Infrared photometric diagrams for sources measured toward the SMCB2-H ii complex. See Table 2 for uncertainties. a) J − H versus H − K. The blue line is the main sequence isochrone for stars of 1.4 Myr old, and the red line shows the loci of red giants aged 10 Gyr. The black solid line is the reddening vector up to A_V = 5 mag. The red empty circles correspond to YSO candidates selected using the Whitney et al. (2008) criterion and the blue filled triangles correspond to the Bolatto et al. (2007) criterion (see Sect. 3.5.1). Stars 170, 172, and 173, which are components of the compact H ii N26 or star 169, are indicated, as well as the object 169, which is the integration of the three mentioned components. b) J − H versus K − L. The colors and symbols are the same as those used in panel a). The solid line is the reddening vector up to A_V = 15 mag. c) IRAC [8.0] versus [4.5]–[8.0]. Same colors and symbols as in a). (See electronic edition of the journal for a color version of this figure.)