  We present the 1-100 GeV spectral energy distribution for a population of 148
high-synchrotron-peaked blazars (HSPs) recently detected with Fermi-LAT as part
of the First Brazil-ICRANet Gamma-ray Blazar catalogue (1BIGB). Most of the
1BIGB sources do not appear in previous Fermi-LAT catalogues and their
gamma-ray spectral properties are presented here for the first time,
representing a significant new extension of the gamma-ray blazar population.
Since our sample was originally selected from an excess signal in the 0.3-500
GeV band, the sources stand out as promising TeV blazar candidates, potentially
in reach of the forthcoming very-high-energy (VHE) gamma-ray observatory, CTA.
The flux estimates presented here are derived considering PASS8 data,
integrating over more than 9 years of Fermi-LAT observations. We also review
the full broadband fit between 0.3-500 GeV presented in the original 1BIGB
paper for all sources, updating the power-law parameters with currently
available Fermi-LAT dataset. The importance of these sources in the context of
VHE population studies with both current instruments and the future CTA is
evaluated. To do so, we select a subsample of 1BIGB sources and extrapolate
their gamma-ray SEDs to the highest energies, properly accounting for
absorption due to the extragalactic background light. We compare those
extrapolations to the published CTA sensitivity curves and estimate their
detectability by CTA. Two notable sources from our sample, namely 1BIGB
J224910.6-130002 and 1BIGB J194356.2+211821, are discussed in greater detail.
All gamma-ray SEDs, which are shown here for the first time, are made publicly
available via the Brazilian Science Data Center (BSDC) service, maintained at
CBPF, in Rio de Janeiro.
