Mal:Stjerneinfo/Vega

Vega
	; Et infrarødt bilde av støvskiven rundt Vega.
	Observasjonsdata; Epoke J2000.0
Rektascensjon	18t 36m 56.33635s
Deklinasjon	+38° 47′ 01.2802″
Tilsynelatende; størrelsesklasse (V)	0.03
	Karakteristikk
Spektralklasse	A0V
Fargeindeks U–B	−0.01
Fargeindeks B–V	+0.00
	Astrometri
Radialhastighet (Rv)	−13.9 ± 0.9 km/s
Egenbevegelse (μ)	RA: 200.94 mas/år; DEK: 286.23 mas/år
Parallakse (π)	130.23 ± 0.36 mas
Avstand	25,04 ± 0,07 ly ; (7,68 ± 0,02 pc)
Absolutt størrelsesklasse (MV)	0.58
	Detaljer
Masse	2.135 ± 0.074 M☉
Radius	2.26 × 2.78 R☉
Overflategravitasjon; (log g)	4.1 & 0.1
Luminositet	37 ± 3 L☉
Temperatur	9602 ± 180 K
Vinkelhastighet	12.5 t
	Kart
	; Vegas beliggenhet i stjernebildet Lyren
	Andre betegnelser
	Wega, Lucida Lyrae, Alpha Lyrae, α Lyrae, 3 Lyr, GJ 721, HR 7001, BD +38°3238, HD 172167, GCTP 4293.00, LTT 15486, SAO 67174, HIP 91262, 织女一

Noter og referanser[rediger kilde]

Noter

^ For tilsynelatende størrelsesklassse m og parallakse π, er den absolutte størrelsesklassen M_v gitt av:
${\begin{smallmatrix}M_{v}\ =\ m+5(\log _{10}{\pi }+1)\ =\ 0.03+5(\log _{10}{0.12893}+1)\ =\ 0.58.\end{smallmatrix}}$
Se: Tayler, Roger John (1994), The Stars: Their Structure and Evolution, Cambridge University Press, s. 16, ISBN 0-521-45885-4

Referanser

^ ^a ^b ^c ^d ^e 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
^ ^a ^b ^c ^d Staff, «V* alf Lyr – Variable Star», SIMBAD (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=vega, besøkt 2007-10-30 —use the "display all measurements" option to show additional parameters.
^ Morgan, W. W.; Keenan, P. C. (1973), «Spectral Classification», Annual Review of Astronomy and Astrophysics 11: 29, Bibcode 1973ARA&A..11...29M, DOI:10.1146/annurev.aa.11.090173.000333
^ Fernie, J. D. (1981), «On the variability of Vega», Astronomical Society of the Pacific 93 (2): 333–337, Bibcode 1981PASP...93..333F, DOI:10.1086/130834
^ Evans, D. S. (June 20–24, 1966), «The Revision of the General Catalogue of Radial Velocities», Proceedings from IAU Symposium no. 30, London, England: Academic Press, s. 57, Bibcode 1967IAUS...30...57E
^ Yoon, Jinmi m. fl.. (January 2010), «A New View of Vega's Composition, Mass, and Age», The Astrophysical Journal 708 (1): 71–79, Bibcode 2010ApJ...708...71Y, DOI:10.1088/0004-637X/708/1/71
^ ^a ^b ^c Aufdenberg, J.P. m. fl.. (2006), «First results from the CHARA Array: VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star?», Astrophysical Journal 645 (1): 664–675, arXiv:astro-ph/0603327, Bibcode 2006ApJ...645..664A, DOI:10.1086/504149
^ Kinman, T.; Castelli, F. (2002), «The determination of T_eff for metal-poor A-type stars using V and 2MASS J, H and K magnitudes», Astronomy and Astrophysics 391 (3): 1039–1052, Bibcode 2002A&A...391.1039K, DOI:10.1051/0004-6361:20020806
^ Allen, Richard Hinckley (1963), Star Names: Their Lore and Meaning, Courier Dover Publications, ISBN 0486210790
^ Kendall, E. Otis (1845), Uranography: Or, A Description of the Heavens; Designed for Academics and Schools; Accompanied by an Atlas of the Heavens, Philadelphia: Oxford University Press

[amsmag_v-6] For tilsynelatende størrelsesklassse m og parallakse π, er den absolutte størrelsesklassen M_v gitt av:
${\begin{smallmatrix}M_{v}\ =\ m+5(\log _{10}{\pi }+1)\ =\ 0.03+5(\log _{10}{0.12893}+1)\ =\ 0.58.\end{smallmatrix}}$
Se: Tayler, Roger John (1994), The Stars: Their Structure and Evolution, Cambridge University Press, s. 16, ISBN 0-521-45885-4

[aaa474_2_653-1] 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

[SIMBAD-2] Staff, «V* alf Lyr – Variable Star», SIMBAD (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=vega, besøkt 2007-10-30 —use the "display all measurements" option to show additional parameters.

[araa11_29-3] Morgan, W. W.; Keenan, P. C. (1973), «Spectral Classification», Annual Review of Astronomy and Astrophysics 11: 29, Bibcode 1973ARA&A..11...29M, DOI:10.1146/annurev.aa.11.090173.000333

[asp93_2_333-4] Fernie, J. D. (1981), «On the variability of Vega», Astronomical Society of the Pacific 93 (2): 333–337, Bibcode 1981PASP...93..333F, DOI:10.1086/130834

[rgcrv1966-5] Evans, D. S. (June 20–24, 1966), «The Revision of the General Catalogue of Radial Velocities», Proceedings from IAU Symposium no. 30, London, England: Academic Press, s. 57, Bibcode 1967IAUS...30...57E

[apj708_1_71-7] Yoon, Jinmi m. fl.. (January 2010), «A New View of Vega's Composition, Mass, and Age», The Astrophysical Journal 708 (1): 71–79, Bibcode 2010ApJ...708...71Y, DOI:10.1088/0004-637X/708/1/71

[apj645_1_664-8] Aufdenberg, J.P. m. fl.. (2006), «First results from the CHARA Array: VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star?», Astrophysical Journal 645 (1): 664–675, arXiv:astro-ph/0603327, Bibcode 2006ApJ...645..664A, DOI:10.1086/504149

[aaa391_3_1039-9] Kinman, T.; Castelli, F. (2002), «The determination of T_eff for metal-poor A-type stars using V and 2MASS J, H and K magnitudes», Astronomy and Astrophysics 391 (3): 1039–1052, Bibcode 2002A&A...391.1039K, DOI:10.1051/0004-6361:20020806

[allen1963-10] Allen, Richard Hinckley (1963), Star Names: Their Lore and Meaning, Courier Dover Publications, ISBN 0486210790

[kendall1845-11] Kendall, E. Otis (1845), Uranography: Or, A Description of the Heavens; Designed for Academics and Schools; Accompanied by an Atlas of the Heavens, Philadelphia: Oxford University Press

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