Proposal Information

Name:
Aliz Derekas
Title:
A radial velocity survey of candidate binary Cepheids
Project Description:
We are studying pulsations and possible binarity of yellow supergiant stars, called Cepheids, by measuring periodic changes in spectrum. These variations trace both atmospheric and orbital motions, which will be used to deduce masses of the studied stars. Our observations should also provide a new test of the astronomical distance scale that is based on Cepheid variables.