Capella

Capella
Cineál	ilréalta, réalta threorach, RS Canum Venaticorum variable (en) , foinse réaltfhisiceach x-ghathanna, foinse UV, foinse neas-infridhearg, déréalta speictreascópach agus réalta ard-dualghluaisne
Cineál speictreach (réalta)	G3III:
Réaltbhuíon	an tAra
Aois	J2000.0
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan	13 pc
Dearbhmhéid	0.296
Méid dhealraitheach (V)	0.08 (banda V)
Teocht éifeachtach	5,272 K
Saobhdhiallas	76.67 mas
Dualghluaisne (diallas)	−426.89 mas/y
Dualghluaisne (dronairde)	75.25 mas/y
Luas gathach	29.6 km/s
Imtharraingt dromchla	1,400 cm/s²
Dronairde (α)	5h 16m 41.3587s
Diallas (δ)	45° 59′ 52.7693″
Miotalacht	0.18
Cuid de	Winter Hexagon (en)
Catalóga réalteolaíochta
	α Aur (Bayer designation (en) ); ADS 3841 AP (Aitken Double Star Catalogue (en) ); 1RXS J051642.2+460001 (1RXS); 2EUVE J0516+45.9 (The second Extreme Ultraviolet Explorer source catalog (en) ); 2MASS J05164138+4559525 (2MASS); ASCC 317037 (All-sky Compiled Catalogue (en) ); BD+45 1077 (Durchmusterung (en) ); CCDM J05168+4559AP (Catalog of Components of Double and Multiple Stars (en) ); CEL 586 (Celescope Catalogue of Ultraviolet Magnitudes (en) ); CSV 100460 (Catalogue of suspected variable stars (en) ); EUVE J0516+45.9 (The first Extreme Ultraviolet Explorer source catalog (en) ); FK5 193 (FK5 (en) ); GC 6427 (Boss General Catalogue (en) ); GCRV 3121 (General Catalogue of Stellar Radial Velocities (en) ); GJ 194 (Gliese Catalogue of Nearby Stars (en) ); GJ 194 A (Gliese Catalogue of Nearby Stars (en) ); GJ 194 B (Gliese Catalogue of Nearby Stars (en) ); HD 34029 (catalóg Henry Draper); HIC 24608 (Hipparcos Input Catalogue (en) ); HIP 24608 (Hipparcos Catalogue (en) ); HR 1708 (Bright Star Catalogue (en) ); IDS 05093+4554 AP (Index Catalogue of Visual Double Stars (en) ); IRAS 05130+4556 (IRAS); IRC +50139 (Two-Micron Sky Survey (en) ); JP11 1010 (JP11 (en) ); LSPM J0516+4559 (LSPM-NORTH catalog (en) ); LTT 11619 (Luyten Two-Tenths catalogue (en) ); N30 1121 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) ); NLTT 14766 (New Luyten Two-Tenths catalogue (en) ); NSV 1897 (New Catalogue of Suspected Variable Stars (en) ); PLX 1187 (General Catalogue of Trigonometric Stellar Parallaxes (en) ); PMC 90-93 139 (Tokyo Photoelectric Meridian Circle Catalog (en) ); PPM 47925 (PPM Star Catalogue (en) ); RAFGL 713 (The Revised AFGL (RAFGL) catalogue (en) ); SAO 40186 (Smithsonian Astrophysical Observatory Star Catalog (en) ); TD1 4244 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) ); TYC 3358-3141-1 (Tycho Catalogue (en) ); UBV 5009 (UBV Photoelectric Photometry Catalogue (en) ); uvby98 100034029 (uvbyβ Photoelectric Photometric Catalogue (en) ); WDS J05167+4600A (Washington Double Star Catalog (en) ); WDS J05167+4600Aa,Ab (Washington Double Star Catalog (en) ); YPAC 23 (Yunnan Photoelectric Astrolabe Catalogue (en) ); SBC9 306 (Eighth catalogue of the orbital elements of spectroscopic binary systems (en) ); Ci 20 321 (Catalogue of proper motion stars (en) ); SBC7 214 (Seventh catalogue of the orbital elements of spectroscopic binary systems (en) ); RX J0516.7+4559 (X-ray survey of the Large Magellanic Cloud by ROSAT (en) ); PMSC 05093+4553AB (MSC - a catalogue of physical multiple stars (en) ); WEB 4762 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); 13 Aur (Flamsteed designation (en) ); TIC 368326352 (TESS Input Catalog (en) ); AAVSO 0509+45 (AAVSO (en) ); AG+45 512 (AGK3U (en) )

