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Upsilon Scorpii

October 21, 2023

Not to be confused with U Scorpii.

Upsilon Scorpii (υ Scorpii, abbreviated Upsilon Sco, υ Sco), formally named Lesath /ˈliːsæθ/,[9] is a star located in the "stinger" of the southern zodiac constellation of Scorpius, the scorpion. Based on parallax measurements obtained during the Hipparcos mission, it is approximately 580 light-years from the Sun.[1] In the night sky it lies near the 1.6 magnitude star Lambda Scorpii, and the two form an optical pair that is sometimes called the "Cat's Eyes".[10]

υ Scorpii
Location of υ Scorpii (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scorpius
Right ascension 17h 30m 45.83712s[1]
Declination –37° 17′ 44.9285″[1]
Apparent magnitude (V) 2.70[2]
Characteristics
Spectral type B2 IV[3]
U−B color index –0.854[2]
B−V color index –0.221[2]
Astrometry
Radial velocity (Rv)+8.0[4] km/s
Proper motion (μ) RA: –2.37[1] mas/yr
Dec.: 30.09[1] mas/yr
Parallax (π)5.66 ± 0.18 mas[1]
Distance580 ± 20 ly
(177 ± 6 pc)
Absolute magnitude (MV)−3.53[5]
Details
Mass11.4 ± 0.5[6] M☉
Radius6.1[7] R☉
Luminosity7381[5] L☉
Temperature22,831 ± 169[7] K
Age20.0 ± 2.6[6] Myr
Other designations
Lesath, υ Sco, 34 Sco, 34 Scorpii, CD-37° 11638, HD 158408, HIP 85696, HR 6508, SAO 208896.[8]
Database references
SIMBADdata

Nomenclature Edit

υ Scorpii (Latinised to Upsilon Scorpii) is the star's Bayer designation.

It bore the traditional name Lesath (alternatively spelled Leschath, Lesuth), from the Arabic las'a "pass (or bite) of a poisonous animal"; but this is a miscorrection by Scaliger (a European astronomer who knew Arabic) for earlier "Alascha", which came from Arabic al laţkha "the foggy patch", referring to the nearby open cluster M7. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[11] to catalogue and standardize proper names for stars. The WGSN approved the name Lesath for this star on 21 August 2016 and it is now so included in the List of IAU-approved Star Names.[9]

Together with Lambda Scorpii (Shaula), Lesath is listed in the Babylonian compendium MUL.APIN as dSharur4 u dShargaz, meaning "Sharur and Shargaz".[12] In Coptic, they were called Minamref[13] The indigenous Boorong people of northwestern Victoria named it as Karik Karik (together with Lambda Scorpii),[14] "the Falcons"[15]

In Chinese, 尾宿 (Wěi Xiù), meaning Tail, refers to an asterism consisting of Upsilon, Mu1, Epsilon, Zeta1, Zeta2, Eta, Theta, Iota1, Iota2, Kappa, and Lambda Scorpii.[16] Consequently, the Chinese name for Upsilon Scorpii itself is 尾宿九 (Wěi Xiù jiǔ), "the Ninth Star of Tail".[17]

Namesake Edit

USS Lesuth (AK-125) was a United States Navy Crater class cargo ship named after the star.

Properties Edit

This star has apparent magnitude +2.7[2] and belongs to spectral class B2 IV,[3] with the luminosity class of 'IV' indicating it is a subgiant star. The star's luminosity is 12,300[18] times that of the Sun, while its surface temperature is 22,831[7] kelvins. The star has a radius of 6.1[7] times solar and 11[6] times the mass of the Sun.

