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Table 1.

Selection of Hα candidates sample.

Criterion N
With 0.37 ≤ zspec ≤ 0.42 4
With 0.30 ≤ zphot ≤ 0.50 108
Selected by colour 32
Selected by narrow-band excess 27
Selected by appearance 31
TOTAL 202

Notes. Column 1: criterion used for the selection of the candidate. Column 2: number of candidates selected with that criterion. Some objects may have been selected by more than one criterion but they are only included in one category, following the order of the list from top to bottom.

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