Starspots on LO Pegasi, May-July 2010

Details Starspots on LO Pegasi, May-July 2010 Starspots on LO Pegasi, May-July 2010

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734208h&link_type=abstract

American Astronomical Society, AAS Meeting #217, #342.08; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present surface maps of LO Pegasi based on BVRI light curves obtained during May-July 2010 via differential aperture photometry performed on CCD images acquired at Perkins Observatory. The light curves were processed through a light-curve inversion algorithm which makes no a priori assumptions regarding the number of starspots or their shapes. In addition to mapping the surface, we found that the rotational period during this interval was P = 10.153 h, which differs by 1.7% from the nominal value P = 10.17±0.8 h found by Lister et al. 1999, MNRAS, 307, 685. We speculate that this may represent an effect of differential rotation of the stellar surface layers.
This work was supported by the NSF REU Program and the Ohio Wesleyan University Summer Science Research Program.

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