Fig. 5
Teff − log g diagram of the HW Vir systems. The solid lines are evolutionary tracks by Dorman et al. (1993) for an sdB mass of 0.471, 0.473, and 0.475 M⊙. The positions of J1622 and J0820 are indicated with crosses. The other squares mark the position of other HW Vir-like systems (Van Grootel et al. 2013a; Drechsel et al. 2001; For et al. 2010; Geier et al. 2011d; Maxted et al. 2002; Klepp & Rauch 2011; Østensen et al. 2008, 2010; Wood & Saffer 1999; Almeida et al. 2012; Barlow et al. 2013). The open dots represent other sdB binaries from the literature.
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