CBA Center for Backyard Astrophysics



MM Hydrae: One of the Last PGs Cries Wolf

MM Hya figure

After about a year of sporadic looking, we finally found MM Hya in outburst at V = 13.8 on 1998 March 8. Another exploding (well, gulping, anyway) star for Jonathan. Over the first four nights it declined by about 0.13 mag/night, and 84.5 minute superhumps were consistently seen. Here is our best stretch of light curve so far, spliced from observations by Dave Harvey, Tonny Vanmunster, and Lasse Jensen. The mean light level has been subtracted (this ususally helps in the period analysis). Rudolf Novak also has several nights in the pipeline. Clear weather in Europe and Arizona has made this star a winner!