References Edit

  1. ^ a b c d e f van Leeuwen, F. (November 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, S2CID 18759600
  2. ^ a b c d Gutierrez-Moreno, Adelina; Moreno, Hugo (June 1968), "A photometric investigation of the Scorpio-Centaurus association", Astrophysical Journal Supplement, 15: 459, Bibcode:1968ApJS...15..459G, doi:10.1086/190168
  3. ^ a b Houk, Nancy; Smith-Moore, M. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H
  4. ^ Wielen, R.; et al. (1999), "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions", Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg, Astronomisches Rechen-Institut Heidelberg, 35 (35): 1, Bibcode:1999VeARI..35....1W
  5. ^ a b 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, S2CID 119257644.
  6. ^ a b c Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x, S2CID 118629873
  7. ^ a b c d Underhill, A. B.; et al. (November 1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", Monthly Notices of the Royal Astronomical Society, 189 (3): 601–605, Bibcode:1979MNRAS.189..601U, doi:10.1093/mnras/189.3.601
  8. ^ "ups Sco -- Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2012-01-01
  9. ^ a b "Naming Stars". IAU.org. Retrieved 18 June 2018.
  10. ^ Schaaf, Fred (2007), The 50 best sights in astronomy and how to see them: observing eclipses, bright comets, meteor showers, and other celestial wonders, John Wiley and Sons, p. 95, Bibcode:2007bsah.book.....S, ISBN 978-0-471-69657-5
  11. ^ IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016.
  12. ^ Rogers, J. H. (February 1998), "Origins of the ancient constellations: I. The Mesopotamian traditions", Journal of the British Astronomical Association, 108 (1): 9–28, Bibcode:1998JBAA..108....9R
  13. ^ Robert Burnham (1978). Burnham's Celestial Handbook: An Observer's Guide to the Universe Beyond the Solar System. Vol. 3. New York: Dover Publication, Inc. p. 1678. ISBN 978-0-486-23673-5.
  14. ^ Hamacher, Duane W.; Frew, David J. (2010). "An Aboriginal Australian Record of the Great Eruption of Eta Carinae". Journal of Astronomical History & Heritage. 13 (3): 220–34. arXiv:1010.4610. Bibcode:2010JAHH...13..220H. doi:10.3724/SP.J.1440-2807.2010.03.06. S2CID 118454721.
  15. ^ Stanbridge, WM (1857). (PDF). Transactions Philosophical Institute Victoria. 2: 137–140. Archived from the original (PDF) on 2013-06-02.
  16. ^ (in 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.
  17. ^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 2008-10-25 at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  18. ^ Kaler, James B., "LESATH (Upsilon Scorpii)", Stars, University of Illinois, retrieved 2012-01-28

