Plaskett yulduzi

Plaskett yulduzi ― HR 2422 yoki V640 Monocerotis nomi bilan ham tanilgan, Monoceros yulduz turkumidagi spektroskopik ikkilik yulduzdir. Quyoshdan 500 yoruglik yili masofasida joylashgan^[1]^[2].

Bu kashf etilgan eng massiv qo'shaloq yulduzlardan biri bo'lib, umumiy massasi taxminan 100 ta quyosh massasini tashkil etadi^[3]. Uzoq vaqt davomida eng katta ikki tomonlama tizim hisoblangan^[4]. Biroq, 1996-2005-yillarda Eta Kilyaning batafsil tadqiqotlari shuni koʻrsatdiki, 150 ta quyosh massasi boʻlgan bu yulduz ilgari yagona deb hisoblangan ikki tomonlama tizimdir

Tizim kanadalik astronom Jon Stenli Plaskett sharafiga nomlangan, u 1922-yilda oʻgʻli Herri Hemli Plaskett bilan birga tizim ikki ekanligini koʻrsatdi, shuningdek, birinchi marta uning tarkibiy qismlari davri va massasini oʻlchagan^[5].

Bu juftlik umumiy koʻrinadigan 6,05 m yulduz qiymatiga ega^[6].

Juftlikning orbital aylanish davri 14,39625 ± 0,00095 kun. Tizimning ikkinchi komponenti 300 km / s radiusli tezlikda eksa atrofida juda tez aylanadi va shuning uchun kuchli tekislangan ellipsoid shakliga ega boʻlishi kerak^[7].

Manbalar

↑ Megier, A.; et al. (November 2009), „The interstellar Ca II distance scale“, Astronomy and Astrophysics, 507 (2): 833–840, Bibcode:2009A&A...507..833M, doi:10.1051/0004-6361/20079144
↑ {{статья|заглавие=UBVRIJKL photometry of the bright stars|том=4|номер=99|bibcode=1966CoLPL...4...99J|автор=Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z.|год=1966|язык=en|издательство=|издание=
↑ Wilson, Ralph Elmer. General Catalogue of Stellar Radial Velocities. Washington: Carnegie Institution of Washington, 1953.
↑ van Leeuwen, F. Validation of the new Hipparcos reduction^(ingl.) // Astronomy and Astrophysics. — EDP Sciences, 2007. — November (vol. 474, no. 2). — P. 653—664. — DOI:10.1051/0004-6361:20078357. — Bibcode:2007A&A...474..653V. —

Arxiv

0708.1752

.
↑ Linder, N.; et al. (October 2008), „High-resolution optical spectroscopy of Plaskett's star“, Astronomy and Astrophysics, 489 (2): 713–723, arXiv:0807.4823, Bibcode:2008A&A...489..713L, doi:10.1051/0004-6361:200810003
↑ Mahy, L.; et al. (January 2011), „Plaskett's star: analysis of the CoRoT photometric data“, Astronomy and Astrophysics, 525: A101, arXiv:1010.4959, Bibcode:2011A&A...525A.101M, doi:10.1051/0004-6361/201014777
↑ „PLASKETT STAR -- Double or multiple star“, SIMBAD, Centre de Données astronomiques de Strasbourg, qaraldi: 2012-01-03

[aaa507_2_833-1] Megier, A.; et al. (November 2009), „The interstellar Ca II distance scale“, Astronomy and Astrophysics, 507 (2): 833–840, Bibcode:2009A&A...507..833M, doi:10.1051/0004-6361/20079144

[clpl4_99-2] {{статья|заглавие=UBVRIJKL photometry of the bright stars|том=4|номер=99|bibcode=1966CoLPL...4...99J|автор=Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z.|год=1966|язык=en|издательство=|издание=

[gcsrv-3] Wilson, Ralph Elmer. General Catalogue of Stellar Radial Velocities. Washington: Carnegie Institution of Washington, 1953.

[aaa474_2_653-4] van Leeuwen, F. Validation of the new Hipparcos reduction^(ingl.) // Astronomy and Astrophysics. — EDP Sciences, 2007. — November (vol. 474, no. 2). — P. 653—664. — DOI:10.1051/0004-6361:20078357. — Bibcode:2007A&A...474..653V. —

Arxiv

0708.1752

.

[aaa489_2_713-5] Linder, N.; et al. (October 2008), „High-resolution optical spectroscopy of Plaskett's star“, Astronomy and Astrophysics, 489 (2): 713–723, arXiv:0807.4823, Bibcode:2008A&A...489..713L, doi:10.1051/0004-6361:200810003

[aaa525_101-6] Mahy, L.; et al. (January 2011), „Plaskett's star: analysis of the CoRoT photometric data“, Astronomy and Astrophysics, 525: A101, arXiv:1010.4959, Bibcode:2011A&A...525A.101M, doi:10.1051/0004-6361/201014777

[SIMBAD-7] „PLASKETT STAR -- Double or multiple star“, SIMBAD, Centre de Données astronomiques de Strasbourg, qaraldi: 2012-01-03

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