A Photometric Study of Starspot Evolution on HIP 106231

Details A Photometric Study of Starspot Evolution on HIP 106231 A Photometric Study of Starspot Evolution on HIP 106231

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.2906h&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #29.06; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

HIP 106231 (LO Pegasi) is a single K8 young solar analog with a 10.17-hour rotation period. Prior Doppler imaging and photometric studies have established the presence of a polar spot with projections down to middle latitudes. BVRI CCD images of the star were obtained on the nights of July 16, 17 and 18 and August 3, 5 and 6, 2006. Aperture photometry was performed to generate light curves. The light curves were inverted to produce surface maps via an algorithm which makes no a priori assumptions regarding the number of spots or their shapes. We present maps illustrating spot evolution over the observation period.

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