Omega 1 Chayon

Omega 1 Chayonlar[1][2] (ō1 Scorpii, ō1 Sco) — Chayonning zodiacal yulduz turkumidagi yulduz. 3,95[3] aniq yulduz qiymatiga ega va yalangʻoch koʻz bilan kuzatish mumkin. Parallaks oʻlchovlari Quyoshdan 470 yorugʻlik yiligacha boʻlgan masofani baholashga olib keldi. Omega1 Chayonlar chayon-Tsentar uyushmasining bir qismidir[4][5][6].

Omega1 Chayonlar B1 V. spektral sinfining asosiy ketma-ketligi yulduzidir[7]. Uning yorqinligi taxminan 9120 quyosh nuriga ega, bu 5 million yil yoshi va 11 quyosh massasi bilan mos keladi[8]. Radiusi Quyoshnikidan 6,6 marta katta. Atmosferaning tashqi qatlamlarining samarali harorati 26530 K[7].

Omega 1 Chayonlar Beta Sefei kabi oʻzgaruvchan yulduzdir va kuniga 15 tsiklini radial boʻlmagan pulsatsiyalarni boshdan kechiradi[9]. Shu bilan birga, sirt harorati 28300 K dan ekvator boʻylab 22600 Kgacha oʻzgaradi. Yulduz tez aylanadi, proektiv aylanish tezligi 105 km/s, aylanish davri 14,4 soatda baholanadi. Yulduzning qutb oʻqi yerdan 60 ° burchak ostida koʻrish nuriga toʻgʻri keladi[10].

Manbalar

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  1. ↑ Deutschman, W. A.; et al. (February 1976), „The galactic distribution of interstellar absorption as determined from the Celescope catalog of ultraviolet stellar observations and a new catalog of UBV, H-beta photoelectric observations“, Astrophysical Journal Supplement Series, 30: 97–225, Bibcode:1976ApJS...30...97D, doi:10.1086/190359.
  2. ↑ 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.
  3. ↑ Bragança, G. A.; et al. (November 2012), „Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk“, The Astronomical Journal, 144 (5): 10, arXiv:1208.1674, Bibcode:2012AJ....144..130B, doi:10.1088/0004-6256/144/5/130, 130.
  4. ↑ Jilinski, E.; et al. (March 2006), „Radial velocity measurements of B stars in the Scorpius-Centaurus association“, Astronomy and Astrophysics, 448 (3): 1001–1006, arXiv:astro-ph/0601643, Bibcode:2006A&A...448.1001J, doi:10.1051/0004-6361:20041614.
  5. ↑ Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick (muh.), „The Revision of the General Catalogue of Radial Velocities“, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
  6. ↑ Anderson, E.; Francis, Ch. (2012), „XHIP: An extended hipparcos compilation“, Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  7. ↑ 7,0 7,1 Bragança, G. A.; et al. (November 2012), „Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk“, The Astronomical Journal, 144 (5): 10, arXiv:1208.1674, Bibcode:2012AJ....144..130B, doi:10.1088/0004-6256/144/5/130, 130.
  8. ↑ Pecaut, Mark J.; et al. (February 2012), „A Revised Age for Upper Scorpius and the Star Formation History among the F-type Members of the Scorpius-Centaurus OB Association“, Astrophysical Journal, 746 (2): 154, arXiv:1112.1695, Bibcode:2012ApJ...746..154P, doi:10.1088/0004-637X/746/2/154. See table 7.{{citation}}: CS1 maint: postscript ()
  9. ↑ Daszyńska-Daszkiewicz, J.; Niemczura, E. (April 2005), „Metallicity of mono- and multiperiodic β Cephei stars“, Astronomy and Astrophysics, 433 (3): 1031–1035, arXiv:astro-ph/0410442, Bibcode:2005A&A...433.1031D, doi:10.1051/0004-6361:20040397.
  10. ↑ Berdyugina, S. V.; et al. (July 2003), „Surface imaging of stellar non-radial pulsations. II. The β Cephei star ω1 Sco“, Astronomy and Astrophysics, 406: 281–285, Bibcode:2003A&A...406..281B, doi:10.1051/0004-6361:20030747.

Havolalar

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