Physical parameters of the Algol system TZ Eridani from simultaneous analysis of Geneva 7-colour light curves

Abstract

Light curves of the semi-detached eclipsing binary system TZ Eridani in the Geneva 7-colour photometric system were analysed using the Wilson-Devinney programme. The physical and orbital parameters have been determined through a self-consistent simultaneous solution of the seven light curves and of the radial velocity curves of both components. The following absolute elements of the components are, for the primary (mass gainer), , 0.03 , , K, and for the secondary (mass loser), , , , 100 K. The semi-major axis A of the relative orbit is 0.16 . The regular increase of the period is described. The spectral type of the components are A5/6 V (primary) and K0/1 III. The secondary has exhibited a long-term luminosity increase of about 0.06 in V between Dec. 1983 and Dec. 1996. The distance to TZ Eri is evaluated to 270 ± 12 pc.

Locations

• Astronomy and Astrophysics Supplement Series - View - PDF
• arXiv (Cornell University) - View - PDF
• Springer Link (Chiba Institute of Technology) - View - PDF