Stellar twins determine the distance of the Pleiades

Abstract : Since the release of the Hipparcos catalog in 1997, the distance to the Pleiades open cluster has been heavily debated. The distance obtained from Hipparcos and those by alternative methods differ by 10 to 15 %. As accurate stellar distances are key to understanding stellar structure and evolution, this dilemma puts the validity of stellar evolution models into question. Using our model-independent method to determine parallaxes based on twin stars, we report individual parallaxes of 15 FGK type stars in the Pleiades in anticipation of the astrometric mission Gaia. These parallaxes give a mean cluster parallax of $7.42\pm0.09~\mathrm{mas}$ corresponding to a mean cluster distance of ${ 134.8\pm 1.7~\mathrm{pc}}$. This value agrees with the current results obtained from stellar evolution models.
Type de document :
Article dans une revue
Astronomy and Astrophysics - A&A, EDP Sciences, 2016, 595, pp.id.A59. <10.1051/0004-6361/201629091>
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01358279
Contributeur : Marie-Paule Pomies <>
Soumis le : mercredi 31 août 2016 - 14:08:17
Dernière modification le : mercredi 22 mars 2017 - 09:21:19

Identifiants

Collections

Citation

Thomas, Mädler, Paula, Jofré, Gerard, Gilmore, C. Clare, Worley, C. Soubiran, et al.. Stellar twins determine the distance of the Pleiades. Astronomy and Astrophysics - A&A, EDP Sciences, 2016, 595, pp.id.A59. <10.1051/0004-6361/201629091>. <hal-01358279>

Partager

Métriques

Consultations de la notice

29