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Gama Gruis, resmi adı Aldhanab olan güney takımyıldızı Grus'ta bulunan bir yıldızdır (bir zamanlar Batlamyus takımyıldızı Güneybalığı Takımyıldızı'na aitti). Görsel parlaklığı 3,0 kadir olan, Turna'nın üçüncü en parlak yıldızıdır. Paralaks ölçümlerine göre bu yıldız, Güneş'ten yaklaşık 211 ışık yılı (65 parsek) uzaklıkta yer almaktadır.
  Location of γ Gruis (circled) near the center | |
| Gözlem verisi Dönem J2000 Ekinoks J2000 | |
|---|---|
| Takımyıldız | Grus |
| Sağ açıklık | 21sa 53d 55.72620s |
| Dik açıklık | –37° 21′ 53.4790″ |
| Görünür büyüklük (V) | 3.003 |
| Özellikler | |
| Tayfsal sınıf | B8 III or B8IV-Vs |
| U−B renk ölçeği | –0.307 |
| B−V renk ölçeği | –0.121 |
| Astrometri | |
| Dikey hız (Rv) | –2.1 km/s |
| Özdevinim (μ) | RA: +98.07 mys/y Dec.: –13.22 mys/y |
| Iraklık açısı (π) | 15.45 ± 0.67 mys |
| Uzaklık | 211 ± 9 ly (65 ± 3 pc) |
| Mutlak büyüklük (MV) | −1.05 |
| Ayrıntılar | |
| Kütle | 3.06 M☉ |
| Yarıçap | 4.5 R☉ |
| Aydınlatma gücü | 373 L☉ |
| Yüzey kütle çekimi (log g) | 3.79 cgs |
| Sıcaklık | 12,520 K |
| Dönüş | 4.987d |
| Dönüş hızı (v sin i) | 57 km/s |
| Yaş | 75 Milyon yıl |
| Katalog belirtmeleri | |
| Veritabanı kaynakları | |
| SIMBAD | veri |
Kaynakça
- ^ a b c d e f van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2), ss. 653-664, arXiv:0708.1752 $2, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
- ^ a b c d Gutierrez-Moreno, Adelina; Moreno, H.; Stock, J.; Torres, C.; Wroblewski, H. (1966). "A System of photometric standards". Publications of the Department of Astronomy University of Chile. Publicaciones Universidad de Chile, Department de Astronomy. 1: 1-17. Bibcode:1966PDAUC...1....1G.
- ^ Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H
- ^ Gray, R. O.; Garrison, R. F. (1989), "The late A-type stars – Refined MK classification, confrontation with Stromgren photometry, and the effects of rotation", Astrophysical Journal Supplement Series, cilt 70, s. 623, Bibcode:1989ApJS...70..623G, doi:10.1086/191349.
- ^ Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Bibcode:1953GCRV..C......0W.
- ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5), s. 331, arXiv:1108.4971 $2, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
- ^ a b c David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2), s. 146, arXiv:1501.03154 $2, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146.
- ^ Underhill, A. B.; Divan, L.; Prevot-Burnichon, M.-L.; Doazan, V. (November 1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", , 189 (3), ss. 601-605, Bibcode:1979MNRAS.189..601U, doi:10.1093/mnras/189.3.601
- ^ Zorec, J.; Cidale, L.; Arias, M. L.; Frémat, Y.; Muratore, M. F.; Torres, A. F.; Martayan, C. (July 2009), "Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff", Astronomy and Astrophysics, 501 (1), ss. 297-320, arXiv:0903.5134 $2, Bibcode:2009A&A...501..297Z, doi:10.1051/0004-6361/200811147
- ^ Barraza, L. F.; Gomes, R. L.; Messias, Y. S.; Leão, I. C.; Almeida, L. A.; Janot-Pacheco, E.; Brito, A. C.; Brito, F. A. C.; Santana, J. V.; Gonçalves, N. S.; Das Chagas, M. L.; Teixeira, M. A.; De Medeiros, J. R.; Canto Martins, B. L. (2022). "Rotation Signature of TESS B-type Stars. A Comprehensive Analysis". The Astrophysical Journal. 924 (2): 117. arXiv:2202.01022 $2. Bibcode:2022ApJ...924..117B. doi:10.3847/1538-4357/ac3335.
- ^ Royer, F.; Grenier, S.; Baylac, M.-O.; Gómez, A. E.; Zorec, J. (2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i in the northern hemisphere", Astronomy and Astrophysics, 393 (3), ss. 897-911, arXiv:astro-ph/0205255 $2, Bibcode:2002A&A...393..897R, doi:10.1051/0004-6361:20020943
- ^ "gam Gru". SIMBAD. Centre de données astronomiques de Strasbourg. Erişim tarihi: 30 Mart 2007.
- ^ "Naming Stars". IAU.org. 11 Nisan 2020 tarihinde kaynağından . Erişim tarihi: 16 Aralık 2017.
