Spectra of three objects identified as Hα excess sources using our methodology. The top panel displays the SDSS spectrum, while the middle and bottom panels show LAMOST spectra. The coloured symbols correspond to S-PLUS photometry in flux units for the following filters (from left to right): u, J0378, J0395, J0410, J0430, g, J0515, r, J0660, i, J0861, and z. The square markers represent broadband filters, while the circles denote narrowband filters. According to SIMBAD, the objects in the top and middle panels – SDSS ID J113722.24+014858.5 and LAMOST ID J232551.47-014023.5 – are classified as cataclysmic variables. The bottom panel shows an eclipsing binary star with weak Hα emission (LAMOST ID: J012119.09-001950.0). The dashed line marks the position of the Hα wavelength.