Is the High- z Lynx Arc Nebula Ionized by an Obscured QSO?

Details Is the High- z Lynx Arc Nebula Ionized by an Obscured QSO? Is the High- z Lynx Arc Nebula Ionized by an Obscured QSO?

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005rmxac..24..173b&link_type=abstract

II International GTC Workshop: Science with GTC 1st-light Instruments and the LMT (Eds. A. M. Hidalgo-Gámez, J. J. González, J.

Astronomy and Astrophysics

Astronomy

Cosmology: Miscellaneous, Line: Formation, Quasars: Emission Lines

Scientific paper

The gravitational arc observed by Holden in 2001 at z = 3.356 reveals strong emission lines of N IV]λ1485, C IV λλ1549, O III]λ1665 but no NV λ1240. We consider the possibility that the ionizing source consisting of a partially absorbed powerlaw. We compare the line ratios from a low metallicity nebula ( Z[total] = 0.05 ZM_&sun;) photoionized by such filtered continuum with those produced by a zero-metallicity star of T[eff] = 80000 K. Whether using a thermal or an absorbed AGN continuum, all models result in very weak [O II]λ3727.

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