, Wil van Breugel 1
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by M. S. Brotherton, S. A. Stanford, R. J. Smith, B. J. Boyle, Lance Miller, T. Shanks, M. Croom
http://meteor.anu.edu.au/~rsmith/QSO_Survey/Papers/QA_qso.ps.gz
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Abstract:
We report the discovery of a spectacular "post-starburst quasar " UN J1025\Gamma0040 (B = 19; z = 0:634). The optical spectrum is a chimera, displaying the broad Mg II 2800 emission line and strong blue continuum characteristic of quasars, but is dominated in the red by a large Balmer jump and prominent high-order Balmer absorption lines indicative of a substantial young stellar population at similar redshift. Stellar synthesis population models show that the stellar component is consistent with a 400 Myr old instantaneous starburst with a mass of
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