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Gama Gruis resmi adi Aldhanab olan guney takimyildizi Grus ta bulunan bir yildizdir bir zamanlar Batlamyus takimyildizi Guneybaligi Takimyildizi na aitti Gorsel parlakligi 3 0 kadir olan Turna nin ucuncu en parlak yildizidir Paralaks olcumlerine gore bu yildiz Gunes ten yaklasik 211 isik yili 65 parsek uzaklikta yer almaktadir Gama GruisLocation of g Gruis circled near the centerGozlem verisi Donem J2000 Ekinoks J2000Takimyildiz GrusSag aciklik 21sa 53d 55 72620sDik aciklik 37 21 53 4790 Gorunur buyukluk V 3 003OzelliklerTayfsal sinif B8 III or B8IV VsU B renk olcegi 0 307B V renk olcegi 0 121AstrometriDikey hiz Rv 2 1 km sOzdevinim m RA 98 07 mys y Dec 13 22 mys yIraklik acisi p 15 45 0 67 mysUzaklik211 9 ly 65 3 pc Mutlak buyukluk MV 1 05AyrintilarKutle3 06 M Yaricap4 5 R Aydinlatma gucu373 L Yuzey kutle cekimi log g 3 79 cgsSicaklik12 520 KDonus4 987dDonus hizi v sin i 57 km sYas75 Milyon yilKatalog belirtmelerig Gru Gamma Gru 37 9119 FK5 822 30640 HD 207971 HIP 108085 HR 8353 SAO 213374Veritabani kaynaklariSIMBADveriKaynakca a b c d e f van Leeuwen F November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 ss 653 664 arXiv 0708 1752 2 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 a b c d Gutierrez Moreno Adelina Moreno H Stock J Torres C Wroblewski H 1966 A System of photometric standards Publications of the Department of Astronomy University of Chile Publicaciones Universidad de Chile Department de Astronomy 1 1 17 Bibcode 1966PDAUC 1 1G Houk Nancy 1979 Michigan catalogue of two dimensional spectral types for the HD stars 3 Ann Arbor Michigan Dept of Astronomy University of Michigan Bibcode 1982mcts book H Gray R O Garrison R F 1989 The late A type stars Refined MK classification confrontation with Stromgren photometry and the effects of rotation Astrophysical Journal Supplement Series cilt 70 s 623 Bibcode 1989ApJS 70 623G doi 10 1086 191349 Wilson R E 1953 General Catalogue of Stellar Radial Velocities Carnegie Institute Washington D C Publication Bibcode 1953GCRV C 0W a b Anderson E Francis Ch 2012 XHIP An extended hipparcos compilation Astronomy Letters 38 5 s 331 arXiv 1108 4971 2 Bibcode 2012AstL 38 331A doi 10 1134 S1063773712050015 a b c David Trevor J Hillenbrand Lynne A 2015 The Ages of Early Type Stars Stromgren Photometric Methods Calibrated Validated Tested and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal 804 2 s 146 arXiv 1501 03154 2 Bibcode 2015ApJ 804 146D doi 10 1088 0004 637X 804 2 146 Underhill A B Divan L Prevot Burnichon M L Doazan V November 1979 Effective temperatures angular diameters distances and linear radii for 160 O and B stars 189 3 ss 601 605 Bibcode 1979MNRAS 189 601U doi 10 1093 mnras 189 3 601 Zorec J Cidale L Arias M L Fremat Y Muratore M F Torres A F Martayan C July 2009 Fundamental parameters of B supergiants from the BCD system I Calibration of the l 1 D parameters into Teff Astronomy and Astrophysics 501 1 ss 297 320 arXiv 0903 5134 2 Bibcode 2009A amp A 501 297Z doi 10 1051 0004 6361 200811147 Barraza L F Gomes R L Messias Y S Leao I C Almeida L A Janot Pacheco E Brito A C Brito F A C Santana J V Goncalves N S Das Chagas M L Teixeira M A De Medeiros J R Canto Martins B L 2022 Rotation Signature of TESS B type Stars A Comprehensive Analysis The Astrophysical Journal 924 2 117 arXiv 2202 01022 2 Bibcode 2022ApJ 924 117B doi 10 3847 1538 4357 ac3335 Royer F Grenier S Baylac M O Gomez A E Zorec J 2002 Rotational velocities of A type stars in the northern hemisphere II Measurement of v sin i in the northern hemisphere Astronomy and Astrophysics 393 3 ss 897 911 arXiv astro ph 0205255 2 Bibcode 2002A amp A 393 897R doi 10 1051 0004 6361 20020943 gam Gru SIMBAD Centre de donnees astronomiques de Strasbourg Erisim tarihi 30 Mart 2007 Arsivlenmesi gereken baglantiya sahip kaynak sablonu iceren maddeler link Naming Stars IAU org 11 Nisan 2020 tarihinde kaynagindan Erisim tarihi 16 Aralik 2017