Sirius : triple star ?
Deep infrared image around Sirius
Animation showing the interaction of a third body orbiting Sirius. The animation illustrates the possible effect of a third body with a long period (2500 yr) orbit. The tidal interaction during the close encounter at the passage of the object in the inner part of its orbit could cause a temporary cloud expansion that will result in a temporary reddening during a few centuries as observed for Sirius. Lire la suite...
Droits réservés : Frédéric Durillon (www.animea.com)
F. Durillon, 29-09-2008