The Unique Eclipsing System KH 15D: Photometry

摘要

We present results of photometric observations of the young eclipsing binary KH 15D obtained during three observing seasons of 2002-2005. A comparison of our data with data from the literature reveals the existence of the long-term photometrical brightness trend: during 4.5 years a system brightness in the I_c-band decreased by about one stellar magnitude.