The shape of these star's luminosity curves is referred to as a "shark fin."
The shape of these star's luminosity curves is referred to as a "shark fin." Edward Hubble used these stars to determine that the Andromeda nebula was not part of the Milky Way. With their less luminous cousins, the RR Lyrae stars, these stellar objects lie in the instability strip. While cataloging stars in the Small Magellanic Cloud, Henrietta Leavitt discovered the period- luminosity relationship of these objects. For 10 points, name these variable stars, which are often used as standard candles to work out the distance to different astronomical objects.
The shape of these star's luminosity curves is referred to as a "shark fin."
{Cepheid} variable stars [prompt on {variable} stars before it is read]