Active galactic nuclei (AGN) are powered by the accretion of material onto a supermassive
black hole (SMBH) and are among the most luminous objects in the Universe. However, the …

The all sky surveys done by the Palomar Observatory Schmidt, the European Southern
Observatory Schmidt, and the United Kingdom Schmidt, the InfraRed Astronomical Satellite …

We present an evolutionary model for starbursts, quasars, and spheroidal galaxies in which
mergers between gas-rich galaxies drive nuclear inflows of gas, producing starbursts and …

We present the source associations, cross-identifications, and multi-wavelength properties
of the faint radio source population detected in the deep tier of the LOFAR Two Metre Sky …

We combine a large set of quasar luminosity function (QLF) measurements from the rest-
frame optical, soft and hard X-ray, and near-and mid-IR bands to determine the bolometric …

Selection of active galactic nuclei (AGNs) in the infrared facilitates the discovery of AGNs
whose optical emission is extinguished by dust. In this paper, we use the Spitzer Space …

Based on numerical simulations of gas-rich galaxy mergers, we discuss a model in which
quasar activity is tied to the self-regulated growth of supermassive black holes in galaxies …

We investigate the overall continuum and emission-line properties of quasars as a function
of their optical/UV spectral energy distributions. Our sample consists of 4576 quasars from …

The NOAO Deep Wide-Field Survey ADS Classic is now deprecated. It will be completely
retired in October 2019. This page will automatically redirect to the new ADS interface at that …

ONE of the most direct methods of constraining the epoch at which the first galaxies formed—
and thereby to constrain the age of the Universe—is to identify and date the oldest galaxies …