Testing the blazar sequence with the least luminous BL Lacertae objects
- C. M. Raiteri
- A. Capetti
DOIAbstract
In a previous paper, we proposed a new method to select low-power BL Lacs (LPBLs) based on mid-infrared emission and flux contrast through the Ca II spectral break; that study led to the selection of a complete sample formed by 34 LPBLs with 0.05 <z ≤ 0.15 and radio luminosities spanning the range log Lr = 39.2–41.5 [erg s-1]. We now assemble the broadband spectral energy distributions (SEDs) of these sources to investigate their nature and compare them with brighter BL Lacs. We find that the ratios between the X-ray and radio luminosities range from ~20 to ~30 000 and that the synchrotron peak frequencies span a wide energy interval, from log νpeak ~ 13.5 to ~20 [Hz]. This indicates a broad variety of SED shapes and a mixture of BL Lac fl...
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