Serbian Astronomical Journal 2007 Issue 175, Pages: 51-56
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Monitoring active stars 29 Dra, 12 Cam and colour excess of II Peg

Zboril M.

We present the BV light curves analysis of late-type, long-period stars 29 Dra, 12 Cam for the season 2005/2006, and shorter-period star II Peg for the same season. High latitude spots (alternatively spot configuration) cooler than surrounding photosphere were able to explain the light curves. The II Peg colour- index shift in H-R diagram is probably a consequence of stellar metallicity. Other associated mechanisms are briefly discussed.

Keywords: stars: late type, starspots, stars individual: 29 Dra, 12 Cam, II Peg

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