Ground-Based BVRI Follow-Up Observations of the Cepheid V1154 Cyg in Kepler's Field

TL;DR

This paper reports ground-based BVRI follow-up observations of the Cepheid V1154 Cyg in Kepler's field, complementing Kepler's data to better understand the star's properties.

Contribution

It provides the first detailed ground-based optical observations of V1154 Cyg, enhancing the characterization of this Kepler Cepheid.

Findings

Derived basic properties of V1154 Cyg from BVRI data

Complemented Kepler observations with ground-based measurements

Improved understanding of Cepheid variability and characteristics

Abstract

The almost un-interrupted observations from Kepler Space Telescope can be used to search for Earth-size and larger planets around other stars, as well as for stellar variability and asteroseismological study. However, the Kepler's observations are carried out with a single broad-band filter, and ground-based follow-up observations are needed to complement Kepler's light curves to fully characterize the properties of the target stars. Here we present ground-based optical (BVRI) followup observations of V1154 Cyg, the only Cepheid in the Kepler field of view, and deriving basic properties of this star.