|
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. |