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> There is no doubt that this star has considerably brightened. > > In the middle 90s I used to visually monitor a dozen SDOR and SDOR suspects in the LMC. > > Perhaps this is one of the fainter ones undergoing an episode similar to the eta Car (19th century) event? > > What do you think? Less likely. An SDOR-type outburst should occur in a normally blue (high temperature) object, not on a normally G star. There is clear astrophysical explanation for such an "optical" brightening of an SDOR-type star (and fading in rho Cas, as a recent example of a different class of a massive mass-loss event). In addition to spectroscopy, accurate astrometry and secure identification of the field is highly desirable -- a nova would explain the observation more naturally, if the true quiescent object is much fainter. Regards, Taichi Kato
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
