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Zeta Aquilae

March 14, 2023

Zeta Aquilae, or ζ Aquilae, is a binary star[10] system in the equatorial constellation of Aquila. It is readily visible with the naked eye, being of the third magnitude.[2] Based on parallax measurements obtained during the Hipparcos mission, it is approximately 83 light-years (25 parsecs) distant from the Sun.[1] It is a candidate member of the TW Hydrae association of co-moving stars.[12]

ζ Aquilae
Location of ζ Aquilae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 05m 24.60802s[1]
Declination +13° 51′ 48.5182″[1]
Apparent magnitude (V) 2.983[2]
Characteristics
Spectral type A0 Vn[3]
U−B color index +0.080[2]
B−V color index +0.009[2]
Astrometry
Radial velocity (Rv)−25[4] km/s
Proper motion (μ) RA: −0.25[1] mas/yr
Dec.: –95.56[1] mas/yr
Parallax (π)39.28 ± 0.16 mas[1]
Distance83.0 ± 0.3 ly
(25.5 ± 0.1 pc)
Absolute magnitude (MV)+0.96[5]
Details
A
Mass2.37[6] M☉
Radius2.27[7] R☉
Luminosity39.4[7] L☉
Surface gravity (log g)4.17[8] cgs
Temperature9,620±20[7] K
Metallicity [Fe/H]−0.52±0.04[5] dex
Rotational velocity (v sin i)317[9] km/s
Age100±50[7] Myr
B
Mass0.50[10] M☉
Other designations
Okab (primary), Zeta Aql, ζ Aql, 17 Aql, BD+13 3899, FK5 716, GJ 4095, HD 177724, HIP 93747, HR 7235, SAO 104461, WDS J19054+1352A[11]
Database references
SIMBADdata

Zeta Aquilae's two components can be designated Zeta Aquilae A (officially named Okab /ˈoʊkæb/, the traditional name for the system)[13] and B. Zeta Aquilae has a number of companions listed and together they are designated WDS J19054+1352. As the primary star of this group, Zeta Aquilae also bears the designation WDS J19054+1352A.[11] The companions are then designated WDS J19054+1352B, C, D and E.[14][15][16][17]

Nomenclature

ζ Aquilae, Latinised to Zeta Aquilae, is the binary's Bayer designation. The designations of the two components as Zeta Aquilae A and B derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).[18] WDS J19054+1352 is the entry of the wider system of which Zeta Aquilae is a member in the Washington Double Star Catalog.

Zeta and Epsilon Aquilae together bore the traditional name Deneb el Okab, from an Arabic term ذنب العقاب Dhanab al-ʽuqāb "the tail of the eagle", which they mark (Aquila is Latin for 'eagle').[19] In 2016, the IAU organized a Working Group on Star Names (WGSN)[20] to catalog and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.[21] It approved the name Okab for the component Zeta Aquilae A on 1 June 2018 and it is now so included in the List of IAU-approved Star Names.[13]

Epsilon and Zeta Aquilae also bore the Mandarin names Woo /ˈwuː/ and Yuë /ˈjuːeɪ/, derived from and representing the old states Wú (吳) (located at the mouth of the Yangtze River) and Yuè (越) (in Zhejiang province).[19][22]

In the catalogue of stars in the Calendarium of Al Achsasi Al Mouakket, Zeta Aquilae was designated Dzeneb al Tair (from the Arabic ذنب الطائر ðanab aṭ-ṭā’ir), which was translated into Latin as Cauda (Vulturis) Volantis, meaning the eagle's tail.[23]

In Chinese, 天市左垣 (Tiān Shì Zuǒ Yuán), meaning Left Wall of Heavenly Market Enclosure, refers to an asterism which represents eleven old states in China and is marking the left borderline of the enclosure, consisting of Zeta Aquilae; Delta, Lambda, Mu, Omicron and 112 Herculis; Theta¹ and Eta Serpentis; Nu Ophiuchi, Xi Serpentis and Eta Ophiuchi.[24] Consequently, the Chinese name for Zeta Aquilae itself is 天市左垣六 (Tiān Shì Zuǒ Yuán liù, English: the Sixth Star of Left Wall of Heavenly Market Enclosure), representing the state mentioned above.[25]

