The UV - optical - near-IR emission of BL Lacertae objects.
Results from UV, optical and near-IR simultaneous observations for 11 BL Lac objects are reported. The authors find that for all but one source the spectral flux distribution can be described by a single power law (fν ∝ ν-α) plus, where relevant, the contribution of the host galaxy. The comparison of the optical-near-IR and UV spectral indices for
Falomo, R. et al.
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1994