Hubble Space Telescope WFPC2 imaging of XZ Tauri: Time evolution of a Herbig-Haro bow shock

JE Krist, KR Stapelfeldt, CJ Burrows, JJ Hester, AM Watson, GE Ballester, JT Clarke, D Crisp, RW Evans, JS Gallagher, RE Griffiths, JG Hoessel, JA Holtzman, JR Mould, PA Scowen, JT Trauger