The last 25 years saw a major step forward in the analysis of optical and UV spectroscopic
data of large quasar samples. Multivariate statistical approaches have led to the definition of …

We present the results of the 2MASS Redshift Survey (2MRS), a ten-year project to map the
full three-dimensional distribution of galaxies in the nearby universe. The Two Micron All Sky …

We present a study of the prevalence of optical and radio nuclear activity with respect to the
environment and interactions in a sample of the Sloan Digital Sky Survey (SDSS) galaxies …

We study star formation in a sample of 1204 galaxies in minor (≥ 2) pair and compact
groups, drawn from the Sloan Digital Sky Survey Data Release 5. We analyze an analogous …

The unified model of active galactic nuclei (AGNs) proposes that different AGN optical
spectral types are caused by different viewing angles with respect to an obscuring" torus." …

In this work, our aim is to investigate the star formation rate (SFR) of the host galaxies of
active galactic nuclei (AGNs) in the early Universe. To this end, we constructed a sample of …

It has long been known that galaxy interactions are associated with enhanced star formation.
In a companion paper, we explored this connection by applying a variety of statistics to …

There exist conflicting observations on whether or not the environment of broad-and narrow-
line active galatic nuclei (AGN) differ and this consequently questions the validity of the AGN …

We present a detailed analysis of XMM-Newton X-ray spectra of the Narrow-Line Seyfert 1
galaxy Mrk 1044. We find robust evidence for a multiphase, ultrafast outflow, traced by four …

We present a study of the prevalence and luminosity of active galactic nuclei (AGN; traced
by optical spectra) as a function of both environment and galaxy interactions. For this study …