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Photometric study of the binary system NN Del |
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| Authors: | JM Gómez-Forrellad F Sánchez-Bajo M Corbera-Subirana E GarcÍa-Melendo J Vidal-Sainz |
| Institution: | (1) Grup d'Estudis Astronomics, Apartado 9481, 08080 Barcelona, Spain E-mail;(2) Departamento de Electrónica e Ingeniería Electromecánica, Escuela de Ingenierías Industriales, Universidad de Extremadura, Ctra de Elvas s/n, 06071 Badajoz, Spain; E-mail;(3) Departament d'Informàtica i Matemàtica, Escola Politècnica Superior, Universitat de Vic, Laura 13, 08500 Vic, Barcelona, Spain; E-mail;(4) Grup d'Estudis Astronomics, Apartado 9481, 08080 Barcelona, Spain E-mail |
| Abstract: | We present the results of the differential V light curve analysis of NN Del. We show that NN Del is an EA eclipsing binary system with a period of 99.27 days and a highly eccentric orbit. Photometric solutions obtained using the Russell and the Wilson-Devinney models seem to indicate that both components are very similar in radii and luminosities (assuming a F5 spectral type). Constraints imposed on the V luminosity of the system by the HIPPARCOS data suggest that the components of the system could be subgiants instead of main sequence stars. This revised version was published online in July 2006 with corrections to the Cover Date. |
| Keywords: | variable stars eclipsing binaries light curve analysis |
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