Zeta Arietis

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Zeta Arietis
Diagram showing star positions and boundaries of the Aries constellation and its surroundings
Cercle rouge 100%.svg

Location of ζ Arietis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 03h 14m 54.09731s[1]
Declination +21° 02′ 40.0103″[1]
Apparent magnitude (V) +4.89[2]
Characteristics
Spectral type A1 V[3]
U−B color index –0.01[2]
B−V color index –0.02[2]
Astrometry
Radial velocity (Rv) +7.0[4] km/s
Proper motion (μ) RA: –27.83[1] mas/yr
Dec.: –74.59[1] mas/yr
Parallax (π) 12.44 ± 0.73[1] mas
Distance 260 ± 20 ly
(80 ± 5 pc)
Details
Temperature 9,500[5] K
Rotational velocity (v sin i) 133[6] km/s
Other designations
58 Arietis, BD+20 527, FK5 1089, HD 20150, HIP 15110, HR 972, SAO 75810.[7]

Zeta Arietis (ζ Ari, ζ Arietis) is the Bayer designation for a star in the northern constellation of Aries. It is dimly visible to the naked eye with an apparent visual magnitude of +4.89.[2] Based upon an annual parallax shift of 12.44 mas,[1] the distance to this star is 260 ± 20 light-years (79.7 ± 6.1 parsecs). This is an A-type main sequence star with a stellar classification of A1 V.[3] It has a high rate of rotation with a projected rotational velocity of 133 km/s.[6] The star is shining at an effective temperature of 9,500 K,[5] giving it the characteristic white-hued glow of an A-type star.[8]

Name

This star, along with δ Ari, ε Ari, π Ari, and ρ3 Ari, were Al Bīrūnī's Al Buṭain (ألبطين), the dual of Al Baṭn, the Belly.[9] According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Buṭain were the title for five stars : δ Ari as Botein, π Ari as Al Buṭain I, ρ3 Ari as Al Buṭain II, ε Ari as Al Buṭain III dan ζ Ari as Al Buṭain IV.[10]

In Chinese, 天陰 (Tiān Yīn), meaning Yin Force, refers to an asterism consisting of ζ Arietis, 63 Arietis, δ Arietis, τ Arietis and 65 Arietis.[11] Consequently, ζ Arietis itself is known as 天陰二 (Lóu Su èr, English: the Second Star of Yin Force.)[12]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  2. 2.0 2.1 2.2 2.3 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  3. 3.0 3.1 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  4. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  5. 5.0 5.1 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  6. 6.0 6.1 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  7. "zet Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, retrieved 2012-01-16<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  9. Allen, R. H. (1963), Star Names: Their Lore and Meaning (Reprint ed.), New York, NY: Dover Publications Inc, p. 83, ISBN 0-486-21079-0, retrieved 2010-12-12.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  10. Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), Jet Propulsion Laboratory, California Institute of Technology.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  11. (Chinese) 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.
  12. (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 22 日