Spot topography of BD+22o 4409 (LO Peg) using Matrix Light-curve Inversion

Details Spot topography of BD+22o 4409 (LO Peg) using Matrix Light-curve Inversion Spot topography of BD+22o 4409 (LO Peg) using Matrix Light-curve Inversion

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1410h&link_type=abstract

American Astronomical Society Meeting 205, #14.10; Bulletin of the American Astronomical Society, Vol. 36, p.1361

Astronomy and Astrophysics

Astronomy

Scientific paper

We present maps of starspot distributions for the rapidly rotating K dwarf BD+22o4409 (LO Peg), based on BVRI light curves obtained from CCD images aquired in September 2004. The Matrix Light-curve Inversion technique used to invert the light curves is advantageous in that it makes no a priori assumptions as to the number of spots or their shapes. The use of multicolor photometry improves the latitude resolution by taking advantage of the differences in the limb darkening in the various filter passbands. Doppler imaging reported in 1999 by Lister, et al. based on August 1993 data indicated cool features at both high and low latitudes. We report the present spot configuration based on our data.

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