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M. Stepney

8 papers hereh-index 337 citations8 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author4
  • middle author3
  • last author1

Across the 8 of 8 papers where every author was matched, so the position is known.

fields
  • astro-ph.GA8

identity via Semantic Scholar / OpenAlex

activity
20232026
most citedTesting AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars

49 citations · 100 across the 8 of their papers we have counts for

collaborators
Showing 2023Show all

3 papers · 1 filter

astro-ph.GA2023★ 22 cited

A disc wind model for blueshifts in quasar broad emission lines

James H. Matthews, Jago Strong-Wright, Christian Knigge +7

Blueshifts - or, more accurately, blue asymmetries - in broad emission lines such as CIV λ1550 are common in luminous quasars and correlate with fundamental properties such as Ed…

astro-ph.GA2023★ 13 cited

No redshift evolution in the rest-frame UV emission line properties of quasars from z=1.5 to z=4.0

Matthew Stepney, Manda Banerji, Paul C. Hewett +4

We analyse the rest-frame UV spectra of 2,531 high-redshift (3.5<z<4.0) quasars from the Sloan Digital Sky Survey DR16Q catalogue. In combination with previous work, we study the r…

astro-ph.GA2023★ 49 cited

Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars

Matthew J. Temple, James H. Matthews, Paul C. Hewett +6

Using 190,000 spectra from the seventeenth data release of the Sloan Digital Sky Survey, we investigate the ultraviolet emission line properties in z=2 quasars. Specifically, we qu…

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