Is é Capella an réalta is gile sa réaltbhuíon thuaidh Auriga agus an séú réalta is gile i spéir na hoíche ag teacht tar éis Vega. Tá méid radharcach de 0.08 aige agus dearbhmhéid de 0.296. Níl Capella ina réalta amháin ach ina chóras réaltach de cheithre réaltaí ina bhfuil dhá chúpla dénártha. Tá sa chéad chúpla dhá réaltaí ollmhóra de chineál -G a nglaoitear Capella Aa agus Capella Ab ortha. Tá siad i bhfithis an ghearr de chianfhad 0.76 Aonaid Réalteolaíochtacha (A.R.) as a chéile agus le tréimhse fithiseach de 104 lá.

S’é Capella Aa an ceann níos gile den bheirt le rang speictreach G8III (G8 fathach) cé go bhfuil Ab giota beag níos lú agus é sa rang G0III (G0 fathach). Tá mais ag Aa a bhfuil níos mó faoi 3.05 ná sin den Ghrian agus ag Ab níos mó faoi 2.57. Tá a gcorplár de bhreosla hidrigineach caite ag a mbeirt acu agus rinneadh réaltaí ollmhóra díobh ach níl sé follasach go fóill cé'n áit go beacht a bhfuil siad ar an slí éabhlóideach réaltach. Ar chianfhad de 10,000 A.R. ón chéad chúpla tá an bheirt réaltaí eile le fail agus iad ina dhá abhac dearg, lag, beag agus go measartha fionnuar. Tugtar Capella H agus Capella L dóibh. Tá a lán réaltaí eile a bhfuil Capella mar ainm acu ó Capella C go dtí Capella G agus ó I go dtí K ach níl siad gaolta le chéile ach go bhfuil siad go léir sa réimse radharcach céanna. Tá an córas Capella go measartha in aice láithreach ar chianfhad nach bhfuil ach 42.8 solasbhlianta.

Tagairtí

↑ "The Perkins catalog of revised MK types for the cooler stars" (as Béarla) (Deireadh Fómhair 1989): 245–266. doi:10.1086/191373.
↑ ^2.0 ^2.1 "Accurate masses and radii of normal stars: modern results and applications" (as Béarla) (7 Deireadh Fómhair 2009) (1-2): 67-126. doi:10.1007/S00159-009-0025-1.
↑ "UBVRIJKL photometry of the bright stars" (1966): 99.
↑ ^4.0 ^4.1 ^4.2 Eva Grebel (11 Feabhra 2016). "SP_Ace: a new code to derive stellar parameters and elemental abundances" (as Béarla): 2–2. doi:10.1051/0004-6361/201526758.
↑ ^5.0 ^5.1 ^5.2 ^5.3 Floor van Leeuwen (2007). "Validation of the new Hipparcos reduction" (as Béarla) (2): 653–664. doi:10.1051/0004-6361:20078357.
↑ Katia Cunha (14 Bealtaine 2004). "S⁴N: A spectroscopic survey of stars in the solar neighborhood" (as Béarla) (1): 183-205. doi:10.1051/0004-6361:20035801.

[2dd30115e1174925caf24778b003777fcff50e85-1] "The Perkins catalog of revised MK types for the cooler stars" (as Béarla) (Deireadh Fómhair 1989): 245–266. doi:10.1086/191373.

[3635522da952e579d343d9144bbad0cacb6d870d-2] 2.0 ^2.1 "Accurate masses and radii of normal stars: modern results and applications" (as Béarla) (7 Deireadh Fómhair 2009) (1-2): 67-126. doi:10.1007/S00159-009-0025-1.

[07f49564723d532ce84e5fcab972ca048c0fef47-3] "UBVRIJKL photometry of the bright stars" (1966): 99.

[f350fa64e27781821e7ee675bea312a302060c6b-4] 4.0 ^4.1 ^4.2 Eva Grebel (11 Feabhra 2016). "SP_Ace: a new code to derive stellar parameters and elemental abundances" (as Béarla): 2–2. doi:10.1051/0004-6361/201526758.

[8edd049ced48440d6882cc10b733308727e81acc-5] 5.0 ^5.1 ^5.2 ^5.3 Floor van Leeuwen (2007). "Validation of the new Hipparcos reduction" (as Béarla) (2): 653–664. doi:10.1051/0004-6361:20078357.

[507a6cef3b93b9eabc53633109f8048543747851-6] Katia Cunha (14 Bealtaine 2004). "S⁴N: A spectroscopic survey of stars in the solar neighborhood" (as Béarla) (1): 183-205. doi:10.1051/0004-6361:20035801.

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