Spitzer Evidence for a Late Heavy Bombardment and the Formation of Urelites in η Corvi at ~1 Gyr

C. M. Lisse, M. C. Wyatt, C. H. Chen +7

We have analyzed Spitzer and NASA/IRTF 2 - 35 \mum spectra of the warm, ~350 K circumstellar dust around the nearby MS star η Corvi (F2V, 1.4 \pm 0.3 Gyr). The spectra show clear e…