Pulsation Period Variations in the RRc Lyrae Star KIC 5520878
Authors: Michael Hippke, John G. Learned, A. Zee, William H. Edmondson, John F. Lindner, Behnam Kia, William L. Ditto, and Ian R. Stevens
Hippke et al.
2015 The Astrophysical Journal79842.
Provider: AAS Journals
Caption: Figure 4.
CCD photography centered on KIC 5520878. The Kepler aperture mask of 4 × 4 Kepler pixels (1 px ≈ 3.9 arcsec) is shown as a square. It fully contains the faint uncataloged star, marked with a vertical line.