février 2013

Anatoly Miroshnichenko publication  "The 2011 Periastron Passage of the Be Binary delta Scorpii" is available on arXiv http://arxiv.org/abs/1302.4021 Many amateurs has contributed to this campaign. 50% of the sepctra are from Amateur, about 300. A lot of questions are still in the air as a third component is possible. So rendez vous in 8 years. Publication in ApJ is scheduled in April. I was particpating to this campaign both at IAC80, with Anatoly, Alberto, Jose for ten days in July 2011, and with my own spectroscpe... [Lire la suite]

OT Gem was detected in outburst during mid 2011 January. See here for details. OT Gem a été vu en outburst durant la mi Janvier 2011. Voir ici Tonight, last OT Gem observation, show that 2011 outburst has ended. Circumstellar disk has vanished after nearly two years of existence. Ce soir la dernière observation montre une fin d'outburst pour OT Gem. Aprés 2 ans, le disque circumstellaire créé par son dernier outburst s'est évaporé. This process occured progressively during the last two years. The circumstellar disk was not... [Lire la suite]