SIMBAD references

Ground based long slit spectroscopic observations of the nuclear region of NGC 5252, and Hubble Space Telescope (HST) Faint Object Spectrograph (FOS) spectra of the nucleus and two bright knots located 0.36" NE and 0.31" SW from it, show that the nuclear region exhibits the characteristics of a Liner with exceptionally strong Oi emission, all lines being broad (FWHM∼1100km/s), while the gas outside the nucleus has a typical Seyfert 2 spectrum with relatively narrow lines (∼200-300km/s). We suggest that all the emitting gas is photoionized by the hidden non-thermal nuclear source detected through near-infrared (Kotilainen & Prieto, 1995A&A...295..646K) and X-ray (Cappi et al., 1996ApJ...456..141C) observations, the ionizing continuum, in the case of the central Liner, being ``filtered'' by a matter-bounded highly ionized cloud, hidden from our view by the same material obscuring the central continuum source.