323 citations · 4.9k across the 142 of their papers we have counts for
7 papers · 1 filter
Emission Line Galaxies and Active Galactic Nuclei in WINGS clusters
P. Marziani, M. D'Onofrio, D. Bettoni +7
We present the analysis of the emission line galaxies members of 46 low redshift (0.04 < z < 0.07) clusters observed by WINGS (WIde-field Nearby Galaxy cluster Survey, Fasano et al…
The Extreme Ultraviolet Variability of Quasars
Brian Punsly, Paola Marziani, Shaohua Zhang +2
We study the extreme ultraviolet (EUV) variability (rest frame wavelengths 500 - 920 ) of high luminosity quasars using HST (low to intermediate redshift sample) and SDSS (high…
On the origin of the Fundamental Plane and Faber-Jackson relations: consequences for the star formation problem
Mauro D'Onofrio, Stefano Cariddi, Cesare Chiosi +2
The aim of this work is to show that the origin of the Fundamental Plane (FP) relation for early-type galaxies (ETGs) can be traced back to the existence of a fine-tuning between t…
Tracing dark energy with quasars
J. Średzińska, B. Czerny, M. Bilicki +7
The nature of dark energy, driving the accelerated expansion of the Universe, is one of the most important issues in modern astrophysics. In order to understand this phenomenon, we…
Evidence for periodicity in 43 year-long monitoring of NGC 5548
E. Bon, S. Zucker, H. Netzer +14
We present an analysis of 43 years (1972 to 2015) of spectroscopic observations of the Seyfert 1 galaxy NGC 5548. This includes 12 years of new unpublished observations (2003 to 20…
The Extreme Ultraviolet Spectra of Low Redshift Radio Loud Quasars
Brian Punsly, Cormac Reynolds, Paola Marziani +1
This paper reports on the extreme ultraviolet (EUV) spectrum of three low redshift () radio loud quasars, 3C 95, 3C 57 and PKS 0405-123. The spectra were obtained with…