It consists of abinary pair designated 19 Tauri A together with a single star visual companion, 19 Tauri B. 'A's' two components are themselves designated 19 Tauri Aa (officially namedTaygeta/teɪˈɪdʒətə/,[11] the traditional name for the entire system)[12] and Ab.
The system bore the traditional nameTaygeta (orTaygete).[14]Taygete was one of thePleiades sisters inGreek mythology. In 2016, the IAU organized aWorking Group on Star Names (WGSN)[15] to catalogue and standardize proper names for stars. The WGSN approved the nameTaygeta for the component 19 Tauri Aa on 21 August 2016 and it is now so included in the List of IAU-approved Star Names.[12]
Taygeta has anapparent magnitude of +4.30 and presents as a blue-whiteB-typesubgiant. It has been used as a standard star for that spectral type.[4] It is aspectroscopic binary, whose component stars have magnitudes of +4.6 and +6.1. They are separated by 0.012arcseconds and complete oneorbit every 1313 days. The subgiant primary is one of just a handful of stars in the young Pleiades cluster that haveevolved away from themain sequence.[3]
The 8th magnitudevisual companion, 19 Tauri B, is 69 arcseconds away. It is thought to be a yellow star somewhat more massive and larger than the Sun, and further away than the Pleiades cluster.[16]
Taygeta was once reported to be variable,[17] but has since been measured to be very nearly constant.[18][19]
^Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".Vizier Online Data Catalog.2237.Bibcode:2002yCat.2237....0D.
^abMazzei, P.; Pigatto, L. (1989). "The Pleiades'age and the sequential star formation".Astronomy and Astrophysics.213.Bibcode:1989A&A...213L...1M.
^Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A.; Heber, U. (2010). "On the naming convention used for multiple star systems and extrasolar planets".arXiv:1012.0707 [astro-ph.SR].
^Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)".VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S.1.Bibcode:2009yCat....102025S.
