Preliminary Photometric Evidence of Starspot Umbrae and Penumbrae on Late-Type Active Stars |
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| Authors: | Sergio Messina Edward F Guinan |
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| Institution: | (1) INAF-Catania Astrophysical Observatory, Via S. Sofia 78, I-95123 Catania, Italy;(2) Dept. of Astronomy and Astrophysics, Villanova Univ., Villanova, 19085, PA, USA |
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| Abstract: | We constrain the properties of the spotted regions on the photosphere of the active late-type star DX Leonis by comparing the observed amplitudes of light and color variations with synthetic amplitudes obtained by means of Dorren's spot model and computed for a grid of values of spot temperatures, areas and latitudes. |
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| Keywords: | Stars: Late-type Stars: Spots Stars: Photometry Stars: DX Leonis |
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