Study Reveals Long-Sought Secret of the Stars (5 of 5) (video) American Association for the Advancement of Science Share Print E-Mail Loading video... Caption Temperature cross section in the orbital plane. Only temperatures between 4,000 K and 5,000 K are shown, corresponding roughly to the recombination temperature and hence roughly to the location of the photosphere. Note that between ~ 165 and 185 days, lines of sight from an observer looking along the orbital plane do not fully penetrate down to the innermost closed 4,500 K surface: this enlarged photosphere is the main cause of the a plateau phase. Near ~ 185 days, the shroud dissipates and the inner bound merger product would be revealed, corresponding to the decline stage after the plateau. This video relates to a paper that appeared in Jan. 25, 2013, issue of Science, published by AAAS. The paper, by N. Ivanova at the University of Alberta in Edmonton, AB, Canada, and colleagues was titled, "Identification of the Long-Sought Common-Envelope Events." Credit [Video courtesy of James C. Lombardi Jr. using SPLASH (Price 2007)] Usage Restrictions Please cite the owner of the video when publishing. This video may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.