47 Bootis
47 Bootis
| Ascension droite | 15h 05m 25,834 64s[1] |
|---|---|
| Déclinaison | +48° 09′ 03,494 3″[1] |
| Constellation | Bouvier |
| Magnitude apparente | 5,581[2] |
Localisation dans la constellation : Bouvier | |
| Stade évolutif | Séquence principale[3] |
|---|---|
| Type spectral | A0 Vs[4] |
| Indice B-V | −0,005 ± 0,003[5] |
| Variabilité | Suspectée[6] |
| Vitesse radiale | −12,63 ± 0,73 km/s[2] |
|---|---|
| Mouvement propre |
μα = −65,912 mas/a[1] μδ = +28,641 mas/a[1] |
| Parallaxe | 12,498 0 ± 0,076 6 mas[1] |
| Distance |
261 ± 2 al (80,0 ± 0,5 pc) |
| Magnitude absolue | 0,97[5] |
| Masse | 2,46 ± 0,02 M☉[3] |
|---|---|
| Rayon | 1,8 R☉[7] |
| Gravité de surface (log g) | 4,32[2] |
| Luminosité |
45,7+2,2 −2,0 L☉[2] |
| Température | 10 130 K[2] |
| Rotation | 54,8 ± 1,6 km/s[2] |
Désignations
47 Bootis, également désignée k Bootis, est une étoile binaire[9] de la constellation du Bouvier, située à 261 ± 2 a.l. (∼ 80 pc) de la Terre.
Références
- (en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « 47 Boötis » (voir la liste des auteurs).
- (en) A. G. A. Brown et al. (Gaia collaboration), « Gaia Data Release 2 : Summary of the contents and survey properties », Astronomy & Astrophysics, vol. 616, , article no A1 (DOI 10.1051/0004-6361/201833051, Bibcode 2018A&A...616A...1G, arXiv 1804.09365).
- (en) F. Royer et al., « Normal A0-A1 stars with low rotational velocities. I. Abundance determination and classification », Astronomy & Astrophysics, vol. 562, , p. 21, article no A84 (DOI 10.1051/0004-6361/201322762, Bibcode 2014A&A...562A..84R, arXiv 1401.2372, S2CID 54511685)
- (en) J. Zorec et F. Royer, « Rotational velocities of A-type stars. IV. Evolution of rotational velocities », Astronomy & Astrophysics, vol. 537, , article no A120 (DOI 10.1051/0004-6361/201117691, Bibcode 2012A&A...537A.120Z, arXiv 1201.2052, S2CID 55586789)
- ↑ (en) H. A. Abt, « Visual multiples. VII. MK classifications », The Astronomical Journal Supplement Series, vol. 45, , p. 437 (DOI 10.1086/190719, Bibcode 1981ApJS...45..437A)
- (en) E. Anderson et Ch. Francis, « XHIP: An extended hipparcos compilation », Astronomy Letters, vol. 38, no 5, , p. 331 (DOI 10.1134/S1063773712050015, Bibcode 2012AstL...38..331A, arXiv 1108.4971, S2CID 119257644)
- ↑ (en) N. N. Samus, O. V. Durlevich et al., « VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013) », VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S, vol. 1, , B/gcvs (Bibcode 2009yCat....102025S)
- ↑ (en) L. E. Pasinetti Fracassini et al., « Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) », Astronomy & Astrophysics, vol. 367, no 2, , p. 521–524 (DOI 10.1051/0004-6361:20000451, Bibcode 2001A&A...367..521P, arXiv astro-ph/0012289, S2CID 425754)
- ↑ (en) k Boo sur la base de données Simbad du Centre de données astronomiques de Strasbourg.
- ↑ (en) P. P. Eggleton et A. A. Tokovinin, « A catalogue of multiplicity among bright stellar systems », Monthly Notices of the Royal Astronomical Society, vol. 389, no 2, , p. 869–879 (DOI 10.1111/j.1365-2966.2008.13596.x, Bibcode 2008MNRAS.389..869E, arXiv 0806.2878, S2CID 14878976)
Liens externes
- Ressource relative à l'astronomie :
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