Add to ORKGNear infrared measurements were obtained of 30 quasars originally found serendipitously as X-ray sources in fields of other objects. The observations show that the infrared characteristics of these quasars do not differ significantly from those of quasars selected by other criteria. Because this X-ray selected sample is subject to different selection biases than previous radio and optical surveys, this conclusion is useful in validating previous inferences regarding the infrared colors of 'typical' quasars
I present the data for an optical/near-infrared study of radio-loud quasar environments from z = 0.6...
We present an investigation of quasar colour–redshift parameter space in order to search for radio-q...
To understand the active galactic nuclei (AGNs) phenomenon and their impact on the evolution of gala...
Near-infrared measurements have been obtained of 30 quasars originally found serendipitously as x-ra...
Measurements at 1.2, 1.6 and 2.2 microns were combined with visual spectrophotometry of 21 quasars h...
A complete sample of 108 optically selected quasars, the Palomar-Green quasars, has been studied at ...
Combining radio observations with optical and infrared color selection--demonstrated in our pilot st...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
A sample of 103 quasars from the Large Bright Quasar Survey (LBQS) has been observed with the VLA at...
Measurements of the nebulosity around quasars have been carried out in the near-infrared. The colors...
We have observed a group of optically selected quasars at a wavelength of 1.25mm with the Caltech Su...
Research into the optical, ultraviolet and infrared continuum emission from quasars and their host g...
International audienceThe sub-population of quasars reddened by intrinsic or intervening clouds of d...
Measurements at 1.2, 1.6, and 2.2 μm have been combined with visual spectrophotometry of 21 quasars ...
The sources which dominate the thermal cosmic X-ray background cannot have X-ray spectra similar to ...
I present the data for an optical/near-infrared study of radio-loud quasar environments from z = 0.6...
We present an investigation of quasar colour–redshift parameter space in order to search for radio-q...
To understand the active galactic nuclei (AGNs) phenomenon and their impact on the evolution of gala...
Near-infrared measurements have been obtained of 30 quasars originally found serendipitously as x-ra...
Measurements at 1.2, 1.6 and 2.2 microns were combined with visual spectrophotometry of 21 quasars h...
A complete sample of 108 optically selected quasars, the Palomar-Green quasars, has been studied at ...
Combining radio observations with optical and infrared color selection--demonstrated in our pilot st...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
A sample of 103 quasars from the Large Bright Quasar Survey (LBQS) has been observed with the VLA at...
Measurements of the nebulosity around quasars have been carried out in the near-infrared. The colors...
We have observed a group of optically selected quasars at a wavelength of 1.25mm with the Caltech Su...
Research into the optical, ultraviolet and infrared continuum emission from quasars and their host g...
International audienceThe sub-population of quasars reddened by intrinsic or intervening clouds of d...
Measurements at 1.2, 1.6, and 2.2 μm have been combined with visual spectrophotometry of 21 quasars ...
The sources which dominate the thermal cosmic X-ray background cannot have X-ray spectra similar to ...
I present the data for an optical/near-infrared study of radio-loud quasar environments from z = 0.6...
We present an investigation of quasar colour–redshift parameter space in order to search for radio-q...
To understand the active galactic nuclei (AGNs) phenomenon and their impact on the evolution of gala...