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41 Arietis

Binary star in the constellation Aries

Summary

Binary star in the constellation Aries

| r-i = | v-r = | b-v = −0.10 | u-b = −0.38

41 Arietis (abbreviated 41 Ari) is a triple star system in the northern constellation of Aries. With an apparent visual magnitude of 3.63, this system is readily visible to the naked eye. It has an annual parallax shift of 19.69 mas, which indicates it is at a distance of 166 ly from the Sun.

The system consists of a binary pair,) The components of A are themselves designated 41 Arietis Aa (formally named Bharani ) and Ab.

Nomenclature

41 Arietis is the system's Flamsteed designation. Bayer did not assign a designation to this star, but Bode introduced the designation c Arietis. Bode considered the star part of the asterism Musca Borealis within Aries – he called the entire constellation Aries et Musca. The designations of the two constituents as 41 Arietis A and D, and those of A's components - 41 Arietis Aa and Ab - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).

Nicolas-Louis de Lacaille called the star Līliī Austrīnā () 'southern of Lilium' (in Latin) in 1757, as a star of the now-defunct constellation of Lilium (the Lily). To him 39 Arietis was Līliī Boreā, 'northern of Lilium'.

In Hindu astronomy, Bharani (भरणी bharaṇī, ) is the second nakshatra, or lunar mansion corresponding to 35, 39 and 41 Arietis. In 2016, the IAU organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems. It approved the name Bharani for the component 41 Arietis Aa on 30 June 2017 and it is now so included in the List of IAU-approved Star Names.

In Chinese, 胃宿 (Wèi Su), meaning Stomach (asterism), refers to an asterism consisting of 41, 35 and 39 Arietis. Consequently, the Chinese name for 41 Arietis itself is 胃宿三 (Wèi Su sān, .)

In Avestan, the star was known as Upa-paoiri, and it was associated with one of the yazatas.

Properties

The primary component is a B-type main sequence star with a stellar classification of B8 Vn. The suffix 'n' indicates 'nebulous' absorption lines in the star's spectrum caused by the Doppler effect of rapid rotation. It has a projected rotational velocity of 175 km/s. This is creating an equatorial bulge that is 12% larger than the star's polar radius. It is a candidate member of the AB Doradus moving group and has an orbiting companion at an angular separation of 0.3 arcseconds.

References

References

  1. "Washington Double Star Catalog". United States Naval Observatory.
  2. "Naming Stars". IAU.org.
  3. Wagman, Morton. (2003). "Lost Stars". McDonald & Woodward.
  4. (2010). "On the naming convention used for multiple star systems and extrasolar planets".
  5. de Lacaille, Nicolas-Louis. (1757). "Astronomiae fundamenta novissimis solis et stellarum observationibus stabilita, Lutetiae in Collegio mazarineo et in Africa ad caput Bonae Spei peractis a Nicolao Ludovico de La Caille". J.-J.-St. Collombat.
  6. Bailey, Francis. (1833). "La Caille's Catalogue of 398 principal Stars, Memoirs of the Royal Astronomical Society, Vol 5". Priestley and Weale.
  7. "IAU Working Group on Star Names (WGSN)".
  8. "WG Triennial Report (2015-2018) - Star Names".
  9. {{in lang. zh ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN. 978-986-7332-25-7.
  10. {{in lang. zh [[:zh-tw:白羊座. 白羊座]]
  11. [http://www.avesta.org/angels.html ANGELS:Zoroastrian]
  12. {{cite XHIP. 13209
  13. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal.
  14. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics.
  15. van Leeuwen, F.. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics.
  16. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory.
  17. (August 2011). "High-contrast Imaging Search for Planets and Brown Dwarfs around the Most Massive Stars in the Solar Neighborhood". The Astrophysical Journal.
  18. (November 1972). "Spectral classification of the bright B8 stars". Astronomical Journal.
  19. Wilson, Ralph Elmer. (1953). "General Catalogue of Stellar Radial Velocities". [[Carnegie Institution of Washington]].
  20. (July 2002). "Rotational Velocities of B Stars". The Astrophysical Journal.
  21. (June 2012). "The Sizes of the Nearest Young Stars". The Astronomical Journal.
  22. (March 2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review.
  23. (September 2008). "A catalogue of multiplicity among bright stellar systems". [[Monthly Notices of the Royal Astronomical Society]].
  24. "41 Ari".
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

flamsteed-objects bayer-objects henry-draper-catalogue-objects hipparcos-objects spectroscopic-binaries aries-(constellation) b-type-main-sequence-stars stars-with-proper-names bright-star-catalogue-objects durchmusterung-objects
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