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Discovery of three z>6.5 quasars in the VISTA Kilo-degree Infrared Galaxy (VIKING) survey
B. P. Venemans, J. R. Findlay, W. J. Sutherland +6
Studying quasars at the highest redshifts can constrain models of galaxy and black hole formation, and it also probes the intergalactic medium in the early universe. Optical survey…
Black hole mass estimates and emission-line properties of a sample of redshift z>6.5 quasars
G. De Rosa, B. P. Venemans, R. Decarli +10
We present the analysis of optical and near-infrared spectra of the only four quasars known to date, discovered in the UKIDSS-LAS and VISTA-VIKING surveys. Our data-set con…
The Size of the Narrow-Line Emitting Region in the Seyfert 1 Galaxy NGC 5548 from Emission-Line Variability
B. M. Peterson, K. D. Denney, G. De Rosa +8
The narrow [O III] 4959, 5007 emission-line fluxes in the spectrum of the well-studied Seyfert 1 galaxy NGC 5548 are shown to vary with time. From this we show that the narrow line…
The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
B. J. Shappee, J. L. Prieto, D. Grupe +44
After the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered a significant brightening of the inner region of NGC 2617, we began a ~70 day photometric and spectroscopic m…
SN 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts
D. Milisavljevic, A. Soderberg, R. Margutti +25
We present optical and near-infrared observations of SN 2012au, a slow-evolving supernova (SN) with properties that suggest a link between subsets of energetic and H-poor SNe and s…
The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
Misty C. Bentz, Kelly D. Denney, Catherine J. Grier +15
We present an updated and revised analysis of the relationship between the Hbeta broad-line region (BLR) radius and the luminosity of the active galactic nucleus (AGN). Specificall…