Table 4
Properties of bright z, Y, and J-dropouts in A2667.
| Source | z phot | χ 2 | zmin − zmax | A V | M 1500 | L 1500 | SFR | z phot | χ 2 | A V | M B | P(z > 6) | ||||
| high-z | ×1041 | low-z | (1) | (2) | (3) | (4) | ||||||||||
| erg/s/cm2 | M⊙/yr | |||||||||||||||
|
|
||||||||||||||||
| z1 (a) | 7.6 | 75.08 | 7.5–7.7 | 0.3 | –23.44 | 13.7 | 144 | 1.78 | 228.27 | 2.4 | –20.06 | 1.0 | 1.0 | 1.0 | 1.0 | (low) |
| (b) | 7.6 | 1.94 | ||||||||||||||
| Y1 (a) | 7.7 | 0.02 | 7.2–7.8 | 2.4 | –23.12 | 10.2 | 108 | 1.72 | 39.62 | 0.3 | –19.82 | 1.0 | 0.0 | 1.0 | 1.0 | low |
| (b) | 7.4 | 1.65 | ||||||||||||||
| Y2 (a) | 8.7 | 0.89 | 7.7–9.3 | 2.4 | –23.53 | 14.9 | 157 | 2.72 | 38.01 | 0.0 | –21.78 | 1.0 | 0.0 | 1.0 | 0.99 | low |
| (b) | 9.1 | 2.11 | ||||||||||||||
| Y3 (a) | 7.5 | 28.68 | 7.3–7.6 | 1.2 | –22.97 | 8.9 | 94 | 1.88 | 72.94 | 0.6 | –20.32 | 1.0 | 0.97 | 1.0 | 0.79 | high |
| (b) | 7.5 | 1.95 | ||||||||||||||
| Y4 (a) | 9.1 | 6.98 | 8.7–9.4 | 1.2 | –23.14 | 10.4 | 110 | 2.58 | 73.71 | 0.0 | –21.13 | 1.0 | 1.0 | 1.0 | 0.99 | high |
| (b) | 9.2 | 2.11 | ||||||||||||||
| Y5 (a) | 8.6 | 10.82 | 7.7–8.8 | 2.1 | –22.97 | 8.9 | 94 | 1.70 | 40.95 | 0.0 | –19.32 | 1.0 | 0.63 | 1.0 | 0.98 | ? |
| (b) | 8.3 | 1.94 | ||||||||||||||
| Y6 (a) | 7.5 | 0.14 | 6.6–7.7 | 1.2 | –22.15 | 4.2 | 44 | 1.94 | 3.64 | 1.50 | –19.74 | 0.94 | 0.0 | 0.55 | 0.46 | low |
| (b) | 7.5 | 1.87 | ||||||||||||||
| Y7 (a) | 9.1 | 0.05 | 8.0–9.4 | 1.8 | –22.90 | 8.3 | 87 | 1.72 | 10.5 | 0.3 | –18.87 | 0.99 | 0.0 | 0.93 | 0.41 | low |
| (b) | 9.2 | 2.11 | ||||||||||||||
| Y8 (a) | 7.4 | 0.02 | 5.9–7.7 | 0.3 | –21.29 | 1.9 | 20 | 1.66 | 0.77 | 0.6 | –18.33 | 0.82 | 0.05 | 0.37 | 0.26 | low |
| (b) | 7.4 | 1.70 | ||||||||||||||
| J1 (a) | 11.9 | 4.93 | 9.6–12.0 | 0.0 | –22.66 | 6.7 | 71 | 2.80 | 12.48 | 0.0 | –20.19 | 1.0 | 0.94 | 0.85 | 0.20 | (low) |
| (b)(c) | 11.8 | 2.50 | ||||||||||||||
Notes. Information given in this table: (Col. 1) object identification; (2, 3, 4, 5, 6, 7, 8) best-fit photometric redshift at high-z, χ2, 1σ confidence interval, best fit AV, magnification corrected M1500, L1500 and SFR from Kennicutt (1998) calibration; (9, 10, 11, 12) best-fit photometric redshift at low-z and corresponding χ2, best fit AV and MB; (13, 14, 15, 16) integrated probability distribution for z > 6, normalized to 1, for different cases based on Bruzual & Charlot models: (1) non-detection rule “1” of Hyperz, (2) the same for a P(z) including a luminosity prior with non-detection rule “2” of Hyperz (where the flux and the error bars are set to Flim/2), and with Flim = 2σ (3) or 3σ (4) detection level in all filters where the candidates are formally not-detected; (17) tentative classification between low and high-z using a luminosity prior. In the case of z1 and J1 (in brackets), the low-z indentification is forced based on the detections in the 24 μm and z850 bands respectively for z1 and J1 (see Sect. 4.6 and Table 2). (a) Standard Hyperz models (local non-detection limits). (b) Complete library including nebular emission (global non-detection limits). (c) Photometric redshift for this source includes the detection in the z850-band.
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