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Unveiling the nature of INTEGRAL objects through optical spectroscopy VII Identification of 20 Galactic and extragalactic hard X ray sources

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Fig. 1. From left to right and top to bottom: optical images of the fields of IGR J00333+6122, Swift J0216.3+5128, IGR J02466−4222, IGR J02524−0829, IGR J05270 −6631, IGR J08390−4833, IGR J09025−6814, IGR J09253+6929, IGR J10147 −6354 and IGR J11098−6457
Fig. 2. As Fig. 1, but for the fields of IGR J11435−6109, 1ES 1210−646, IGR J12415−5750, IGR J16426+6536, IGR J17404−3655, IGR J18173−2509, IGR J18249 −3243, IGR J18308−1232, IGR J19267+1325 and IGR J21347+4737
Table 1. Log of the spectroscopic observations presented in this paper (see text for details)
Fig. 3. Spectra (not corrected for the intervening Galactic ab- ab-sorption) of the optical counterparts of the CVs belonging to the sample of INTEGRAL sources presented in this paper: the 4 dwarf novae are reported in the upper and central panels, while t
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