A search for new hot subdwarf stars by means of Virtual Observatory tools

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Fig. 3

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Above: H(NUV₀) against (FUV₀ − NUV₀) for the sample in Fig. 2. Notice the inverted y-axis scale. Below: Only objects fulfilling Eqs. (4) and (5) are plotted (see Sect. 3.2). The red dashed box gives H(NUV₀) selection limits proposed in this work. See text and Table 2 for further details.

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