Photometric Imaging of Starspots on LO Pegasi in May, June and July of 2009

Details Photometric Imaging of Starspots on LO Pegasi in May, June and July of 2009 Photometric Imaging of Starspots on LO Pegasi in May, June and July of 2009

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541809h&link_type=abstract

American Astronomical Society, AAS Meeting #215, #418.09; Bulletin of the American Astronomical Society, Vol. 42, p.275

Astronomy and Astrophysics

Astronomy

Scientific paper

CCD images of the K8 young solar analog LO Pegasi were obtained during May, June and July of 2009 through B, V, R, and I photometric filters at Perkins Observatory. Differential aperture photometry was performed on the images to generate light curves through each filter. The lightcurves were processed via the Light-Curve Inversion algorithm so as to invert the light curves to produce images of the star's photosphere. The locations of the starspots visible in the 2009 images are at lower latitudes than those deduced from the summer 2008 light curves. In addition, secular dimming since 2008 implies that there is a spot on the visible pole, which does not appear in our images because it does not significantly modulate the rotational light curve.

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