Alpha Ceti

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α Ceti
Diagram showing star positions and boundaries of the Cetus constellation and its surroundings
Cercle rouge 100%.svg

Lokasyon ng α Ceti(nakabilog)
Impormasyon sa pagtingin
Epoka J2000      Equinox J2000
Konstelasyon Cetus
Kanang asensiyon 03h 02m 16.77307s[1]
Deklinasyon +04° 05′ 23.0596″[1]
Maliwanag na  kalakhan (V) 2.53[2]
Katangian
Pag-uuring pambituin M1.5 IIIa[3]
U−B sa talatuntunan ng kulay +1.93[2]
B−V sa talatuntunan ng kulay +1.64[2]
Uri ng baryabulo Wala[4]
Astrometriya
Radyal na hagibis (Rv) –26.08 ± 0.02[5] km/s
Tamang mosyon (μ) KA: -10.41 ± 0.51[1] mas/yr
Dek.: -76.85 ± 0.36[1] mas/yr
Paralaks (π) 13.09 ± 0.44[1] mas
Layo 249 ± 8 st
(76 ± 3 pc)
Lubusang kalakhan (MV) –3.2 ± 0.3[3]
Detalye
Bigat 2.3 ± 0.2[6] M
Radyos 89 ± 5[6] R
Luminosidad 1455 ± 328[6] L
Pang-ibabaw na grabidad (log g) 0.9 ± 0.1[6]
Temperatura 3,795 ± 70[6] K
Metalisidad [Fe/H] 0.00 ± 0.30[6] dex
Rotasyonal na hagibis (v sin i) 6.9[7] km/s
Iba pang pagtatanda
Menkar, Menkab, Mekab, Monkar, Al Minhar, 92 Ceti, HR 911, BD +03°419, HD 18884, SAO 110920, FK5 107, HIP 14135.
Sangguniang pangimpormasyon
SIMBAD data

Ang Alpha Ceti (α Cet, α Ceti) ay isang bituin sa konstelasyon ng Cetus. May tradisyunal na pangalan itong Menkar o Menkab. Nanggaling ang salitang Menkar mula sa salitang Arabe na منخر manħar "butas ng ilong" (ng Cetus).

Ang bituing ito, kasama ang γ Cet (Kaffaljidhma), δ Cet, λ Cet (Menkar), μ Cet, ξ1 Cet at ξ2 Cet ay mga Al Kaff al Jidhmah, "bahagi ng isang kamay".[8]

Sa Wikang Tsino, tumutukoy ang 天囷 (Tiān Qūn), na may kahulugang Circular Celestial Granary, sa isang asterismo na naglalaman ng α Ceti, κ1 Ceti, λ Ceti, μ Ceti, ξ1 Ceti, ξ2 Ceti, ν Ceti, γ Ceti, δ Ceti, 75 Ceti, 70 Ceti, 63 Ceti at 66 Ceti. Dahil dito, nakilala ang α Ceti bilang 天囷一 (Tiān Qūn yī, Ingles: the First Star of Circular Celestial Granary.)[9]

Talababa[baguhin | baguhin ang batayan]

  1. 1.0 1.1 1.2 1.3 1.4 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. 
  2. 2.0 2.1 2.2 Johnson, H. L. et al. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory 4 (99). Bibcode 1966CoLPL...4...99J. 
  3. 3.0 3.1 Tsuji, T. (October 2008), "Cool luminous stars: the hybrid nature of their infrared spectra", Astronomy and Astrophysics 489 (3): 1271–1289, arXiv:0807.4387, Bibcode 2008A&A...489.1271T, doi:10.1051/0004-6361:200809869 
  4. Wittkowski, M. et al. (November 2007), "Polychromatic Interferometry of Mira Variables", in Kerschbaum, F.; Charbonnel, C.; Wing, R. F., Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes, proceedings of the conference held 7-11 August 2006 at University Campus, Vienna, Austria, ASP Conference Series, 378, San Francisco: Astronomical Society of the Pacific, p. 262, Bibcode 2007ASPC..378..262W 
  5. Famaey, B. et al. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics 430 (1): 165–186. arXiv:astro-ph/0409579. Bibcode 2005A&A...430..165F. doi:10.1051/0004-6361:20041272. 
  6. 6.0 6.1 6.2 6.3 6.4 6.5 Wittkowski, M. et al. (December 2006), "Tests of stellar model atmospheres by optical interferometry. IV. VINCI interferometry and UVES spectroscopy of Menkar", Astronomy and Astrophysics 460 (3): 855–864, arXiv:astro-ph/0610150, Bibcode 2006A&A...460..855W, doi:10.1051/0004-6361:20066032 
  7. Massarotti, Alessandro et al. (January 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 
  8. Star Name - R.H. Allen p.160
  9. (Tsino) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日


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