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arXiv · astro-ph/9812065

Optical and infrared observations of the luminous quasar PDS 456: a radio-quiet analogue of 3C 273?

Chris Simpson·Martin Ward·Paul O'Brien·James Reeves
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Abstract

We present infrared photometry and optical and infrared spectroscopy of the recently-discovered, extremely luminous nearby quasar PDS 456. A number of broad emission features are seen in the near-infrared which we are unable to identify. We measure a more accurate redshift from a narrow forbidden emission line and compare the optical-infrared spectrum to that of 3C 273. The close similarity suggests that PDS 456 is a radio-quiet analogue of 3C 273, although radio observations do not support this idea.

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Chris Simpson, Martin Ward, Paul O'Brien, James Reeves. 1998-12-03. Optical and infrared observations of the luminous quasar PDS 456: a radio-quiet analogue of 3C 273?. https://doi.org/10.1046/j.1365-8711.1999.02344.x

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