Histogram of the K-band magnitudes (Vega) for the catalog of objects derived from our F200W images. The by-design photometric depth of K ∼ 21 is marked with the orange dashed line. The blue histogram is the distribution of magnitudes for our long list candidates, examined further by spectral fitting (see Section 4.1). In orange we show the distribution for objects on the long list with very low signal-to-noise insufficient for a meaningful analysis. Some approximate mass limits are indicated; see the text for details.