Lyman-alpha absorption : links between CSS quasars and high-redshift radio galaxies

Details Lyman-alpha absorption : links between CSS quasars and high-redshift radio galaxies Lyman-alpha absorption : links between CSS quasars and high-redshift radio galaxies

1997-12-11

arxiv.org/abs/astro-ph/9712151v1

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures, to appear in `The Most Distant Radio Galaxies', Amsterdam, Oct 1997, Reidel

Scientific paper

Spectroscopy of high-redshift compact steep-spectrum (CSS) quasars shows a high incidence of Ly-alpha absorption close to the quasar redshift. Associated absorption systems like these are rare in other types of radio sources, with the notable exception of high-redshift radio galaxies (HZRGs). CSS quasars and HZRGs share many properties; the hypothesis that they are intrinsically similar objects is presented and discussed.

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