Resumen

ZASCHE, P.  y  UHLAR, R.. A Detailed Light Curve Analysis of TY Delphini. Rev. mex. astron. astrofis [online]. 2009, vol.45, n.2, pp.205-214. ISSN 0185-1101.

A detailed light curve analysis of the eclipsing binary TY Del is presented for the first time. The B, V, R, and I light curves were observed and also new minima times have been derived. The secondary minimum has been observed for the first time. The system is probably a detached one with rather unequal components. Eccentricity of the system is still uncertain, but not ruled out. Also the influence of a possible third component is discussed together with a potential apsidal motion. If the hypothesis of apsidal motion is confirmed, it will be the shortest apsidal motion period among eclipsing binaries.

Palabras llave : binaries: close; binaries: eclipsing; stars: fundamental parameters; stars: individual (TY Del).