Do Supermassive Black Holes need Iron Supplements?

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• Matthew Temple
• Wednesday 16 February 2022, 13:45-14:15
• The Hoyle Lecture Theatre + Zoom .

If you have a question about this talk, please contact Hannah Uebler.

The metal abundances of high redshift quasar broad-line regions are commonly inferred to be significantly higher than the ISM gas-phase metallicities of their host galaxies. We present new photoionization models which demonstrate that the range of high-ionization UV broad line ratios observed in luminous quasar spectra can in fact be explained by changes in the density and location of the emitting gas, without the need for super-solar metallicities. Within our new paradigm, quasars with stronger outflow signatures show stronger emission from gas which is denser and located closer-in to the ionizing source.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• The Hoyle Lecture Theatre + Zoom

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