Image Details
Caption: Figure 1.
Mosaic of 5'' × 50 Å boxes (spatial—horizontal, wavelength—vertical) of the sample of SELs (single-emission-line without blue continuum) sources in the 10h (COSMOS) field. A flux of F = 10 −17 erg s −1 cm −2, a natural limit for narrow-band photometric studies, is easily reached with these data, at the ~10σ level. A flux of F = 3 × 10 −18 erg s −1 cm −2 is detected at the ~3σ–4σ level. The number of sources rises rapidly with decreasing flux, as described in the text. Strong artifacts (e.g., cosmic rays, bad pixels, and sky subtraction problems) have been blanked out in some cases.
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