Frost's research focused on the determination of
radial velocity using stellar spectroscopy and
spectroscopic binaries. In 1902, he discovered the strange behavior of
Beta Cephei, which later became the prototype for
Beta Cephei variable stars. He played a significant role in bringing
Otto Struve to the
United States, when the latter was living as an impoverished refugee in
Turkey after the
Russian Revolution. He later supported the appointment of Struve as his successor as director of Yerkes Observatory.
Asteroid 854 Frostia is named in his honor, as is the lunar crater
Frost, on the far side of the Moon. ==References==