Iras-allsky

Near-Infrared and Optical Spectroscopy of FSC 10214+4724

April 1995 • 1995ApJ...443L..65S

Authors • Soifer, B. T. • Cohen, J. G. • Armus, L. • Matthews, K. • Neugebauer, G. • Oke, J. B.

Abstract • New infrared and optical spectroscopic observations, obtained with the W. M. Keck Telescope, are reported for the highly luminous infrared source FSC 10214+4724. The rest frame optical spectrum shows new emission lines of [Ne III], [Ne v], [O I], [O II], [S II], and He^+^, while the rest frame ultraviolet spectrum shows new lines of O IV] + Si IV, N III, N IV], Si ii, Ne IV, and possibly N II and [Ne III], as well as clearly showing that Lyα is self absorbed. The emission-line spectrum is most characteristic of a Seyfert 2 nucleus. The preponderance of spectroscopic evidence strengthens the case for a dust-enshrouded AGN powering much or most of the observed luminosity. The various spectral lines lead to a wide range in the inferred reddening and ionization parameter for this system, suggesting that we are viewing several environments through differing extinctions.

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Lee_armus

Lee Armus

Senior Scientist