Add to ORKGNear-infrared measurements have been 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
We present an analysis of the effects of luminosity on the shape of the mid-infrared spectral energy...
International audienceThe sub-population of quasars reddened by intrinsic or intervening clouds of d...
We present short \chandra observations of twelve bright (i<18) z_em~1.5 quasars from the Sloan Digit...
Near infrared measurements were obtained of 30 quasars originally found serendipitously as X-ray sou...
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...
We have observed a group of optically selected quasars at a wavelength of 1.25mm with the Caltech Su...
Measurements at 1.2, 1.6 and 2.2 microns were combined with visual spectrophotometry of 21 quasars h...
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...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
The sources which dominate the thermal cosmic X-ray background cannot have X-ray spectra similar to ...
Using mid-infrared and radio criteria, we select a sample of candidate z~2 obscured quasars. Optical...
Measurements at 1.2, 1.6, and 2.2 μm have been combined with visual spectrophotometry of 21 quasars ...
Research into the optical, ultraviolet and infrared continuum emission from quasars and their host g...
We present an analysis of the effects of luminosity on the shape of the mid-infrared spectral energy...
International audienceThe sub-population of quasars reddened by intrinsic or intervening clouds of d...
We present short \chandra observations of twelve bright (i<18) z_em~1.5 quasars from the Sloan Digit...
Near infrared measurements were obtained of 30 quasars originally found serendipitously as X-ray sou...
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...
We have observed a group of optically selected quasars at a wavelength of 1.25mm with the Caltech Su...
Measurements at 1.2, 1.6 and 2.2 microns were combined with visual spectrophotometry of 21 quasars h...
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...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
The sources which dominate the thermal cosmic X-ray background cannot have X-ray spectra similar to ...
Using mid-infrared and radio criteria, we select a sample of candidate z~2 obscured quasars. Optical...
Measurements at 1.2, 1.6, and 2.2 μm have been combined with visual spectrophotometry of 21 quasars ...
Research into the optical, ultraviolet and infrared continuum emission from quasars and their host g...
We present an analysis of the effects of luminosity on the shape of the mid-infrared spectral energy...
International audienceThe sub-population of quasars reddened by intrinsic or intervening clouds of d...
We present short \chandra observations of twelve bright (i<18) z_em~1.5 quasars from the Sloan Digit...