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Spica

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Alpha Virginis A/B
BERJAYA
Lokasi Spica (pérangan kiwa ngisor tengah)
Dhata pangamatan
Epos J2000
Rasi lintang Virgo
Asensio rekta 13j 25m 11.5793d[1]
Dhéklinasi −11° 09′ 40.759″[1]
Magnitudo katon (V) +1.04
Ciri-ciri
Kelas spektrumB1 III-IV/B2 V[2]
Indèks warna U-B−0.94[3]
Indèks warna B-V−0.24[3]
Jinis variabelβ Cep,
Rotating ellipsoid
Astrometri
Kacepetan radhial (Rv)+1.0[4] km/s
Gerak dhiri (μ) RA: −42.50[1] mas/taun
Dek.: −31.73[1] mas/taun
Paralaks (π)12.44 ± 0.86[1] mas
Let260 ± 20 tc
(80 ± 6 pc)
Magnitudo mutlak (MV)−3.55 (−3.5/−1.5)[5]
Orbit[6]
Period (P)4.0145898 d
Eccentricity (e)0.067 ± 0.014
Inclination (i)54 ± 6°
Periastron epoch (T)2440678.09
Argument of periastron (ω)
(secondary)		140 ± 10°
Detail
Primary
Massa10.25 ± 0.68[6] M☉
Radhius7.40 ± 0.57[6] R☉
Gravitasi permukaan (log g)3.7 ± 0.1[5]
Luminositas12,100[7] L☉
Suhu22,400[5] K
Kacepetan rotasi (v sin i)199 ± 5[6] km/s
Secondary
Massa6.97 ± 0.4[6] M☉
Radhius3.64 ± 0.28[6] R☉
Luminositas1,500[7] L☉
Suhu18,500[7] K
Kacepetan rotasi (v sin i)87 ± 6[6] km/s
Pamènèhan jeneng liya
Spica, Azimech, 角宿一, Spica Virginis, Alaraph, Dana, α Virginis, 67 Virginis, HR 5056, BD -10°3672, HD 116658, GCTP 18144, FK5 498, CCDM 13252-1109, SAO 157923, HIP 65474.[8]

Spica (α Vir, α Virginis, Alpha Virginis) ya iku lintang kang ingkang padhang piyambak ning rasi bintang Virgo, lan lintang ingkang padhang piyambak kaping 15 kang katon nalika bengi. Lintang iki dhuweni jarak kira-kira 260 taun cahya saka Bumi. Lintang iki uga dikenal dadi raksasa biru, lan kagolong variable saka Beta Cephei type.

Spica kagolong lintang kang paling panas lan lumrahé duwé warna biru.

Rujukan

[besut | besut sumber]
  1. 1 2 3 4 5 Perryman, M. A. C.; Lindegren; Kovalevsky; Hoeg; Bastian; Bernacca; Crézé; Donati; Grenon (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics. 323: L49–L52. Bibcode:1997A&A...323L..49P. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (pitulung)
  2. ↑ Schnerr, R. S. (June 2008). "Magnetic field measurements and wind-line variability of OB-type stars" (PDF). Astronomy and Astrophysics. 483 (3): 857–867. Bibcode:2008A&A...483..857S. doi:10.1051/0004-6361:20077740. Dibukak ing 2010-04-16. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (pitulung)[pranala mati permanèn]
  3. 1 2 Pfleiderer, J.; Mayer, U. (October 1971). "Near-ultraviolet surface photometry of the southern Milky Way". Astronomical Journal. 76: 691. Bibcode:1971AJ.....76..691P. doi:10.1086/111186.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ↑ Wilson, Ralph Elmer (1953). General Catalogue of Stellar Radial Velocities. Washington: Carnegie Institution of Washington. Bibcode:1953QB901.W495.....
  5. 1 2 3 Herbison-Evans, D.; Hanbury Brown, R.; Davis, J.; Allen, L. R.; Hanbury Brown; Davis; Allen (1971). "A study of alpha Virginis with an intensity interferometer". Monthly Notices of the Royal Astronomical Society. 151: 161−176. Bibcode:1971MNRAS.151..161H.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. 1 2 3 4 5 6 7 Harrington, David; Koenigsberger, Gloria; Moreno, Edmundo; Kuhn, Jeffrey (October 2009). "Line-profile Variability from Tidal Flows in Alpha Virginis (Spica)". The Astrophysical Journal. 704 (1): 813–830. Bibcode:2009ApJ...704..813H. doi:10.1088/0004-637X/704/1/813.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. 1 2 3 Kaler, Jim. "Spica". Stars. Dibukak ing 2010-04-15.
  8. ↑ "V* alf Vir -- Variable Star of beta Cep type". SIMBAD. Centre de Données astronomiques de Strasbourg. Dibukak ing 2010-04-13.
  9. Evans, James (1998). The History and Practice of Ancient Astronomy. Oxford University Press. kc. 259. ISBN 0195095391.
  10. Allen, Richard Hinckley (2003). Star Names and Their Meanings. Kessinger Publishing. kc. 468. ISBN 0766140288.
  11. Rufus, W. Carl (April 1943). "Copernicus, Polish Astronomer, 1473–1543". Journal of the Royal Astronomical Society of Canada. 37 (4): 134. Bibcode:1943JRASC..37..129R.
  12. Moesgaard, Kristian P. (1973). "Copernican influence on Tycho Brahe". The reception of Copernicus' heliocentric theory: proceedings of a symposium organized by the Nicolas Copernicus Committee of the International Union of the History and Philosophy of Science. Toruń, Poland: Studia Copernicana, Springer. ISBN 9027703116. {{cite conference}}: Unknown parameter |editors= ignored (pitulung)
  13. Breit, Derek C. (March 12, 2010). "Diary of Astronomical Phenomena 2010". Poyntsource.com. Dibukak ing 2010-04-13.
  14. Riddle, R. L.; Bagnuolo, W. G.; Gies, D. R.; Bagnuolo; Gies (December 2001). "Spectroscopy of the temporal variations of α Vir". Bulletin of the American Astronomical Society. 33: 1312. Bibcode:2001AAS...199.0613R.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  15. Beech, M. (August 1986). "The ellipsoidal variables. III - Circularization and synchronization". Astrophysics and Space Science. 125 (1): 69–75. Bibcode:1986Ap&SS.125...69B. doi:10.1007/BF00643972.
  16. Morris, S. L. (August 1985). "The ellipsoidal variable stars". Astrophysical Journal, Part 1. 295: 143–152. Bibcode:1985ApJ...295..143M. doi:10.1086/163359.
  17. Gies, Douglas R.; Bagnuolo, William G., Jr.; Penny, Laura R.; Bagnuolo (April 1997). "Photospheric Heating in Colliding-Wind Binaries". Astrophysical Journal. 479: 408. Bibcode:1997ApJ...479..408G. doi:10.1086/303848.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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