Near-infrared spectroscopy of PKS 1549-79: A protoquasar revealed?

M. J. Bellamy, C. N. Tadhunter, R. Morganti, K. A. Wills, J. Holt, M. D. Taylor, C. A. Watson

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11 Citations (Scopus)


We present a near-infrared (near-IR) spectrum of the nearby radio galaxy PKS 1549-79 (z = 0.153). These data were taken with the aim of testing the idea that this object contains a quasar nucleus that is moderately extinguished, despite evidence that its radio jet points close to our line of sight. We detect broad Paα emission (FWHM 1745 ± 40 km s-1), relatively bright continuum emission, and a continuum slope consistent with a reddened quasar spectrum (3.1 <Av <7.3), all emitted by an unresolved point source. Therefore we conclude that we have, indeed, detected a hidden quasar nucleus in PKS 1549-79. Combined with previous results, these observations are consistent with the idea that PKS 1549-79 is a young radio source in which the cocoon of debris left over from the triggering events has not yet been swept aside by circumnuclear outflows.
Original languageEnglish
Pages (from-to)L80-L84
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Publication statusPublished - 1 Oct 2003


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