Surface Imaging of HIP 106231 via Light Curve Inversion

Details Surface Imaging of HIP 106231 via Light Curve Inversion Surface Imaging of HIP 106231 via Light Curve Inversion

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..osf..p005r&link_type=abstract

American Physical Society, Ohio Section of the APS Fall Meeting, October 13-14, 2006, abstract #P.005

Physics

Scientific paper

The star HIP 106231 (LO Pegasi) was observed with the intention of mapping its starspots. Starspots, similar to sunspots on the Sun, are dark areas on the surface of a star caused by intense magnetic fields. CCD images of HIP 106231 and the surrounding star field were obtained using an 8-inch Meade Schmidt-Cassegrain Telescope in conjunction with a Santa Barbara Instruments Group ST-8E CCD Camera and CFW8 filter wheel. Aperture photometry was used to create light curves (i.e. plots of brightness vs. time) for the B, V, R and I photometric filters. The light curves were analyzed via Light Curve Inversion, which is a technique that produces an image of the starspots based on the variations in the star's brightness they produce as they rotate into and out of view of Earth. We present a map which indicates the presence of a mid-latitude spot or projection from a polar spot.

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