146 citations · 435 across the 7 of their papers we have counts for
Showing 2004 · astro-phShow all
3 papers · 2 filters
astro-ph2004★ 59 cited
A Change in the Physical State of Carinae?
K. Davidson, J. C. Martin, R. M. Humphreys +8
During Car's spectroscopic event in mid-2003, the stellar wind's bright H and H emission lines temporarily had a distinctive shape unlike that reported on any previous oc…
astro-ph2004★ 146 cited
The Origin of Fe II Emission in AGN
J. A. Baldwin, G. J. Ferland, K. T. Korista +2
We used a very large set of models of broad emission line (BEL) clouds in AGN to investigate the formation of the observed Fe II emission lines. We show that photoionized BEL cloud…
astro-ph2004★ 48 cited
Implications of Quasar Black Hole Masses at High Redshifts
Matthias Dietrich, Fred Hamann
We investigated a sample of 15 luminous high-redshift quasars (3.3 < z < 5.1) to measure the mass of their super-massive black holes (SMBH) and compare, for the first time, results…