October 21, 2023
upsilon, scorpii, confused, with, scorpii, scorpii, abbreviated, upsilon, formally, named, lesath, star, located, stinger, southern, zodiac, constellation, scorpius, scorpion, based, parallax, measurements, obtained, during, hipparcos, mission, approximately, . Not to be confused with U Scorpii Upsilon Scorpii y Scorpii abbreviated Upsilon Sco y Sco formally named Lesath ˈ l iː s ae 8 9 is a star located in the stinger of the southern zodiac constellation of Scorpius the scorpion Based on parallax measurements obtained during the Hipparcos mission it is approximately 580 light years from the Sun 1 In the night sky it lies near the 1 6 magnitude star Lambda Scorpii and the two form an optical pair that is sometimes called the Cat s Eyes 10 y ScorpiiLocation of y Scorpii circled Observation dataEpoch J2000 0 Equinox J2000 0Constellation ScorpiusRight ascension 17h 30m 45 83712s 1 Declination 37 17 44 9285 1 Apparent magnitude V 2 70 2 CharacteristicsSpectral type B2 IV 3 U B color index 0 854 2 B V color index 0 221 2 AstrometryRadial velocity Rv 8 0 4 km sProper motion m RA 2 37 1 mas yr Dec 30 09 1 mas yrParallax p 5 66 0 18 mas 1 Distance580 20 ly 177 6 pc Absolute magnitude MV 3 53 5 DetailsMass11 4 0 5 6 M Radius6 1 7 R Luminosity7381 5 L Temperature22 831 169 7 KAge20 0 2 6 6 MyrOther designationsLesath y Sco 34 Sco 34 Scorpii CD 37 11638 HD 158408 HIP 85696 HR 6508 SAO 208896 8 Database referencesSIMBADdata Contents 1 Nomenclature 1 1 Namesake 2 Properties 3 ReferencesNomenclature Edity Scorpii Latinised to Upsilon Scorpii is the star s Bayer designation It bore the traditional name Lesath alternatively spelled Leschath Lesuth from the Arabic las a pass or bite of a poisonous animal but this is a miscorrection by Scaliger a European astronomer who knew Arabic for earlier Alascha which came from Arabic al laţkha the foggy patch referring to the nearby open cluster M7 In 2016 the International Astronomical Union organized a Working Group on Star Names WGSN 11 to catalogue and standardize proper names for stars The WGSN approved the name Lesath for this star on 21 August 2016 and it is now so included in the List of IAU approved Star Names 9 Together with Lambda Scorpii Shaula Lesath is listed in the Babylonian compendium MUL APIN as dSharur4 u dShargaz meaning Sharur and Shargaz 12 In Coptic they were called Minamref 13 The indigenous Boorong people of northwestern Victoria named it as Karik Karik together with Lambda Scorpii 14 the Falcons 15 In Chinese 尾宿 Wei Xiu meaning Tail refers to an asterism consisting of Upsilon Mu1 Epsilon Zeta1 Zeta2 Eta Theta Iota1 Iota2 Kappa and Lambda Scorpii 16 Consequently the Chinese name for Upsilon Scorpii itself is 尾宿九 Wei Xiu jiǔ the Ninth Star of Tail 17 Namesake Edit USS Lesuth AK 125 was a United States Navy Crater class cargo ship named after the star Properties EditThis star has apparent magnitude 2 7 2 and belongs to spectral class B2 IV 3 with the luminosity class of IV indicating it is a subgiant star The star s luminosity is 12 300 18 times that of the Sun while its surface temperature is 22 831 7 kelvins The star has a radius of 6 1 7 times solar and 11 6 times the mass of the Sun References Edit a b c d e f van Leeuwen F November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 a b c d Gutierrez Moreno Adelina Moreno Hugo June 1968 A photometric investigation of the Scorpio Centaurus association Astrophysical Journal Supplement 15 459 Bibcode 1968ApJS 15 459G doi 10 1086 190168 a b Houk Nancy Smith Moore M 1979 Michigan catalogue of two dimensional spectral types for the HD stars vol 3 Ann Arbor Michigan Dept of Astronomy University of Michigan Bibcode 1982mcts book H Wielen R et al 1999 Sixth Catalogue of Fundamental Stars FK6 Part I Basic fundamental stars with direct solutions Veroeffentlichungen des Astronomischen Rechen Instituts Heidelberg Astronomisches Rechen Institut Heidelberg 35 35 1 Bibcode 1999VeARI 35 1W a b 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 S2CID 119257644 a b c Tetzlaff N Neuhauser R Hohle M M January 2011 A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun Monthly Notices of the Royal Astronomical Society 410 1 190 200 arXiv 1007 4883 Bibcode 2011MNRAS 410 190T doi 10 1111 j 1365 2966 2010 17434 x S2CID 118629873 a b c d Underhill A B et al November 1979 Effective temperatures angular diameters distances and linear radii for 160 O and B stars Monthly Notices of the Royal Astronomical Society 189 3 601 605 Bibcode 1979MNRAS 189 601U doi 10 1093 mnras 189 3 601 ups Sco Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2012 01 01 a b Naming Stars IAU org Retrieved 18 June 2018 Schaaf Fred 2007 The 50 best sights in astronomy and how to see them observing eclipses bright comets meteor showers and other celestial wonders John Wiley and Sons p 95 Bibcode 2007bsah book S ISBN 978 0 471 69657 5 IAU Working Group on Star Names WGSN International Astronomical Union retrieved 22 May 2016 Rogers J H February 1998 Origins of the ancient constellations I The Mesopotamian traditions Journal of the British Astronomical Association 108 1 9 28 Bibcode 1998JBAA 108 9R Robert Burnham 1978 Burnham s Celestial Handbook An Observer s Guide to the Universe Beyond the Solar System Vol 3 New York Dover Publication Inc p 1678 ISBN 978 0 486 23673 5 Hamacher Duane W Frew David J 2010 An Aboriginal Australian Record of the Great Eruption of Eta Carinae Journal of Astronomical History amp Heritage 13 3 220 34 arXiv 1010 4610 Bibcode 2010JAHH 13 220H doi 10 3724 SP J 1440 2807 2010 03 06 S2CID 118454721 Stanbridge WM 1857 On the Astronomy and Mythology of the Aboriginies of Victoria PDF Transactions Philosophical Institute Victoria 2 137 140 Archived from the original PDF on 2013 06 02 in 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 in Chinese 香港太空館 研究資源 亮星中英對照表 Archived 2008 10 25 at the Wayback Machine Hong Kong Space Museum Accessed on line November 23 2010 Kaler James B LESATH Upsilon Scorpii Stars University of Illinois retrieved 2012 01 28 Retrieved from https en wikipedia org w index php title Upsilon Scorpii amp oldid 1170079512, wikipedia, wiki, book, books, library,

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