Properties

The primary, designated component A, has a stellar classification of A0 Vn,[3] with the luminosity class 'V' indicating is a main sequence star that is generating energy through the nuclear fusion of hydrogen at its core. It has more than double the mass and twice the radius of the Sun,[6][7] and is radiating more than 39 times the Sun's luminosity.[7] The effective temperature of the star's outer envelope is about 9620 K,[7] which gives it the white hue typical of A-type stars. The estimated age of this star is 50–150 million years.[6]

This star is rotating rapidly, with a projected rotational velocity of 317 km s−1 giving a lower bound on the azimuthal velocity along the equator.[9] As a result, it has a pronounced equatorial bulge, causing the star to assume an oblate spheroidal shape. The equatorial radius is about 30.7% greater than the polar radius.[6] Because of the Doppler effect, this rapid rotation makes the absorption lines in the star's spectrum broaden and smear out, as indicated by the 'n' suffix in the stellar class.

Astronomers use Zeta Aquilae as a telluric standard star.[26] That is, the spectrum of this star is used to correct for telluric contamination from the Earth's atmosphere when examining the spectra of neighboring stars.[27] Observation of this star in the infrared band during the 2MASS survey appeared to reveal excess emission. However, the distribution of this emission couldn't be readily explained by a conjectured disk of circumstellar dust.[6] Instead, the detection was later ascribed to errors caused by saturation of the near-infrared detectors.[7]

Companions

The primary forms a binary star system with component B.[10] This is a magnitude 12.0 star at an angular separation of 7.20″ along a position angle of 46°, as of 2009.[28] The pair have a projected separation of 185.1 AU. The secondary has an estimated mass equal to one half the mass of the Sun.[10] The 16th magnitude star WDS J19054+1352E is also considered to be a co-moving companion with a mass of 0.14 M☉, at a projected separation of 38,000 AU from the primary.[10]

The Washington Double Star Catalog lists a second 12th magnitude star at 160" (WDS J19054+1352C) plus an 11th magnitude star separated by 200" (WDS J19054+1352D).[28] The Catalog of Components of Double and Multiple Stars lists the two 12th magnitude companions at 6.5" and 160".[29]

References

  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; et al. (1966), "A System of photometric standards", Publ. Dept. Astron. Univ. Chile, Publicaciones Universidad de Chile, Department de Astronomy, 1: 1–17, Bibcode:1966PDAUC...1....1G
  3. ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
  4. ^ 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. Determination of Radial Velocities and Their Applications. Vol. 30. University of Toronto: International Astronomical Union. p. 57. Bibcode:1967IAUS...30...57E.
  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 d e Absil, O.; et al. (September 2008), "A near-infrared interferometric survey of debris disc stars. II. CHARA/FLUOR observations of six early-type dwarfs", Astronomy and Astrophysics, 487 (3): 1041–1054, arXiv:0806.4936, Bibcode:2008A&A...487.1041A, doi:10.1051/0004-6361:200810008, S2CID 11864220
