1.5k citations · 11.1k across the 121 of their papers we have counts for
1 paper · 1 filter
L. Deharveng, A. Zavagno, L. Salas +3
The HII regions Sh 217 and Sh 219 are textbook examples of a Stromgren sphere surrounded by an annular photodissociation region (PDR). The annular PDR is observed in both the 21 cm…