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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
Binary star in the constellation Draco
Zeta Draconis (ζ Draconis , abbreviated Zet Dra , ζ Dra ) is a binary star in the northern circumpolar constellation of Draco . With an apparent visual magnitude of +3.17,[2] fifth-brightest member of this generally faint constellation. Its distance from the Sun has been measured using the parallax technique, yielding an estimate of roughly 330 light-years (100 parsecs ).[1]
The two components are designated Zeta Draconis A (formally named Aldhibah , after the traditional name of the system)[9]
Nomenclature
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ζ Draconis (Latinised to Zeta Draconis ) is the system's Bayer designation . The designations of the two components as Zeta Draconis A and B multiple star systems , and adopted by the International Astronomical Union (IAU).[10]
Zeta Draconis has the old Arabic name الذئب al-dhiʼb "the wolf" or "the hyena", given in its feminine form『Al Dhiʼbah』(ذئبة) in Allen (1899) (though he mistranslated it as plural "hyenas", which would be الضباع al-ḍibāʽ ).[11] al-dhiʼbayn , with Eta Draconis .[12] Nodus III (Third Knot, the knot being a loop in the tail of Draco).[13]
In 2016, the IAU organized a Working Group on Star Names (WGSN)[14] multiple systems .[15] Aldhibah for the component Zeta Draconis A on 5 September 2017. It also approved the name Athebyne for Eta Draconis A on the same date. Both are now so included in the List of IAU-approved Star Names.[9]
Zeta Draconis is mentioned in Hindu texts as Tara who was a celestial goddess married to Lord Brhaspati . A divine epic was played out in the night sky when Lord Chandra , the moon, lusted after and abducted Tara, the blue pole star of Brhaspati, the planet Jupiter . By the completion of the epic Tara gives birth to Lord Budha , or Mercury .[16]
In Chinese , 紫微左垣 Zǐ Wēi Zuǒ Yuán Left Wall of Purple Forbidden Enclosure Iota Draconis , Eta Draconis, Theta Draconis , Upsilon Draconis , 73 Draconis , Gamma Cephei and 23 Cassiopeiae .[17] Chinese name for Zeta Draconis itself is 紫微左垣四 Zǐ Wēi Zuǒ Yuán sì the Fourth Star of Left Wall of Purple Forbidden Enclosure ),[18] 上弼 Shǎngbì The First Minister .[19] Shang Pih by R.H. Allen with meaning "the Higher Minister".[20]
Properties
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Zeta Draconis A is a giant star with a stellar classification of B6 III.[3] larger , 3.5 times more massive , and is radiating 148 times as much luminosity .[6] outer envelope at an effective temperature of nearly 13,400 K [3] azimuthal rotation velocity along the equator is at least 55 km/s.[7]
The north ecliptic pole is located at right ascension 18 h declination +66.5°.[21] Delta Draconis and Zeta Draconis.[22] Venus ; Zeta Draconis is also the north pole star of Jupiter .[23]
References
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^ a b c d Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory , 4 99 ): 99, Bibcode :1966CoLPL...4...99J .
^ a b c d e f Cenarro, A. J.; et al. (2007), "Medium-resolution Isaac Newton Telescope Library of Empirical Spectra – II. The Stellar Atmospheric Parameters", Monthly Notices of the Royal Astronomical Society 374 (2 ): 664–690, arXiv :astro-ph/0611618 Bibcode :2007MNRAS.374..664C , doi :10.1111/j.1365-2966.2006.11196.x S2CID 119428437 .
^ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 , vol. 30, University of Toronto: International Astronomical Union , p. 57, Bibcode :1967IAUS...30...57E .
^ Huang, W.; et al. (2012), "A catalogue of Paschen-line profiles in standard stars", Astronomy & Astrophysics , 547 : A62, arXiv :1210.7893 Bibcode :2012A&A...547A..62H , doi :10.1051/0004-6361/201219804 , S2CID 119286159 .
^ a b c d Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", Astronomy and Astrophysics Supplement Series , 85 3 ): 1015–1019, Bibcode :1990A&AS...85.1015M .
^ a b Royer, F.; et al. (October 2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i", Astronomy and Astrophysics , 393 : 897–911, arXiv :astro-ph/0205255 Bibcode :2002A&A...393..897R , doi :10.1051/0004-6361:20020943 , S2CID 14070763 .
^ "Zet Dra" , SIMBAD , Centre de Données astronomiques de Strasbourg, retrieved 2009-10-10 .
^ a b "Naming Stars" . IAU.org. Retrieved 16 December 2017 .
^ Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A.; Heber, U. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arXiv :1012.0707 astro-ph.SR ].
^ Allen, Richard Hinckley (1899), Star-names and their meanings
^ Rumrill, H. B. (June 1936), "Star Name Pronunciation", Publications of the Astronomical Society of the Pacific , 48 Bibcode :1936PASP...48..139R , doi :10.1086/124681 S2CID 120743052 .
^ Kaler, Jim, "Al Dhibain ("The Posterior")" , Stars , University of Illinois, retrieved 2009-10-12 .
^ "IAU Working Group on Star Names (WGSN)" . Retrieved 22 May 2016 .
^ "WG Triennial Report (2015-2018) - Star Names" (PDF) . p. 5 . Retrieved 2018-07-14 .
^ George Mason Williams (2003). Handbook of Hindu Mythology 91 ISBN 1576071065 . Retrieved 17 July 2015 .
^ (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) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年6 月10 日
^ (in Chinese) English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name Archived August 10, 2010, at the Wayback Machine , Hong Kong Space Museum. Accessed on line November 23, 2010.
^ Star Name - R.H. Allen p. 210
^ Chartrand, Mark R.; Wimmer, Helmut K. (2001), Night Sky: A Guide To Field Identification , Macmillan, p. 12, ISBN 1-58238-126-7
^ Young, Charles Augustus (1919), Anne Sewell Young (ed.), The Elements of Astronomy: a Textbook 69 , retrieved 2009-10-12 .
^ Sharrah, Paul C. (1975). "Pole Stars of Other Planets" (PDF) . Arkansas Academy of Sciences Proceedings . XXIX : 62–63.
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Zeta_Draconis&oldid=1235277228 " C a t e g o r i e s : ● D r a c o ( c o n s t e l l a t i o n ) ● B a y e r o b j e c t s ● B - t y p e g i a n t s ● S t a r s w i t h p r o p e r n a m e s ● H i p p a r c o s o b j e c t s ● F l a m s t e e d o b j e c t s ● B r i g h t S t a r C a t a l o g u e o b j e c t s ● H e n r y D r a p e r C a t a l o g u e o b j e c t s ● D u r c h m u s t e r u n g o b j e c t s ● B i n a r y s t a r s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h C h i n e s e - l a n g u a g e s o u r c e s ( zh ) ● W e b a r c h i v e t e m p l a t e w a y b a c k l i n k s ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a ● A r t i c l e s c o n t a i n i n g C h i n e s e - l a n g u a g e t e x t ● A r t i c l e s c o n t a i n i n g e x p l i c i t l y c i t e d E n g l i s h - l a n g u a g e t e x t
● T h i s p a g e w a s l a s t e d i t e d o n 1 8 J u l y 2 0 2 4 , a t 1 4 : 1 8 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
