40 Bootis
40 Bootis
| Ascension droite | 14h 59m 36,947 45s[1] |
|---|---|
| Déclinaison | +39° 15′ 55,199 4″[1] |
| Constellation | Bouvier |
| Magnitude apparente | 5,64[2] |
Localisation dans la constellation : Bouvier | |
| Type spectral | F1 III-IV[3] |
|---|---|
| Indice B-V | 0,336 ± 0,004[2] |
| Vitesse radiale | +12,3 ± 0,7 km/s[4] |
|---|---|
| Mouvement propre |
μα = −32,109 mas/a[1] μδ = 41,246 mas/a[1] |
| Distance |
166,5 ± 0,6 al (51,0 ± 0,2 pc) |
| Magnitude absolue | 2,08[2] |
| Masse | 1,47 M☉[5] |
|---|---|
| Rayon |
2,35+0,34 −0,13 R☉[1] |
| Gravité de surface (log g) | 3,88[5] |
| Luminosité | 11,585 ± 0,054 L☉[1] |
| Température | 7 070 ± 240 K[5] |
| Métallicité | −0,29[4] |
| Rotation | 72,5 km/s[6] |
| Âge | 1,166 Ga[5] |
Désignations
40 Bootis (en abrégé 40 Boo) est une étoile[8] de la constellation du Bouvier, située à 166,5 années-lumière de la Terre.
Références
- (en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « 40 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). Notice Gaia DR2 pour cette source sur VizieR.
- (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) S. Boro Saikia et al., « Chromospheric activity catalogue of 4454 cool stars. Questioning the active branch of stellar activity cycles », Astronomy & Astrophysics, vol. 616, , article no A108 (DOI 10.1051/0004-6361/201629518, Bibcode 2018A&A...616A.108B, arXiv 1803.11123, S2CID 118915212)
- (en) L. Casagrande et al., « New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey », Astronomy & Astrophysics, vol. 530, , article no A138 (DOI 10.1051/0004-6361/201016276, Bibcode 2011A&A...530A.138C, arXiv 1103.4651, S2CID 56118016)
- (en) Trevor J. David et Lynne A. Hillenbrand, « The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets », The Astronomical Journal, vol. 804, no 2, , p. 146 (DOI 10.1088/0004-637X/804/2/146, Bibcode 2015ApJ...804..146D, arXiv 1501.03154, S2CID 33401607)
- ↑ (en) C. Schröder, Ansgar Reiners et Jürgen H. M. M. Schmitt, « Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo », Astronomy & Astrophysics, vol. 493, no 3, , p. 1099–1107 (DOI 10.1051/0004-6361:200810377, Bibcode 2009A&A...493.1099S, lire en ligne [PDF])
- ↑ (en) * 40 Boo -- High Proper Motion Star 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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