UY Scuti: Verskil tussen weergawes

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{{Inligtingskas ster
| naam= UY Scuti
| beeld= UY Scuti size comparison to the sun.png
| beeld=
| onderskrif= UY Scuti se grootte in vergelyking met dié van die Son.
| onderskrif= Digte sterre om die rooisuperreus UY Scuti (die helderste ster op die foto) soos in 2011 gesien vanaf die Rutherfurd-sterrewag in [[New York Stad|New York]], [[Amerika]].
| sterrebeeld= [[Skild (sterrebeeld)|Skild]]
| bayernaam=
| spektraaltipe= M4Ia<ref name="Torres2013" />
| soort=
| RK= {{RK|18|27|36.5334}}<ref name=tycho>{{cite journal |bibcode=1998A&A...335L..65H |title=The TYCHO Reference Catalogue |journal=Astronomy and Astrophysics |volume=335 |pages=L65 |author1=Hog |first1=E. |last2=Kuzmin |first2=A. |last3=Bastian |first3=U. |last4=Fabricius |first4=C. |last5=Kuimov |first5=K. |last6=Lindegren |first6=L. |last7=Makarov |first7=V. V. |last8=Roeser |first8=S. |date=1998}}</ref>
| Dek= {{Dek|-12|27|58.866}}<ref name="tycho" />
| magnitude=
| skynmagnitude= 8,9<ref name=ppm>{{cite journal|bibcode=1994A&AS..105..301R|title=PPM Star Catalogue: The 90000 Stars Supplement|journal=Astronomy and Astrophysics|volume=105|author1=Röser|first1=S.|last2=Bastian|first2=U.|last3=Kuzmin|first3=A.|year=1994}}</ref> - 11.20<ref name="ducati" />
| absolute magnitude= -6,2<ref name=lee>{{cite journal|bibcode=1970ApJ...162..217L|title=Photometry of high-luminosity M-type stars|journal=Astrophysical Journal|volume=162|pages=217|author1=Lee|first1=T. A.|year=1970|doi=10.1086/150648}}</ref>
| B-V = 3,00<ref name=ducati>{{cite journal |bibcode=2002yCat.2237....0D |title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system |journal=CDS/ADC Collection of Electronic Catalogues |volume=2237 |pages=0 |author1=Ducati |first1=J. R. |date=2002}}</ref>
| U-B = 3,29<ref name="Torres2013" />
| massa= 7-10<ref name="Torres2013" />
| radius= 1 708 ± 192<ref name="Torres2013" />
| ligsterkte= 340 000<ref name="Torres2013">{{Cite journal | last1 = Arroyo-Torres | first1 = B. | last2 = Wittkowski | first2 = M. | last3 = Marcaide | first3 = J. M. | last4 = Hauschildt | first4 = P. H. | title = The atmospheric structure and fundamental parameters of the red supergiants AH Scorpii, UY Scuti, and KW Sagittarii | doi = 10.1051/0004-6361/201220920 | journal = Astronomy & Astrophysics | volume = 554 | pages = A76 | year = 2013 | pmid = | pmc = | bibcode = 2013A&A...554A..76A |arxiv = 1305.6179 }}</ref>
| ouderdom=
| temperatuur= 3 365 ± 134<ref name="Torres2013" />
| afstand= 9 500
| veranderlik= Halfreëlmatige [[veranderlike ster]]
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== Naam en geskiedenis ==
UY Scuti is in 1860 die eerste keer opgeteken, deur Duitse sterrekundiges by die [[Bonn]]-sterrewag.<ref name="Universe Guide">{{cite web |title=UY Scuti - Universe Guide |url=https://www.universeguide.com/star/uyscuti |website=Universe Guide |access-date=15 Januarie 2016 |language=en |archive-url=https://web.archive.org/web/20190811145525/https://www.universeguide.com/star/uyscuti |archive-date=11 Augustus 2019 |url-status=live |df=dmy-all}}</ref> Dit is '''BD -12 5055''' genoem: die 5&nbsp;055ste ster tussen 12°S en 13°S vanaf [[regte klimming]] 0h.
 
Met die volgende waarneming van die ster is bevind die helderheid het effens verander, wat daarop gedui het dit is ’n nuwe veranderlike ster. In ooreenstemming met die internasionale naamgewing van veranderlike sterre, is dit UY&nbsp;Scuti genoem: die 38ste veranderlike ster van die sterrebeeld Skild (sien [[Veranderlike ster#Benaming van veranderlike sterre|Benaming van veranderlike sterre]]).<ref>{{cite journal|bibcode=1927KVeBB...1....1P|title=Katalog und Ephemeriden veraenderlicher Sterne fuer 1927|journal=Kleine Veroeffentlichungen der Universitaetssternwarte zu Berlin Babelsberg|volume=1|pages=1.i|author1=Prager|first1=R.|year=1927}}</ref>
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== Eienskappe ==
[[Lêer:Comparison_of_planets_and_stars_Comparison of planets and stars (sheet_by_sheetsheet by sheet)_ (Apr_2015_updateApr 2015 update).png|340px|links|duimnael|Die ster se grootte in vergelyking met dié van ander sterre en die Son.
: {|
| 1. | [[Mercurius (planeet)|Mercurius]] < [[Mars (planeet)|Mars]] < [[Venus (planeet)|Venus]] < [[Aarde]]
|-
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== Supernova ==
Gebaseer op huidige modelle van sterevolusie, het UY&nbsp;Scuti begin met die [[kernfusie|fusie]] van [[helium]] terwyl die fusie van [[waterstof]] om die kern voortduur. Die ster se ligging diep in die Melkweg se skyf dui daarop dat dit waarskynlik [[Metaal (astronomie)|metaalryk]] is.<ref>{{cite book|last1=Israelian|first1=edited by Garik|last2=Meynet|first2=Georges|title=The metal-rich universe|date=2008|publisher=Cambridge University Press|location=Cambridge|isbn=9780521879989978-0-521-87998-9|url=http://www.cambridge.org/asia/catalogue/catalogue.asp?isbn=9780521879989|accessdate=15 Januarie 2016}}</ref>
 
UY&nbsp;Scuti behoort binne die volgende paar miljoen jaar [[litium]], [[koolstof]], [[suurstof]], [[neon]] en [[silikon]] in sy kern te verbrand. Daarna sal sy kern [[yster]] begin vervaardig en eindelik ’n [[supernova|tipe IIb-, IIn- of Ib/Ic-supernova]] veroorsaak.<ref name=groh>{{cite journal |bibcode=2013A&A...558A.131G |title=Fundamental properties of core-collapse supernova and GRB progenitors: Predicting the look of massive stars before death |journal=Astronomy & Astrophysics |volume=558 |pages=A131 |author1=Groh |first1=Jose H. |last2=Meynet |first2=Georges |last3=Georgy |first3=Cyril |last4=Ekström |first4=Sylvia |date=2013 |doi=10.1051/0004-6361/201321906|arxiv = 1308.4681 }}</ref>