Bibing: Difference between revisions
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==IAU Working Group on Star Names== | ==IAU Working Group on Star Names== | ||
The name was | The name was reviewed and adopted by the IAU WGSN on 17 May 2026, and assigned to λ Tauri, and added to the IAU-CSN. In 1848,<ref>Fekel, F. C. Jr.; Tomkin, J. (December 1982), "Secondaries of eclipsing binaries. IV - The triple system Lambda Tauri", ''Astrophysical Journal, Part 1'', '''263''': 289–301, Bibcode:1982ApJ...263..289F, doi:10.1086/160503, hdl:2152/34674</ref> the light from this system was found to vary periodically and it was determined to be an eclipsing binary system—the third such discovered. λ Tauri is a remarkably tight triple star system in the constellation Taurus, with two of the components eclipsing (orbital period ~4 days), with a third lower-mass non-eclipsing companion orbiting the inner pair in ~39 days. The Washington Double Star catalog does not report the triple system, so it does not appear to have been resolved before. At the time of the update of the Multiple Star Catalog by Tokovinin (2018) <ref>Tokovinin, A., "The Updated Multiple Star Catalog", ''The Astrophysical Journal Supplement Series'', Volume 235, Issue 1, article id. 6, 11 pp. (2018).</ref>, the orbital period ratio (8.37) between the outer and inner components (33.07 d / 3.95259 d) was the smallest ratio for any known triple system. | ||
Following WGSN guidelines for a previously unnamed multiple system, where a cultural name would have have usually referred to the unresolved light of the multiple, WGSN technically adopts the name for the primary star. The primary star of λ Tauri, is Bibing, and of type B3V. It is in a tight binary (~4 day orbital period) with a secondary of spectral type A4IV star. And the massive binary is orbited by a fainter tertiary component which orbits the pair in ~39 days. | |||
== Weblinks == | == Weblinks == | ||
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[[Category:IAU-Star Name]] | [[Category:IAU-Star Name]] | ||
[[Category:Eurasia]] | [[Category:Eurasia]] | ||
[[Category:East Asian]] | [[Category:East Asian]] [[Category:Asian]] | ||
[[Category:Chinese]] | [[Category:Chinese]] | ||
[[Category:Tau]] | [[Category:Tau]] | ||
Latest revision as of 01:08, 26 May 2026
Authors: Susanne M Hoffmann, Eric Mamajek, Youla Azkarrula
Bibing is a modern star name adopted by the International Astronomical Union in the IAU-Catalog of Star Names (IAU-CSN). Its origin is Chinese. It is the name of the star λ Tau in constellation Taurus.
Concordance, Etymology, History
Bì ( Net, 畢), or Bì Xiù (Net Mansion/Lodge, 畢宿), one of the Twenty-Eight Mansions, is the fifth mansion of the White Tiger of the West. The 8th star is called by number, Bixiuba (畢宿八, The eighth star of Bixiu), or with the proper name "Bibing (畢柄, The handle of Bi)".
Mythology
IAU Working Group on Star Names
The name was reviewed and adopted by the IAU WGSN on 17 May 2026, and assigned to λ Tauri, and added to the IAU-CSN. In 1848,[1] the light from this system was found to vary periodically and it was determined to be an eclipsing binary system—the third such discovered. λ Tauri is a remarkably tight triple star system in the constellation Taurus, with two of the components eclipsing (orbital period ~4 days), with a third lower-mass non-eclipsing companion orbiting the inner pair in ~39 days. The Washington Double Star catalog does not report the triple system, so it does not appear to have been resolved before. At the time of the update of the Multiple Star Catalog by Tokovinin (2018) [2], the orbital period ratio (8.37) between the outer and inner components (33.07 d / 3.95259 d) was the smallest ratio for any known triple system.
Following WGSN guidelines for a previously unnamed multiple system, where a cultural name would have have usually referred to the unresolved light of the multiple, WGSN technically adopts the name for the primary star. The primary star of λ Tauri, is Bibing, and of type B3V. It is in a tight binary (~4 day orbital period) with a secondary of spectral type A4IV star. And the massive binary is orbited by a fainter tertiary component which orbits the pair in ~39 days.
Weblinks
Reference
- ↑ Fekel, F. C. Jr.; Tomkin, J. (December 1982), "Secondaries of eclipsing binaries. IV - The triple system Lambda Tauri", Astrophysical Journal, Part 1, 263: 289–301, Bibcode:1982ApJ...263..289F, doi:10.1086/160503, hdl:2152/34674
- ↑ Tokovinin, A., "The Updated Multiple Star Catalog", The Astrophysical Journal Supplement Series, Volume 235, Issue 1, article id. 6, 11 pp. (2018).
