑ Eggleton, Peter; Tokovinin, A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
- ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
- ↑ NASA/JPL/Space Science Institute. Multimedia – Images – Raw Images Geargiveer 25 Oktober 2008 op Wayback Machine. Besoek op 2008-10-21
- ↑ Cassini "Kodak Moments" - Unmanned Spaceflight.com. Besoek op 2008-10-21
Eksterne skakels
[wysig | wysig bron]- http://jumk.de/astronomie/big-stars/acrux.shtml
- http://www.daviddarling.info/encyclopedia/A/Acrux.html
- Acrux op WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen
α , X-Ray, Astrophoto, Sky Map, Artikels en foto's - Hierdie artikel is vertaal uit die Engelse Wikipedia