Table 10
Spectral-index statistics for various QSO samples: the BAL and non-BAL QSO samples presented in this paper (“BAL”, “non-BAL”), the BAL QSO sample presented in MM08, and the comparison QSO sample from Vigotti et al. (1997, 1999).
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| N | min | max | median | mean | std | N | min | max | median | mean | std | |||
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| BAL | 25 | −3.55 | 0.34 | −0.62 | −0.71 | 0.72 | 20 | −2.20 | 0.25 | −0.92 | −0.86 | 0.64 | ||
| BAL+MM08 | 37 | −3.55 | 0.76 | −0.62 | −0.66 | 0.70 | 32 | −2.20 | 0.25 | −0.93 | −0.93 | 0.54 | ||
| non-BAL | 33 | −1.14 | 0.63 | −0.49 | −0.39 | 0.43 | 30 | −1.47 | 0.34 | −0.87 | −0.74 | 0.50 | ||
| B3-VLA QSOs1 (<2.3′′) | 40 | −1.38 | 0.54 | −0.65 | −0.57 | 0.47 | – | – | – | – | – | – | ||
| B3-VLA QSOs1 (all) | 123 | −2.23 | 0.54 | −0.89 | −0.79 | 0.45 | – | – | – | – | – | – | ||
Notes. The spectral index for this sample is
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