Article Title: Period Analysis of Seven Field ab-type RR Lyrae Stars Based on O − C Diagrams: Cyclic Variations and Long-term Period Changes
Journal Title: The Astrophysical Journal
Article Type: paper
Copyright Information: © 2018. The American Astronomical Society. All rights reserved.
Publication dates
Date Received: 2017-11-28
Date Accepted: 2018-07-10
Online publication date: 2018-08-20