  7. ^ a b c d e f g h Plavchan, Peter; et al. (June 2009), "New Debris Disks Around Young, Low-Mass Stars Discovered with the Spitzer Space Telescope", The Astrophysical Journal, 698 (2): 1068–1094, arXiv:0904.0819, Bibcode:2009ApJ...698.1068P, doi:10.1088/0004-637X/698/2/1068, S2CID 51417657
  8. ^ 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
  9. ^ a b Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298
  10. ^ a b c d e De Rosa, R. J.; et al. (2014), "The VAST Survey - III. The multiplicity of A-type stars within 75 pc", Monthly Notices of the Royal Astronomical Society, 437 (2): 1216–1240, arXiv:1311.7141, Bibcode:2014MNRAS.437.1216D, doi:10.1093/mnras/stt1932.
  11. ^ a b "zet Aql -- Star in double system", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2018-06-26
  12. ^ Nakajima, Tadashi; Morino, Jun-Ichi (2012), "Potential Members of Stellar Kinematic Groups within 30 pc of the Sun", The Astronomical Journal, 143 (1): 2, Bibcode:2012AJ....143....2N, doi:10.1088/0004-6256/143/1/2.
  13. ^ a b "Naming Stars". IAU.org. Retrieved 18 June 2018.
  14. ^ "UGPS J190524.98+135153.8 -- Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2018-06-26
  15. ^ "GSC 01052-01167 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2018-06-26
  16. ^ "TYC 1052-1996-1 -- Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2018-06-26
  17. ^ "UCAC3 208-200112 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2018-06-26
  18. ^ 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].
  19. ^ a b Allen, Richard Hinckley (1963) [1899]. Star Names: Their Lore and Meaning (Reprint ed.). New York, NY: Dover Publications Inc. p. 61. ISBN 0-486-21079-0.
  20. ^ "IAU Working Group on Star Names (WGSN)". Retrieved 22 May 2016.
  21. ^ "WG Triennial Report (2015-2018) - Star Names" (PDF). p. 5. Retrieved 2018-07-14.
  22. ^ (in Chinese) English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name August 10, 2010, at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  23. ^ Knobel, E. B. (June 1895). "Al Achsasi Al Mouakket, on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket". Monthly Notices of the Royal Astronomical Society. 55 (8): 429–438. Bibcode:1895MNRAS..55..429K. doi:10.1093/mnras/55.8.429.
  24. ^ (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.
  25. ^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 September 29, 2009, at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  26. ^ Kiss, László L.; Vinkó, József (May 2000), "A photometric and spectroscopic study of the brightest northern Cepheids - III. A high-resolution view of Cepheid atmospheres", Monthly Notices of the Royal Astronomical Society, 314 (2): 420–432, arXiv:astro-ph/9912438, Bibcode:2000MNRAS.314..420K, doi:10.1046/j.1365-8711.2000.03375.x, S2CID 17851967
  27. ^ Niessen, P. E. (2008). "Quantitative spectroscopy with the UVES". In Kaufer, Andreas; Kerber, Florian (eds.). The 2007 ESO Instrument Calibration Workshop: Proceedings of the ESO Workshop Held in Garching, Germany, 23-26 January 2007. Eso Astrophysics Symposia. Springer. pp. 365–374. ISBN 978-3-540-76962-0.
  28. ^ a b Mason, Brian D; Wycoff, Gary L; Hartkopf, William I; Douglass, Geoffrey G; Worley, Charles E (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.
  29. ^ Dommanget, J; Nys, O (1994). "Catalogue des composantes d'etoiles doubles et multiples (CCDM) premiere edition - Catalogue of the components of double and multiple stars (CCDM) first edition". Com. De l'Observ. Royal de Belgique. 115: 1. Bibcode:1994CoORB.115....1D.

