text: HV 905 is an example of the “bump” variety of these objects.
full_question: HV 905 is an example of the “bump” variety of these objects. Light curves for these objects can have characteristic “sawtooth” or “shark-fin” shapes. Some of the Type II variety of these objects are named for W Virginis and typically have periods between 10 and 20 days with spectral class between F6 and K2. The opacity of these objects unusually increases with their temperature in the kappa mechanism. A relationship between the period and luminosity of these standard candles was first identified by Henrietta Swan Leavitt. For 10 points, name these variable stars named after a King of Jaffa.
first_sentence: HV 905 is an example of the “bump” variety of these objects.