History of Variable Stars (Abstract)

Volume 38 number 2 (2010)

Rafael Girola

Nestor Vinet

Abstract

(Abstract only) Within the field of history of variable stars, we have focused on the history of Cepheid stars. Using graphics, we will describe historical evolutive behavior and its characteristics stressing on the Period Luminosity relation , and in consequence the importance of the research made by Miss Leavitt during the 20th century. We also will present and introduction to Fuzzy logic. For that purpose, we will show examples of its application in different disciplines such as biology, industrial processes, and electronics. In this work we will leave open the possibility of applying this mathematical concept in the field of variable star classification, when the observer facing the traditional models meets the dilemma of decision.