External links

  • Image Zeta Aquilae

March 14, 2023
zeta, aquilae, aquilae, binary, star, system, equatorial, constellation, aquila, readily, visible, with, naked, being, third, magnitude, based, parallax, measurements, obtained, during, hipparcos, mission, approximately, light, years, parsecs, distant, from, c. Zeta Aquilae or z Aquilae is a binary star 10 system in the equatorial constellation of Aquila It is readily visible with the naked eye being of the third magnitude 2 Based on parallax measurements obtained during the Hipparcos mission it is approximately 83 light years 25 parsecs distant from the Sun 1 It is a candidate member of the TW Hydrae association of co moving stars 12 z AquilaeLocation of z Aquilae circled Observation dataEpoch J2000 Equinox J2000Constellation AquilaRight ascension 19h 05m 24 60802s 1 Declination 13 51 48 5182 1 Apparent magnitude V 2 983 2 CharacteristicsSpectral type A0 Vn 3 U B color index 0 080 2 B V color index 0 009 2 AstrometryRadial velocity Rv 25 4 km sProper motion m RA 0 25 1 mas yr Dec 95 56 1 mas yrParallax p 39 28 0 16 mas 1 Distance83 0 0 3 ly 25 5 0 1 pc Absolute magnitude MV 0 96 5 DetailsAMass2 37 6 M Radius2 27 7 R Luminosity39 4 7 L Surface gravity log g 4 17 8 cgsTemperature9 620 20 7 KMetallicity Fe H 0 52 0 04 5 dexRotational velocity v sin i 317 9 km sAge100 50 7 MyrBMass0 50 10 M Other designationsOkab primary Zeta Aql z Aql 17 Aql BD 13 3899 FK5 716 GJ 4095 HD 177724 HIP 93747 HR 7235 SAO 104461 WDS J19054 1352A 11 Database referencesSIMBADdataZeta Aquilae s two components can be designated Zeta Aquilae A officially named Okab ˈ oʊ k ae b the traditional name for the system 13 and B Zeta Aquilae has a number of companions listed and together they are designated WDS J19054 1352 As the primary star of this group Zeta Aquilae also bears the designation WDS J19054 1352A 11 The companions are then designated WDS J19054 1352B C D and E 14 15 16 17 Contents 1 Nomenclature 2 Properties 2 1 Companions 3 References 4 External linksNomenclature Editz Aquilae Latinised to Zeta Aquilae is the binary s Bayer designation The designations of the two components as Zeta Aquilae A and B derive from the convention used by the Washington Multiplicity Catalog WMC for multiple star systems and adopted by the International Astronomical Union IAU 18 WDS J19054 1352 is the entry of the wider system of which Zeta Aquilae is a member in the Washington Double Star Catalog Zeta and Epsilon Aquilae together bore the traditional name Deneb el Okab from an Arabic term ذنب العقاب Dhanab al ʽuqab the tail of the eagle which they mark Aquila is Latin for eagle 19 In 2016 the IAU organized a Working Group on Star Names WGSN 20 to catalog and standardize proper names for stars The WGSN decided to attribute proper names to individual stars rather than entire multiple systems 21 It approved the name Okab for the component Zeta Aquilae A on 1 June 2018 and it is now so included in the List of IAU approved Star Names 13 Epsilon and Zeta Aquilae also bore the Mandarin names Woo ˈ w uː and Yue ˈ juː eɪ derived from and representing the old states Wu 吳 located at the mouth of the Yangtze River and Yue 越 in Zhejiang province 19 22 In the catalogue of stars in the Calendarium of Al Achsasi Al Mouakket Zeta Aquilae was designated Dzeneb al Tair from the Arabic ذنب الطائر danab aṭ ṭa ir which was translated into Latin as Cauda Vulturis Volantis meaning the eagle s tail 23 In Chinese 天市左垣 Tian Shi Zuǒ Yuan meaning Left Wall of Heavenly Market Enclosure refers to an asterism which represents eleven old states in China and is marking the left borderline of the enclosure consisting of Zeta Aquilae Delta Lambda Mu Omicron and 112 Herculis Theta and Eta Serpentis Nu Ophiuchi Xi Serpentis and Eta Ophiuchi 24 Consequently the Chinese name for Zeta Aquilae itself is 天市左垣六 Tian Shi Zuǒ Yuan liu English the Sixth Star of Left Wall of Heavenly Market Enclosure representing the state mentioned above 25 Properties EditThe primary designated component A has a stellar classification of A0 Vn 3 with the luminosity class V indicating is a main sequence star that is generating energy through the nuclear fusion of hydrogen at its core It has more than double the mass and twice the radius of the Sun 6 7 and is radiating more than 39 times the Sun s luminosity 7 The effective temperature of the star s outer envelope is about 9620 K 7 which gives it the white hue typical of A type stars The estimated age of this star is 50 150 million years 6 This star is rotating rapidly with a projected rotational velocity of 317 km s 1 giving a lower bound on the azimuthal velocity along the equator 9 As a result it has a pronounced equatorial bulge causing the star to assume an oblate spheroidal shape The equatorial radius is about 30 7 greater than the polar radius 6 Because of the Doppler effect this rapid rotation makes the absorption lines in the star s spectrum broaden and smear out as indicated by the n suffix in the stellar class Astronomers use Zeta Aquilae as a telluric standard star 26 That is the spectrum of this star is used to correct for telluric contamination from the Earth s atmosphere when examining the spectra of neighboring stars 27 Observation of this star in the infrared band during the 2MASS survey appeared to reveal excess emission However the distribution of this emission couldn t be readily