[HTML][HTML] The photoevaporation of interstellar clouds. I-Radiation-driven implosion

F Bertoldi�- Astrophysical Journal, Part 1 (ISSN 0004-637X), vol�…, 1989 - adsabs.harvard.edu
In this and a subsequent paper we develop an approximate analytical solution for the
evolution of an interstellar neutral cloud which is exposed to the ionizing radiation of a newly
formed star. Generalizing the historic work by Oort, Spitzer, and Kahn, the structure of a
steady photoevaporation gas flow off a spherical