Beta Ceti

β Ceti
Diagram showing star positions and boundaries of the Cetus constellation and its surroundings

Lokasyon ng β Ceti (nakabilog)
Impormasyon sa pagtingin
Epoka J2000      Equinox J2000
Konstelasyon Cetus
Kanang asensiyon 00h 43m 35.37090s[1]
Deklinasyon –17° 59′ 11.7827″[1]
Maliwanag na  kalakhan (V)2.02[2]
Katangian
Pag-uuring pambituinK0 III[3]
U−B sa talatuntunan ng kulay+0.88[2]
B−V sa talatuntunan ng kulay+1.01[2]
Uri ng baryabuloRotasyonal
Astrometriya
Radyal na hagibis (Rv)+12.9[4] km/s
Tamang mosyon (μ) KA: +232.55[1] mas/yr
Dek.: +31.99[1] mas/yr
Paralaks (π)33.86 ± 0.16[1] mas
Layo96.3 ± 0.5 st
(29.5 ± 0.1 pc)
Lubusang kalakhan (MV)–0.13[5]
Detalye
Bigat2.8[6] M☉
Radyos16.78 ± 0.25[7] R☉
Luminosidad139.1 ± 7.0[7] L☉
Pang-ibabaw na grabidad (log g)2.7[8]
Temperatura4,797[8] K
Metalisidad [Fe/H]–0.09[8] dex
Rotasyonal na hagibis (v sin i)18[9] km/s
Edad> 1[10] Gyr
Iba pang pagtatanda
Deneb Kaitos, Diphda, Difda al Thani, Rana Secunda, 16 Cet, BD–18 115, GCTP 134.00, Gl 31, HD 4128, HIP 3419, HR 188, SAO 147420.[11]
Sangguniang pangimpormasyon
SIMBADdata
ARICNSdata

Ang Beta Ceti (β Cet, β Ceti) ay ang pinakamaliwanag na bituin sa konstelasyon ng Cetus. Kahit na mayroon itong pagtatanda ni Bayer na "beta", ito ang talagang mas maliwanag kaysa sa Alpha Ceti. May tradisyunal na pangalan itongDeneb Kaitos at Diphda. Madaling makita ang naranghang higanteng ito dahil sa lokasyon nito sa madilim na seksiyon ng panlangit na timbulog. Base sa sukatang paralaks, makikita ito sa tinantiyang layo na 96.3 light-year (29.5 parsec) mula sa Mundo.[1]

Talababa

  1. ↑ 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. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. {{cite journal}}: Unknown parameter |month= ignored ()
  2. ↑ 2.0 2.1 2.2 Johnson, H. L.; atbp. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J
  3. ↑ Montes, D.; atbp. (2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society, 328 (1): 45–63, arXiv:astro-ph/0106537, Bibcode:2001MNRAS.328...45M, doi:10.1046/j.1365-8711.2001.04781.x {{citation}}: Unknown parameter |month= ignored ()
  4. ↑ Wielen, R.; atbp. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions, Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W
  5. ↑ Elgarøy, Øystein; Engvold, Oddbjørn; Lund, Niels (1999), "The Wilson-Bappu effect of the MgII K line - dependence on stellar temperature, activity and metallicity", Astronomy and Astrophysics, 343: 222–228, Bibcode:1999A&A...343..222E {{citation}}: Unknown parameter |month= ignored ()
  6. ↑ Sägesser, S. N.; Jordan, C. (2005). "Emission measures for the single giant β Ceti". Mula sa Favata, F.; Hussain, G. A. J.; Battrick, B. (mga pat.). Proceedings of the 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, held 5-9 July, 2004 in Hamburg, Germany. European Space Agency. p. 931. Bibcode:2005ESASP.560..931S. {{cite conference}}: Unknown parameter |booktitle= ignored (|book-title= suggested) (); Unknown parameter |month= ignored ()
  7. ↑ 7.0 7.1 Berio, P.; atbp. (2011), "Chromosphere of K giant stars. Geometrical extent and spatial structure detection", Astronomy & Astrophysics, 535: A59, arXiv:1109.5476, Bibcode:2011A&A...535A..59B, doi:10.1051/0004-6361/201117479 {{citation}}: Unknown parameter |month= ignored ()
  8. ↑ 8.0 8.1 8.2 Massarotti, Alessandro; atbp. (2008). "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity". The Astronomical Journal. 135 (1): 209–231. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209. {{cite journal}}: Unknown parameter |month= ignored ()
  9. ↑ "Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR. Centre de Données astronomiques de Strasbourg. Nakuha noong 2010-09-30.
  10. ↑ "Beta Ceti: Giant Star's Corona Brightens with Age". Chandra Photo Album. Harvard-Smithsonian Center for Astrophysics. 20 Pebrero 2009. Nakuha noong 2011-12-28.
  11. ↑ "bet Cet -- Variable Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Nakuha noong 2010-09-30.

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