explained by a conjectured disk of circumstellar dust 6 Instead the detection was later ascribed to errors caused by saturation of the near infrared detectors 7 Companions Edit The primary forms a binary star system with component B 10 This is a magnitude 12 0 star at an angular separation of 7 20 along a position angle of 46 as of 2009 28 The pair have a projected separation of 185 1 AU The secondary has an estimated mass equal to one half the mass of the Sun 10 The 16th magnitude star WDS J19054 1352E is also considered to be a co moving companion with a mass of 0 14 M at a projected separation of 38 000 AU from the primary 10 The Washington Double Star Catalog lists a second 12th magnitude star at 160 WDS J19054 1352C plus an 11th magnitude star separated by 200 WDS J19054 1352D 28 The Catalog of Components of Double and Multiple Stars lists the two 12th magnitude companions at 6 5 and 160 29 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 et al 1966 A System of photometric standards Publ Dept Astron Univ Chile Publicaciones Universidad de Chile Department de Astronomy 1 1 17 Bibcode 1966PDAUC 1 1G a b Cowley A et al April 1969 A study of the bright A stars I A catalogue of spectral classifications Astronomical Journal 74 375 406 Bibcode 1969AJ 74 375C doi 10 1086 110819 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 Determination of Radial Velocities and Their Applications Vol 30 University of Toronto International Astronomical Union p 57 Bibcode 1967IAUS 30 57E 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 d e Absil O et al September 2008 A near infrared interferometric survey of debris disc stars II CHARA FLUOR observations of six early type dwarfs Astronomy and Astrophysics 487 3 1041 1054 arXiv 0806 4936 Bibcode 2008A amp A 487 1041A doi 10 1051 0004 6361 200810008 S2CID 11864220 a b c d e f g h Plavchan Peter et al June 2009 New Debris Disks Around Young Low Mass Stars Discovered with the Spitzer Space Telescope The Astrophysical Journal 698 2 1068 1094 arXiv 0904 0819 Bibcode 2009ApJ 698 1068P doi 10 1088 0004 637X 698 2 1068 S2CID 51417657 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 amp AS 85 1015M a b Royer F Zorec J Gomez A E February 2007 Rotational velocities of A type stars III Velocity distributions Astronomy and Astrophysics 463 2 671 682 arXiv astro ph 0610785 Bibcode 2007A amp A 463 671R doi 10 1051 0004 6361 20065224 S2CID 18475298 a b c d e De Rosa R J et al 2014 The VAST Survey III The multiplicity of A type stars within 75 pc Monthly Notices of the Royal Astronomical Society 437 2 1216 1240 arXiv 1311 7141 Bibcode 2014MNRAS 437 1216D doi 10 1093 mnras stt1932 a b zet Aql Star in double system SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2018 06 26 Nakajima Tadashi Morino Jun Ichi 2012 Potential Members of Stellar Kinematic Groups within 30 pc of the Sun The Astronomical Journal 143 1 2 Bibcode 2012AJ 143 2N doi 10 1088 0004 6256 143 1 2 a b Naming Stars IAU org Retrieved 18 June 2018 UGPS J190524 98 135153 8 Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2018 06 26 GSC 01052 01167 High proper motion Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2018 06 26 TYC 1052 1996 1 Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2018 06 26 UCAC3 208 200112 High proper motion Star SIMBAD Centre de Donnees astronomiques de Strasbourg retrieved 2018 06 26 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 a b Allen Richard Hinckley 1963 1899 Star Names Their Lore and Meaning Reprint ed New York NY Dover Publications Inc p 61 ISBN 0 486 21079 0 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 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 Knobel E B June 1895 Al Achsasi Al Mouakket on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket Monthly Notices of the Royal Astronomical Society 55 8 429 438 Bibcode 1895MNRAS 55 429K doi 10 1093 mnras 55 8 429 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 September 29 2009 at the Wayback Machine Hong Kong Space Museum Accessed on line November 23 2010 Kiss Laszlo L Vinko Jozsef May 2000 A photometric and spectroscopic study of the brightest northern Cepheids III A high resolution view of Cepheid atmospheres Monthly Notices of the Royal Astronomical Society 314 2 420 432 arXiv astro ph 9912438 Bibcode 2000MNRAS 314 420K doi 10 1046 j 1365 8711 2000 03375 x S2CID 17851967 Niessen P E 2008 Quantitative spectroscopy with the UVES In Kaufer Andreas Kerber Florian eds The 2007 ESO Instrument Calibration Workshop Proceedings of the ESO Workshop Held in Garching Germany 23 26 January 2007 Eso Astrophysics Symposia Springer pp 365 374 ISBN 978 3 540 76962 0 a b Mason Brian D Wycoff Gary L Hartkopf William I Douglass Geoffrey G Worley Charles E 2001 The 2001 US Naval Observatory Double Star CD ROM I The Washington Double Star Catalog The Astronomical Journal 122 6 3466 Bibcode 2001AJ 122 3466M doi 10 1086 323920 Dommanget J Nys O 1994 Catalogue des composantes d etoiles doubles et multiples CCDM premiere edition Catalogue of the components of double and multiple stars CCDM first edition Com De l Observ Royal de Belgique 115 1 Bibcode 1994CoORB 115 1D External links EditImage Zeta Aquilae Retrieved from https en wikipedia org w index php title Zeta Aquilae amp oldid 1079520431, wikipedia, wiki, book, books, library,

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