Next: 3. Final, or late Up: 2. Stars and circumstellar Previous: 1. Wolf-Rayet stars
Van Genderen started writing a review paper on S Dor variables (or luminous blue variables) which will include an inventory of these objects in the Galaxy and the Magellanic Clouds. The goal is amongst others to summarize the scientific achievements in the 20th century on S Dor variables, emphasizing on the photometric results of the various types of instabilities and the investigation of the structure of the S Dor area on the HR-diagram. The current list contains 34 confirmed S Dor variables and a number of candidates, with their various physical and photometric parameters.
Sterken, Freyhammer, Arentoft (Brussels) and van Genderen reported and discussed the steady brightening of Car in 1998 and 1999 and concluded that this is not an eruption, but a so-called ``S Dor phase'' of the central S Dor star (hided in the nebula).
This is a phase in which the star moves temporarily to the red on the HR-diagram.