Program: GN-2006B-DD-5

Recently a youthful Sun-like (G0V) star, BD+20 307 was discovered by our team with a tremendous amount of hot dust (650K). Its high dust temperature indicates that dust is located within 1 AU, well inside the terrestrial planetary zone. With fractional dust luminosity tau~4% at >~300 Myr age, BD+20 307 has the implied mass of its asteroid belt >10,000 times the mass of our Sun?s asteroid belt (under a steady state model). Song et al. (2005) suggested that the dust in this > 300Myr old star was produced in some recent gigantic cosmic collisions such as planet-planet collisions. BD+20 307 provided the first observational evidence of ?Heavy Bombardment? around youthful Sun-like stars. In this program, we will take a 10micron spectrum of another young Sun analog in the Pleaides cluster with huge amount of warm dust.