A kiloparsec-scale hyper-starburst in a quasar host less than 1 gigayear after the Big Bang

Fabian Walter (), Dominik Riechers, Pierre Cox, Roberto Neri, Chris Carilli, Frank Bertoldi, Axel Weiss and Roberto Maiolino
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Fabian Walter: Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
Dominik Riechers: Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
Pierre Cox: Institut de Radio Astronomie Millimétrique, 300 rue de la Piscine, F-38406 St-Martin-d’Hères, France
Roberto Neri: Institut de Radio Astronomie Millimétrique, 300 rue de la Piscine, F-38406 St-Martin-d’Hères, France
Chris Carilli: National Radio Astronomy Observatory, PO Box O, Socorro, New Mexico 87801, USA
Frank Bertoldi: Argelander Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
Axel Weiss: Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
Roberto Maiolino: L’Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Roma, I-00040 Monte Porzio Catone, Roma, Italy

Nature, 2009, vol. 457, issue 7230, 699-701

Abstract: Bulging with stars A process of cosmic reionization is thought to have started after the Universe had cooled sufficiently to allow the first generation of stars to form. The period is probed by observing objects formed less than a billion years after the Big Bang. One such, the host galaxy of the quasar SDSS J114816.64+525150.3 at redshift z = 6.42, has now been imaged with good spatial resolution, revealing a huge area of intense star formation. This hyper-starburst may be representative of the strong star formation episodes predicted to have occurred towards the end of cosmic reionization, leading to the growth of stellar bulges, similar to that seen in the Milky Way, in hot quasar host galaxies.

Date: 2009
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DOI: 10.1038/nature07681

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