Fig. 6.
Same as Fig. 4 but for various settings. The photoelectric yield model is the W+06 model. We assume that the dust consists of a mixture of graphite and silicate (50% each in mass) with the MRN size distribution. (a) Different intensities at the Lyman limit of the radiation field: JL/10-21 erg s-1 cm-2 Hz-1 sr-1 = 10 (diamonds), 1 (circles), 0.1 (triangles), and 0.01 (squares). (b) Different temperatures of the gas: T/104 K = 10 (diamonds), 1 (circles), and 0.1 (triangles). Other assumed quantities are noted in the panels. See the caption of Fig. 4 for the notation. The solid lines are the simple formula shown in Eq. (16).